Stock boost levels?
#22
03-04-2018, 09:28 PM
Veteran Member
Similar number for me as well.
Since data is directly from ECU which already has calibrated the info from the various sensors to produce the vacuum/boost signal I don;t see why or even how you could/would calibrate the PID within Torque
Kinda weird that it would spit out false or uncalibrated data, but stranger things have happened....for example, with the CANBUS interface that I have in place, I could not run DashCommand and the interface at the same time....however, I am able to run Torque and the interface at the same time..but with a caveat.
If I open too many PID's in Torque, it overloads the OBDII port and will kick off the CANBUS interface and send data only to Torque...not only that, but the ECU will also begin throwing gearbox faults.
The sweet spot is to run 5 PID's in Torque with the interface. The OBDII has no problems pushing both the Torque app and the CANBUS interface then.
I have been able to replicate the gearbox fault multiple times and found that 5 PID's is about the max that we can use running the CANBUS interface and TorqueApp simultaneously.
Running lots of PID's at once in the Torque App will result (for me at least) in gearbox faults.
Since data is directly from ECU which already has calibrated the info from the various sensors to produce the vacuum/boost signal I don;t see why or even how you could/would calibrate the PID within Torque
Kinda weird that it would spit out false or uncalibrated data, but stranger things have happened....for example, with the CANBUS interface that I have in place, I could not run DashCommand and the interface at the same time....however, I am able to run Torque and the interface at the same time..but with a caveat.
If I open too many PID's in Torque, it overloads the OBDII port and will kick off the CANBUS interface and send data only to Torque...not only that, but the ECU will also begin throwing gearbox faults.
The sweet spot is to run 5 PID's in Torque with the interface. The OBDII has no problems pushing both the Torque app and the CANBUS interface then.
I have been able to replicate the gearbox fault multiple times and found that 5 PID's is about the max that we can use running the CANBUS interface and TorqueApp simultaneously.
Running lots of PID's at once in the Torque App will result (for me at least) in gearbox faults.
#23
03-04-2018, 09:55 PM
Veteran Member
#24
03-04-2018, 10:23 PM
#25
03-05-2018, 12:00 AM
Veteran Member
as i posted in the video....i ran out of clear road. So we have gone from 11 PSI to 18 PSI...and you need visual proof that I am hitting 22 PSI?...lol...come on Cambo, just take my word for it dude. My rear tires are at 4/32 right now and they don't even have 10,000 miles on them. I'll pass on posting that video...at least until I have new rubber on the rear wheels.
Last edited by Cherry_560sel; 03-05-2018 at 12:54 AM.
#26
03-05-2018, 01:09 AM
For all I know you could be reading the gauge wrong and it's 22 inches of mercury at vacuum 
22 PSI seems too high given the size of the supercharger, size of the engine, etc... and given what other V6 S/C motors with tunes, pulleys, etc have been measured at.
Go back to this thread https://www.jaguarforums.com/forum/f...s-tune-153046/
Stock F-Type V6S made 14.6PSI, and after pulleys and various tune revisions it momentarily peaked at 20PSI, but for just a split second, it's more like consistent 19's.
Why does your V6 make 2 pounds more than everyone elses?
22 PSI seems too high given the size of the supercharger, size of the engine, etc... and given what other V6 S/C motors with tunes, pulleys, etc have been measured at.
Go back to this thread https://www.jaguarforums.com/forum/f...s-tune-153046/
Stock F-Type V6S made 14.6PSI, and after pulleys and various tune revisions it momentarily peaked at 20PSI, but for just a split second, it's more like consistent 19's.
Why does your V6 make 2 pounds more than everyone elses?
#27
03-05-2018, 03:28 AM
Veteran Member
#28
03-05-2018, 10:58 AM
Veteran Member
I followed Unhingd's posts methodically when I was building out my mods and I agree that our numbers should measure fairly close if not exactly.
Other than the NOS spray, we have the exact same engine mods. The difference could be his exhaust set up is different than mine (I think he may have a set of custom headers and may be running the stock boxes in the rear).
I am going with stock headers, 200 cel cats and varex open exahust.
#29
03-16-2018, 07:24 PM
I purchased an ultragauge and so far I hooked it up to my XJ Supercharged, my brothers XFR and my cousin’s XFR and have seen max boost of around 9.7psi in the upper RPM in 3rd gear in all 3 vehicles. This is max with it hovering between 8.5 and 9.7 in the upper RPM. I have a tune and pulley, my brothers XFR is stock and my cousins has a tune and pulley. I’m confused. lol
Last edited by Ntimd8; 03-16-2018 at 09:40 PM.
#30
03-17-2018, 09:36 PM
Member
mine too. i have a 2010 XF supercharged, and i see normal 6-8 psi, some times 9-11psi. I also have an upper pulley, and tune.
I will post a screen shot tomorrow. I left my tablet at work that I use Torque on and have the screen shots on.
I will post a screen shot tomorrow. I left my tablet at work that I use Torque on and have the screen shots on.
Last edited by Twiztidunreal; 03-17-2018 at 09:38 PM.
#31
03-18-2018, 01:15 PM
Veteran Member
Yes, so the upper pulley is good for MAYBE two psi of boost. I have both the lower AND upper pulley w/Velocity Tune and NOS spray, so you would not see the boost numbers that I get if you are only running the smaller upper pulley. Right now, I can feel the tail slide if I go WOT from 2nd to 3rd, so I'm not going to chance spinning at 70+ mph. When I get around to putting fresh rubber on my wheels I will go for a WOT run and post the results.
#33
03-18-2018, 05:18 PM
Yes, so the upper pulley is good for MAYBE two psi of boost. I have both the lower AND upper pulley w/Velocity Tune and NOS spray, so you would not see the boost numbers that I get if you are only running the smaller upper pulley. Right now, I can feel the tail slide if I go WOT from 2nd to 3rd, so I'm not going to chance spinning at 70+ mph. When I get around to putting fresh rubber on my wheels I will go for a WOT run and post the results.
#35
05-09-2022, 12:06 AM
I myself with the Mina Lower crank pulley, intake tube and then a ported SC snout and TB had 20.45 max without the tune. Then with 1 of 3 tunes (1 being most mild) saw an increase to 26.05lb.. all measured by OBD2. Anyone know if that could be actually correct? I had read that 11.6 was stock in almost everything I’ve gone through. Even talking to Chris at Mina said it was 11.6lb
#36
05-09-2022, 02:41 AM
#37
05-09-2022, 03:08 AM
I could very well be mistaken. Do you by chance know what correct stock boost levels are (give or take) As I mentioned in my previous reply, using psi, I saw figures of 20.45 with just a lower crank pulley an intake tube (also forgot to mention the 2 K&N cone filters) and a ported Snout and TB and after the mild tuning map saw 26.05psi. I am curious if you or anyone might have insight on how the ECU measures Raw Boost values separately from the MAP values? I had my intake and plenum out and don’t quite recall seeing more than the MAP sensor on the rear of bank 2 plenum.
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Leon928 (08-08-2022)
#38
08-02-2022, 10:04 AM
I myself have seen a max of 29PSI on multiple occasions using Boost Pressure Raw PID on my OBD2 Scanner. I’m trying to find a way to install a dedicated Boost Gauge to verify. If anyone who has done it has any suggestions or instructions that would be awesome.
