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Discussion Starter · #1 · (Edited)
I’m a new member, but I’ve had my 2009 G5 for 3 years. 147k miles great reliable car, but I can’t find a good tuner or anyone to remove the speed limiter. I was told Trifecta and had no luck. I want to hear your guys top speed? I have been 124 coasting down a long stretch of highway, but my limiter still kicks in at 110 and doesn’t rev past 4K but slowly coasts to the 120s. The biggest question I’ve seen on all 2.2s is how to remove limiter and I’ve still had no luck? Help

My car has:
ZZP CAI
ZZP shorty headers
Spectre Air Filter
W- rated Continental Extreme Contact All Season DW06 tires 205/55/ZR16
ZZP tower strut bar
Trifecta tune
Car best- 0-60: 6.8 1/4 14.00 top speed: 124
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So Delicious !
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Welcome to the Club !

they are the 2.2L tuning people and sure would have thought it would have been removed or raised with a canned tune !
 

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Discussion Starter · #3 ·
There were only a couple tuning options I saw on forum, and no one in the CT area can seem to help me. I’m trying to find any shop in New England or east coast that I could just pull up get tuned and pay. I should of went with hptuners, but instead I went Trifecta and choose wrong with the limited options. And I don’t think the abs or bcm module is why my car still hits limiter and coasts by it very slowly. Also I don’t know if my tires being worn, if that even affects 0-60 that much, but I would run consistent high 6s low 7s 0-60s, and now I run high 8s low 9s which is very slow. I don’t know even if it’s the new tune update I flashed or what. But my car isn’t running as quick as it used to, I think maybe tune. And I spent a lot of money on whole set up for a car that can easily go past 110 but hits limiter after pulling hard and can only coast past 110, ruining the experience and I have no clue what car would feel like if it revved past 4K rpms at 110 all they way to redline or at least in my car I seen some of my shifts happen at 6800 rpms, so my car pulling another 2000 plus rpms I wanna know what that top speed would be. But my response from tuner wasn’t helpful and I wasn’t trying to argue. And of course I can’t find any hand held tuning program devices. Spent 300 for a tune and what I want most was limiter removed and it’s not can only coast by it sometimes.
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2007 G5 GT in Fusion Orange. Lightly modded
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Nice pic and welcome!
 

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I figured Trifecta wouldn't provide support. Look into this:

HPTuners is the way to go.
 

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Discussion Starter · #7 ·
I figured Trifecta wouldn't provide support. Look into this:

HPTuners is the way to go.
Thanks, wish I choose hptuners first or there were more options like those hand held programmers were you don’t need a computer.
 

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Discussion Starter · #13 ·
I don't think that is possible.
Yeah I didn’t really know, but the 2009 GT is the same engine and everything just different suspension, brakes, wheels and tires. But the ecu has the top speed set higher but not by much.
 

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2007 G5 GT in Fusion Orange. Lightly modded
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Would I be able to use a 2009 Pontiac G5 GT ecu in my car?
As far as I know, the ECU's have the VIN and mileage programmed into them, somehow. The car also has another computer somewhere in it and it also has the VIN stored, as well as records the mileage. If the two don't match, the car wont do anything. In order to get this to work, you need to find somewhere with the software to open the coding and manually change the ECU to match the car.
 
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