Eurocharged Pulley and Tune results (V8S)
#1
10-03-2014, 05:07 PM
Eurocharged Pulley and Tune results (V8S)
Eurocharged Pulley and tune results (F-Type V8S)
Summary
Positives: Significant increase in torque with boost building noticeably sooner. Throttle response is also improved with throttle inputs more sensitive than before while in Dynamic more. The results are a livelier sports car that pulls hard. Runs stock Porsche 997TT 60-130MPH times.
Negatives: Traction limits now easily exceeded in 1st/2nd and even early in 3rd gear if you do not modulate the throttle or roll in at a fairly conservative rate. (Pirelli P-Zero 295mm tires on the rear with ½ tread life remaining)
Recommendation: I very much recommend the V8S Eurocharged pulley and tune. No question it greatly transforms the car. The cost is significantly less expensive than the competition yet in my opinion offers the same performance improvement. (Approximately 55HP and 65 Lbft Torque)
Performance documentation:
As I have previously stated in earlier threads I was interested less in dyno before and after plots and more in real world acceleration testing. I have no idea what 65 LBft improvement means in actuality however I can understand timed speed range tests and their results. Because of that I did not do any dyno testing but focused on acceleration testing.
Specifically my real world testing parameters would focus on 3 acceleration tests:
30-70 MPH, 50-70 MPH, 60-130 MPH
To accurately record these parameters I chose the VBox Sport. A GPS enabled performance data logger used by many performance testers including many of the car magazines. I also chose a little traveled section of highway that would give me a level road and a good testing surface.
Testing was conducted on two evenings at approximately the same time for the before mods data logging and 2 evening for the after mod data logging.
Temperature 75-76 degrees Fahrenheit
Start Height 184.50M End Height 184.87M Difference 0.37M
Convertible top up, windows up, air conditioner off
Dynamic more, Track DCS, Auto shifting
30-70MPH in seconds Before: 3.28, 3.29, 3.37, 3.38, 3.40
After : 3.02, 3.04, 3.05, 3.06, 3.07
Approximately 1/3 of a second faster on average
Note: Hard to get traction at the low end of this post pulley and tune.
------------------------------------------------------------------------------------------------
50-70MPH in seconds Before: 1.8, 1.8, 1.8,1.83, 1.84
After : 1.7, 1.7, 1.7, 1.71, 1.72
Approximately 1/10 of a second faster on average
-------------------------------------------------------------------------------------------------
60-130MPH in seconds Before: 10.78, 10.88, 10.94, 10.96, 10.97
*After : 9.34, 9.34, 9.35, 9.59, 9.59
Approximately 1.5 seconds faster on average
· The after pulley and tune times are representative of what stock 997TTs are running.
I’ve had 3 good days to run the car. There is no appreciable difference in driving or exhaust note with the pulley and tune other than the increase in torque and earlier onset. I would definitely recommend this modification for how well it transforms the car. It pulls hard!
On a personal side note, I spent a good part of the day at Eurocharged in Houston during and after the pulley and tune install. They have a nice shop with 4 lifts and lots of vehicles in different stages of modification and have reportedly tuned over 7,000 various vehicles to date. I had a chance to discuss my modification with Jerry, the owner, and found him to be extremely knowledgeable as well personable. He took time out of his otherwise busy day to answer all the questions I could fire off at him and I really appreciated his undivided attention. No question he is passionate at what he does and offers the end consumer like me and I was impressed by that also.
Disclaimer. I have no professional association with Eurocharged and receive no benefits whatsoever in recommending them. I am simply stating what his product did to my car and my satisfaction with it. I am sure there are other quality tuners out there with great products however this should give many of you on the pulley and tune fence another data point to reference.
Walt
Questions?
Summary
Positives: Significant increase in torque with boost building noticeably sooner. Throttle response is also improved with throttle inputs more sensitive than before while in Dynamic more. The results are a livelier sports car that pulls hard. Runs stock Porsche 997TT 60-130MPH times.
Negatives: Traction limits now easily exceeded in 1st/2nd and even early in 3rd gear if you do not modulate the throttle or roll in at a fairly conservative rate. (Pirelli P-Zero 295mm tires on the rear with ½ tread life remaining)
Recommendation: I very much recommend the V8S Eurocharged pulley and tune. No question it greatly transforms the car. The cost is significantly less expensive than the competition yet in my opinion offers the same performance improvement. (Approximately 55HP and 65 Lbft Torque)
Performance documentation:
As I have previously stated in earlier threads I was interested less in dyno before and after plots and more in real world acceleration testing. I have no idea what 65 LBft improvement means in actuality however I can understand timed speed range tests and their results. Because of that I did not do any dyno testing but focused on acceleration testing.
Specifically my real world testing parameters would focus on 3 acceleration tests:
30-70 MPH, 50-70 MPH, 60-130 MPH
To accurately record these parameters I chose the VBox Sport. A GPS enabled performance data logger used by many performance testers including many of the car magazines. I also chose a little traveled section of highway that would give me a level road and a good testing surface.
Testing was conducted on two evenings at approximately the same time for the before mods data logging and 2 evening for the after mod data logging.
Temperature 75-76 degrees Fahrenheit
Start Height 184.50M End Height 184.87M Difference 0.37M
Convertible top up, windows up, air conditioner off
Dynamic more, Track DCS, Auto shifting
30-70MPH in seconds Before: 3.28, 3.29, 3.37, 3.38, 3.40
After : 3.02, 3.04, 3.05, 3.06, 3.07
Approximately 1/3 of a second faster on average
Note: Hard to get traction at the low end of this post pulley and tune.
------------------------------------------------------------------------------------------------
50-70MPH in seconds Before: 1.8, 1.8, 1.8,1.83, 1.84
After : 1.7, 1.7, 1.7, 1.71, 1.72
Approximately 1/10 of a second faster on average
-------------------------------------------------------------------------------------------------
60-130MPH in seconds Before: 10.78, 10.88, 10.94, 10.96, 10.97
*After : 9.34, 9.34, 9.35, 9.59, 9.59
Approximately 1.5 seconds faster on average
· The after pulley and tune times are representative of what stock 997TTs are running.
I’ve had 3 good days to run the car. There is no appreciable difference in driving or exhaust note with the pulley and tune other than the increase in torque and earlier onset. I would definitely recommend this modification for how well it transforms the car. It pulls hard!
On a personal side note, I spent a good part of the day at Eurocharged in Houston during and after the pulley and tune install. They have a nice shop with 4 lifts and lots of vehicles in different stages of modification and have reportedly tuned over 7,000 various vehicles to date. I had a chance to discuss my modification with Jerry, the owner, and found him to be extremely knowledgeable as well personable. He took time out of his otherwise busy day to answer all the questions I could fire off at him and I really appreciated his undivided attention. No question he is passionate at what he does and offers the end consumer like me and I was impressed by that also.
Disclaimer. I have no professional association with Eurocharged and receive no benefits whatsoever in recommending them. I am simply stating what his product did to my car and my satisfaction with it. I am sure there are other quality tuners out there with great products however this should give many of you on the pulley and tune fence another data point to reference.
Walt
Questions?
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#2
10-03-2014, 06:05 PM
Veteran Member
Walt,
Thanks for going to the trouble of documenting and posting the result.
It seems to me that your gains in time to reach vrs. MPH are reflective of a fair bit of power increase, when you consider that the car is already very fast with the base set up, prior to the modifications.
I've always wondered if the tuners just bring the power on earlier and with more throttle response and your scientific approach seems to indicate that its more than that. Did you happen to ask about the issue of leaning out the engine as a way to gain power, which could cause problems, or the issue of the blower pressure being bled off at some point?
And the issue of the car relearning its base settings has come up before on the forum, so hopefully yours will hold the tune.
Lawrence
Thanks for going to the trouble of documenting and posting the result.
It seems to me that your gains in time to reach vrs. MPH are reflective of a fair bit of power increase, when you consider that the car is already very fast with the base set up, prior to the modifications.
I've always wondered if the tuners just bring the power on earlier and with more throttle response and your scientific approach seems to indicate that its more than that. Did you happen to ask about the issue of leaning out the engine as a way to gain power, which could cause problems, or the issue of the blower pressure being bled off at some point?
And the issue of the car relearning its base settings has come up before on the forum, so hopefully yours will hold the tune.
Lawrence
Last edited by Mulmur; 10-03-2014 at 06:07 PM.
#6
10-03-2014, 11:25 PM
Mulmur-
The car does significantly pull harder. No question there is an increase in HP/TQ. I believe it’s inline within the advertised increases. I did ask about the AFR and leaning issues and Jerry told me he does not change the parameters from stock and with the minimal boost increase from the 1.5 Lb pulley and additional tune the direct fuel injection would not have a problem keeping up the called AFR.
I did not specifically ask about how the ECU manages power whether actually being bled off or managed by throttle body regulation. I felt I was already inundating him with a bunch of questions already and regardless of which method used I was already assured I would be happy with the performance increase.
As for the possibility of relearning its original base code setting I’ll cross that bridge if it in fact happens. I do not have any doubts I will know if it does revert however.
Shift-
I do, however the times are not overly impressive but let’s look at some numbers and the improvements.
My before tune ¼ mile ETs were: 12.54@118.8, 12.74@118.5, 12.52@119.1, 12.7@118.9
The problem I was having was getting a descent launch as additionally evidenced by my 60’ times: 2.4 sec, 2.32 sec, 2.37 sec, 2.4 sec. The P-Zero tires and highway friction component were not very good. In an ideal situation my 60’ times should be in the 1.8 second range.
Now let’s look at the after pulley and tune ¼ mile ET numbers:
12.38@123.5, 12.47@122.7, 12.36@123.6, 12.41@123.1, 12.32@123.9
Associated 60’ times: 2.4 sec, 2.53 sec, 2.47 sec, 2.44 sec, 2.58 sec.
So my 60’ times are still slow and actually a little worse then the before numbers however look at the MPH at the end of the ¼. I picked up about 4-5 MPH. That’s pretty significant. (I believe) Still slow 60’ times kill at good ET.
My after tune 0-60 MPH times were, 4.3, 4.4, 4.4, 4.5, 4.36. but there is not any significant difference between my before tune numbers. But again I’m just not getting good launches. They are all consistently shitty and why I really can’t make any true comparisons before/after tune other than it will spin them much easier and seemingly effortlessly after the tune actually. Once I am about around 40-50 MPH I am not getting any wheel spin nor can I create it so performance numbers I pick from those speeds on in comparison are much more valid. At the lower speeds post tune I really have to concentrate on power modulation via throttle otherwise I just sit there and spin.
I’ve never been a big fan of the P-Zero so once these are done I’ll switch over to PSS and possible larger 305mm size. (Going to discuss with Matt in Houston first)
I can tell you that if Eurocharged called me and said they figured out how to get more power out of their pulley/tune combo I'd quickly decline. I have to figure out first how to harness the power and rapid torque onset I have now at speeds less than 40-50MPH. Stickier and wider rear tires is the obvious answer.
What would be really nice would be if there is someone reading this that lives in the DFW area with a V8S that would like to check out my car and give me their impressions. Another data point.
Hope that answered the questions.
Walt
The car does significantly pull harder. No question there is an increase in HP/TQ. I believe it’s inline within the advertised increases. I did ask about the AFR and leaning issues and Jerry told me he does not change the parameters from stock and with the minimal boost increase from the 1.5 Lb pulley and additional tune the direct fuel injection would not have a problem keeping up the called AFR.
I did not specifically ask about how the ECU manages power whether actually being bled off or managed by throttle body regulation. I felt I was already inundating him with a bunch of questions already and regardless of which method used I was already assured I would be happy with the performance increase.
As for the possibility of relearning its original base code setting I’ll cross that bridge if it in fact happens. I do not have any doubts I will know if it does revert however.
Shift-
I do, however the times are not overly impressive but let’s look at some numbers and the improvements.
My before tune ¼ mile ETs were: 12.54@118.8, 12.74@118.5, 12.52@119.1, 12.7@118.9
The problem I was having was getting a descent launch as additionally evidenced by my 60’ times: 2.4 sec, 2.32 sec, 2.37 sec, 2.4 sec. The P-Zero tires and highway friction component were not very good. In an ideal situation my 60’ times should be in the 1.8 second range.
Now let’s look at the after pulley and tune ¼ mile ET numbers:
12.38@123.5, 12.47@122.7, 12.36@123.6, 12.41@123.1, 12.32@123.9
Associated 60’ times: 2.4 sec, 2.53 sec, 2.47 sec, 2.44 sec, 2.58 sec.
So my 60’ times are still slow and actually a little worse then the before numbers however look at the MPH at the end of the ¼. I picked up about 4-5 MPH. That’s pretty significant. (I believe) Still slow 60’ times kill at good ET.
My after tune 0-60 MPH times were, 4.3, 4.4, 4.4, 4.5, 4.36. but there is not any significant difference between my before tune numbers. But again I’m just not getting good launches. They are all consistently shitty and why I really can’t make any true comparisons before/after tune other than it will spin them much easier and seemingly effortlessly after the tune actually. Once I am about around 40-50 MPH I am not getting any wheel spin nor can I create it so performance numbers I pick from those speeds on in comparison are much more valid. At the lower speeds post tune I really have to concentrate on power modulation via throttle otherwise I just sit there and spin.
I’ve never been a big fan of the P-Zero so once these are done I’ll switch over to PSS and possible larger 305mm size. (Going to discuss with Matt in Houston first)
I can tell you that if Eurocharged called me and said they figured out how to get more power out of their pulley/tune combo I'd quickly decline. I have to figure out first how to harness the power and rapid torque onset I have now at speeds less than 40-50MPH. Stickier and wider rear tires is the obvious answer.
What would be really nice would be if there is someone reading this that lives in the DFW area with a V8S that would like to check out my car and give me their impressions. Another data point.
Hope that answered the questions.
Walt
Last edited by WaltB; 10-03-2014 at 11:31 PM.
#7
10-04-2014, 12:20 AM
Veteran Member
Trending Topics
#8
10-04-2014, 12:33 AM
Walt, given the propensity for the tuned F-type to break loose in the lower gears, and the need to manage the throttle so meticulously to compensate, could some of this extra torque to the wheels be better managed by switching to larger diameter tires when you upgrade to the PSS tires? Stock PZero's are 27". PSS 295/35's for instance are 28", or even 315/35's at 28.7" if you pushed to the margin of the stock 10.5" rims.
I am by no means an expert in this arena, but i do understand the physics of engineering, and it seems a larger tire would help dampen some of that extra torque in the low end, and given the profound pull you have reported, might suit the top end power just as well.
This of course would throw off the speedometer/odometer readings, which raises a question for which I am completely out of touch. Are speedometers still entirely mechanical, or are they now electronic? And if electronic, is it possible that they can be tuned or adjusted to a change in tire size?
I am by no means an expert in this arena, but i do understand the physics of engineering, and it seems a larger tire would help dampen some of that extra torque in the low end, and given the profound pull you have reported, might suit the top end power just as well.
This of course would throw off the speedometer/odometer readings, which raises a question for which I am completely out of touch. Are speedometers still entirely mechanical, or are they now electronic? And if electronic, is it possible that they can be tuned or adjusted to a change in tire size?
#10
10-04-2014, 07:23 AM
Veteran Member
#12
10-04-2014, 11:58 AM
Hi Vic,
I sorry but I don't. Some on here had stated the F-Type needs an AWD dyno or will pull power and you will not get accurate readings. I had one available here in Dallas but not in Houston where I was getting the pulley and tune installed. Eurocharged has a RWD but not an AWD. Once I determined the difficulty in scheduling a close, back to back AWD dyno I dropped that requirement and decided to stay with acceleration speed range times.
The tuner states the pulley and tune is good for 55HP and 65 Lbft of Torque. I very much believe that is in line with what I am getting acceleration time wise and seat of the pants so I feel I got what I paid for.
Just leaving here this morning for the Plano Cars and Coffee in 60 degree temps and cold tires I damn near swapped ends at 20MPH when the boost kicked in and the wheels seemed like they were on ice. It's way more sensitive now at low speeds.
Definitely have to get rid of these P-Zeros.
Walt
I sorry but I don't. Some on here had stated the F-Type needs an AWD dyno or will pull power and you will not get accurate readings. I had one available here in Dallas but not in Houston where I was getting the pulley and tune installed. Eurocharged has a RWD but not an AWD. Once I determined the difficulty in scheduling a close, back to back AWD dyno I dropped that requirement and decided to stay with acceleration speed range times.
The tuner states the pulley and tune is good for 55HP and 65 Lbft of Torque. I very much believe that is in line with what I am getting acceleration time wise and seat of the pants so I feel I got what I paid for.
Just leaving here this morning for the Plano Cars and Coffee in 60 degree temps and cold tires I damn near swapped ends at 20MPH when the boost kicked in and the wheels seemed like they were on ice. It's way more sensitive now at low speeds.
Definitely have to get rid of these P-Zeros.
Walt
#16
10-04-2014, 07:56 PM
#17
10-04-2014, 10:59 PM
#19
10-05-2014, 01:13 PM
You will have no issue fitting a 305 on the 10.5 wheel. I pushed out my 295x30x20's by 15mm and lowered the car and I don't rub at all- not even close. The only thing is the 305 tire is optimal for a 11 inch wheel IMHO so you might have a little overlap since the PSS tire is a very square tire vs a Japanese tire like a Yoko or a Toyo. But the half inch should not be an issue at all.
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#20
10-05-2014, 01:53 PM
You will have no issue fitting a 305 on the 10.5 wheel. I pushed out my 295x30x20's by 15mm and lowered the car and I don't rub at all- not even close. The only thing is the 305 tire is optimal for a 11 inch wheel IMHO so you might have a little overlap since the PSS tire is a very square tire vs a Japanese tire like a Yoko or a Toyo. But the half inch should not be an issue at all.
More interested in this data for the rear than the front.