Thats odd, you have exactly the same mods, and look here how happy BIP and Viapa where with the tune from Eurotek:
https://www.jaguarforums.com/forum/x...cu-tune-53936/

Here you also say you had a tune from Eurotek:
https://www.jaguarforums.com/forum/x...ew-mods-43354/

Yet on the same dyno you where 40 rwhp higher, thats not an error margin, that means something serioulsy different...

It would have been nice to have seen at least the a/f ratio of both runs, as mixture has a great influance on output, so that would give a much better picture.

Using the 10 to 15 rwhp you gain with a sports cats, 25-30 rwhp isn't a bad gain at all for these headers on a heavily modified car, but some more dynos would certainly be apreciated considering the costs.

 

My Bad, I was unaware that his is tuned. I'm sure there is an explanation for it but I am not all that familiar with his car. I'll be interested to hear how it drives and sounds from Viapa.

 

not times, but mph, very telling of power as mph changes with power production. We're talking same cars, as we all know take 2 of the same cars and they can produce different power outputs. You can change alot to make a car quicker or slower, but the mph stays relatively the same. I have freinds that have 2 chassis dynos(dynodynamics also) and 1 engine dyno. Theyve showed be that just strapping a car tighter or looser etc change alot. Thats not even counting other factors. Yes its only a tool and in the right hands a good one, in the wrong well....

 

I could not give him a higher recommendation. His turn around was one day. If you go to maxbore.com and look at the photos, you can see my TB shown there. He took it from 75mm->82.5mm.

Cost was $150 via paypal.

A++

 

OK, then MPH then, but that is still a performance demonstration...

My point is this:

Dynos can/do/have lie on the high side. My own example. One dyno 348 RWHP, another 267. Car with 9.5 psi at 4100 lbs ran 13.82 and 13.86 with no traction issues. This tells me the 348 RWHP dyno was crap. <--anyone disagree with this??

1/4 mile times and speeds cannot (if we know the true weight) lie on the high side. Sure they can read low, and If there are traction issues, we can see that in the launch. It is much harder to hide a slow car on a video than a chat room.


My point is also this, anyone can show a dyno sheet of 1000 HP and own a VW bug, but only a real performance shows it is real.

Lots of people who have thoroughly checkbooked their cars may have all the goodies, but if they do not understand how to install/use/tune with them, their cars can still seriously underperform, they claim to have "X" HP, but are afraid, yes afraid to do an actual recorded run. I'm not singling anyone out here, and if one reads this and feel personally attacked, then they have there own issues, either with their car's performance or with themselves. This statement is not confined to this specific board (I'm saying this because somebody is going to get their panties is a bunch and feel personally attacked by this statement, I just don't know who yet)

It would seem that I am going to be among the first to show honest before and after dynos and 1/4 mile slips, and videos when able. I am not selling anything. I am not operating the dyno. After I do post results along the way, people, for the first time, can look at concrete, credible, verifiable, actual performances of:
Stock
+Fresh Eaton M112 with upper pulley and Ported TB and intake system.
+Exhaust
+aftermarket intake tube
maybe a few more mods later, but this for now.

 

I hear ya my friend, Just sent my TB to Maxbore. I am running TB off the 4.2 engine. I thnik its 80mm as it stands. He said it will be back by monday and I'm pumped to see the difference.

 

Yours ought to be already 82.5, so you may get it back as an 88, so no one has any monopoly on 90mm-ish TBs.

 

LoL

Well you could have thanked me for finding/pionering with www.maxbore.com, and no I have no financial ties with this.

 

I do thank you,

Sharing that was a great benefit to the Jag community, as well as all the other information you share.

You are unquestionably the single best resource for accurate info on this board, and again, unquestionably have done the most pioneering in HP gains for these cars.

I am just stubborn and want to see for myself how far I can go with the handicap of an Eaton.

 

Would be to much honer, there are many more overhere that share valuable info!

I can see the fun, and think its great that you are contributing this way to document the steps with the results.

 

All that being said, I am still thinking I will be able to run a 12.5 1/4 mile even with the Eaton.

The twin screw certainly wears the crown, but I also think everyone else gave up too easily.

There is still plenty of power locked up in these motors.




BP: where are the "with cats" dynos?

 

So did you get it back? What was the final size? 88ish??

Inquiring minds want to know....I want to know

 

I too, want to know the result with the 4.2 TB...

 

Send me the headers and I will run em before and after at Epping NH!

 

 

Omg

 

OMG got wood!!! I need more info, the ram pipes look like they feed into the top of the blower, how do you rout the air into the throttle body, what did you do ???

 

I have never seen this set up prior. Can you explain what your putting together? How are you able to deliver air to your TB? Did you modify the motor in anyway prior? This set up looks really cool and very powerful, but what is the cost for such a build?

 

looks like you guys are finally getting close

 

Closer, only 12 more weeks !! Can't wait till 2014 to see this finished!

Will they still be selling gasoline when this is done?