recently had my gms1 kit installed on my 10' ss t/c. how much boost does the upgrade give you? doesnt feel like i got that much more.

 

If you want a Trifecta tune on top of that,let me know.As for boost I think some people are getting 21 or so.Which dealer did the install?

 

look at the boost guage...
idk how much boost the GMS1 gives you but its more then stock so I am told. Is it more than 15-17?

 

I was under the impression that it's 20psi

 

before the gms1, i was at 16.5-17psi... according to the rpd max so far w/ 60 degrees outside is 19. it was installed by darcy motors in joliet.

 

darcy motors? like a chevy dealership? it has to be installed by a chevrolet dealership so they can program the car after all the sensors and what not are installed... and should be boosting somwhere between 20-22 i believe

 

there a gmc/buick dealership... i just got back from driving and only had 4 psi.

 

now only having 4psi? well take a look at the sensors... make sure that they are snug and fit because ive seen those new sensors and they really arent the best fit one for the manifold. but if placed right can still do the job! with only running 4psi it sounds like your boost leaking somewhere all i can say is look around and see if you can hear anything louder than normal or weird noises in any specific places. id personally check the sensors tho

 

ok thanks for the help

 

is it also possible that the dealer calibrated the part incorrectly?

 

Did they do the flash?

 

They probably wired it wrong like the pile of other dealer ships who cant properly read a schematic....... you should of had a garage do it or done it your self. If it's not that then its a boost leak by not swapping the o-rings on the t-map sensors, or If you have stock lower cp it probably wasn't shaved of the plastic boss.

 

just install trifecta tune in my stock 09 ss.
Glad I did not bother with gms1 this car halls @#$

 

i was at like 15 or 16 stock and with the gms1 im like 20 or 21, but i wanna get the trifecta tune in spring now so i can have a little more lol

 

under rare conditions i have seen my car holding 25psi, usually its holding 19-22

 

I can easily hold 22.5 psi on a 70* day. I've spiked 25 before in the same conditions.

 

Stock for me: 14-17
GMS1 for me: 19-21.5 I have spiked 25 about 10 times, but that was a fluke & I fixed it.

 

i tightend up the sensor near the manifold and its boosting back up to 18-19.5 w/ outside temp of 65 degrees. no sign of any leaks... maybe they flashed it wrong

 

it would barely run if it was flashed with the stock tune file. Sounds like a loose connection to me. Check the connections at the MAP.

 

you guys are aware thats its boost on request right? the computer asks for how much boost it needs to make power level xyz. Being that this cat is in illinois, he may need less boost to make the same power. iirc

If it was flashed incorrectly, youd have a hell of a lot more problems than a 1 psi difference.

Your fine sir, its all psychosomatic at this point.

 

Could be anywhere between 17-22 depending on elevation And ambient temp.

Stock could be anywhere from 14-18 on that note.

 

Depends on how much boost you need to hit the torque load requested in the ECM.
Ive seen 21.5 sor far at the highest on a cooler day say 40s like it has been recently in Chicago I see around 19.

 

The reason I say check wiring is because he said it went in to limp mode on him....

 

in ohio i hold 20 to 21