Tune w/ stock turbos. Need Help!!!
#1
Tune w/ stock turbos. Need Help!!!
Had the following installed by local Porsche dealer:
IPD Plenum and Y Pipe
Evoms 550pkg (tune and recirc valves)
TCU tune
BMC filters
Stock muffler delete
From what I was told the evoms tune should produce 21-22psi whether in normal or sport mode and I should be around 600hp with all the parts I put in. The stock guages will only read 17 or 18 I am told. When I get on the car in normal it tops out at 15psi, and 17psi in sport mode.
Appreciate any thoughts on why I am only seeing 17psi if it should be 21-22. We are all at a loss. All hoses and clamps seem to be holding.
IPD Plenum and Y Pipe
Evoms 550pkg (tune and recirc valves)
TCU tune
BMC filters
Stock muffler delete
From what I was told the evoms tune should produce 21-22psi whether in normal or sport mode and I should be around 600hp with all the parts I put in. The stock guages will only read 17 or 18 I am told. When I get on the car in normal it tops out at 15psi, and 17psi in sport mode.
Appreciate any thoughts on why I am only seeing 17psi if it should be 21-22. We are all at a loss. All hoses and clamps seem to be holding.
#3
Planning on taking onto a Dyno soon as well and putting an AEM boost gauge in where the chrono was as right now I feel like its missing something.
#5
Wouldn't you expect it to show and hold 17psi then for a while if it was making that much more? Mine hits 17 for max 5 seconds before dropping off.
Planning on taking onto a Dyno soon as well and putting an AEM boost gauge in where the chrono was as right now I feel like its missing something.
Planning on taking onto a Dyno soon as well and putting an AEM boost gauge in where the chrono was as right now I feel like its missing something.
#6
To OP, everyone is correct, ignore the stock boost gauge, it's not accurate. The max you will ever see is 15/17 and real boost is only available with Durametric.
Basically in the stock car, the stock gauge reads 15/17 but measured real boost pressures are 16/19, from my measurement below:
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>
https://www.6speedonline.com/forums/...ed-giac-8.html
What I see numerically:
Normal: 15 psi (not 14, but 15) at around 3000 rpm. I believe this is because 1 bar is 14.504 psi, rounded up to 15 psi.
Sport: 17 psi (never 18, only 17) at around 3000 rpm. I believe this is because 1.2 bar is 17.4 psi, rounded down to 17.
Ah... German engineering's precision and logic, even in rounding.
What I see with the bar graph: The scale is psi-9-18 regardless of mode.
Normal: Does not go all the way to the right of the scale
Sport: Goes all the way to the right of the scale, at the 18 mark.
What I see with Durametric in Stock Mode, the actual measured boost:
Normal Stock 2020-910 = 1.110 bar = 16.1 psi at 3248 rpm, max engine load 154
Sport Stock 2250-910 = 1.340 bar = 19.4 psi at 3471 rpm, max engine load 172
What I see with Durametric and GIAC
Normal GIAC 2350-910 = 1.440 bar = 20.9 psi at 3421 rpm, max engine load 194
Sport GIAC 2550-910 = 1.640 bar = 23.8 psi at 3343 rpm, max engine load 222
Basically in the stock car, the stock gauge reads 15/17 but measured real boost pressures are 16/19, from my measurement below:
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>
https://www.6speedonline.com/forums/...ed-giac-8.html
What I see numerically:
Normal: 15 psi (not 14, but 15) at around 3000 rpm. I believe this is because 1 bar is 14.504 psi, rounded up to 15 psi.
Sport: 17 psi (never 18, only 17) at around 3000 rpm. I believe this is because 1.2 bar is 17.4 psi, rounded down to 17.
Ah... German engineering's precision and logic, even in rounding.
What I see with the bar graph: The scale is psi-9-18 regardless of mode.
Normal: Does not go all the way to the right of the scale
Sport: Goes all the way to the right of the scale, at the 18 mark.
What I see with Durametric in Stock Mode, the actual measured boost:
Normal Stock 2020-910 = 1.110 bar = 16.1 psi at 3248 rpm, max engine load 154
Sport Stock 2250-910 = 1.340 bar = 19.4 psi at 3471 rpm, max engine load 172
What I see with Durametric and GIAC
Normal GIAC 2350-910 = 1.440 bar = 20.9 psi at 3421 rpm, max engine load 194
Sport GIAC 2550-910 = 1.640 bar = 23.8 psi at 3343 rpm, max engine load 222
Last edited by cannga; 07-26-2013 at 04:39 AM.
#7
Wow thanks for all the info. Will an AEM boost gauge reflect true boost level then if I put one in?
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#11
Car is vomiting.
Put on a mustang dynamometer and was told I should be 430-450 by evoms as they run the same Dyno. Stock turbo should be 380ish.
Mine ran 350/376. Sometimes it sounded good but the power wasn't shown. Other times it was a very gradual rpm run up like it wasn't in boost at all or was pulling massive timing. Evoms is looking at the data log and said the car is not happy at all. They want a smoother band and much more power. Doing smoke test on Monday at Porsche that did the install. Then upgrading to evoms silicone clamps/hose kit and another smoke test with Dyno run next Friday.
Had the left intake hose completely disconnected when we opened the trunk. The right intake plenum boot was on but the clamp completely off. Had 2 runs where the clamp on the y pipe to throttle body failed and popped under pressure too. This is why we are replacing them all. Not sure why porsche would install those on there if they were past their life.
Put on a mustang dynamometer and was told I should be 430-450 by evoms as they run the same Dyno. Stock turbo should be 380ish.
Mine ran 350/376. Sometimes it sounded good but the power wasn't shown. Other times it was a very gradual rpm run up like it wasn't in boost at all or was pulling massive timing. Evoms is looking at the data log and said the car is not happy at all. They want a smoother band and much more power. Doing smoke test on Monday at Porsche that did the install. Then upgrading to evoms silicone clamps/hose kit and another smoke test with Dyno run next Friday.
Had the left intake hose completely disconnected when we opened the trunk. The right intake plenum boot was on but the clamp completely off. Had 2 runs where the clamp on the y pipe to throttle body failed and popped under pressure too. This is why we are replacing them all. Not sure why porsche would install those on there if they were past their life.
#12
blowing off ypipe and such is pretty common if you're using bad clamps or not tightening all the way. Should be an easy fix to keep it all together. But I'd be very unhappy with the porsche dealership that installed if they didn't bother to tighten the clamps properly...