Ok well have you checked your sensors again? Just to make sure I am reading this right... when datalogging was that IAT1 or IAT2 you were reading... if it's IAT1 (maf, which is still in the intake tube right?) then I could see 113... but if its IAT2 which, I believe but I could be wrong, is one of your MAP sensors (the Tmap in the intake mani I think), then you might have a messed up sensor. As far as the wastegate solenoid, I read that you removed and checked it. But unfortunately in these cars the wastegate is only one of about a bazillion things that has an effect on boost... a more likely culprit is a sensor acting up, followed by a Vac line leak, then a messed up bpv, then a messed up actuator, all that if there isn't still a boost leak somewhere that is being a little bitch to find.

What were your MAF readings and AFR readings at WOT? If you have the HP log file, take a screen shot of the part where the car is tripping over its nose and maybe one of the tuner guys on here can better diagnose the issue... the kicking and bucking sounds like my car every time it rains, under WOT the MAF is just freaking out... condesation in the pipes or something... I have swapped MAFs cleaned them, cleaned pipes, all is a temporary issue until the weather drys out and the car seems fine.

 

MAP Sensors are both brand new, nothing wrong with them. When I have the stock intake on....the temp reading is fine...no problems. I'll just put the stock intake on for now...no biggy.

There are no codes being thrown at all.....which is completely retarded. The wastegate has been checked, the vac lines are fine, I installed a brand new forge motorsports BPV, I checked the actuator nipple it's fine, I've done a boost test....it's not leaking.

I'll have to get ahold of him to see what the readings were....whatever they were...seemed fine though...nothing to make the boost act insane. One thing he did say is that when it's at WOT...the TPS is only opening up to 80%....do they not open up to 100% on the LNF's?

 

Took the car to the dealer....they said they would look at it...and thats all. They said they will not do any work to it unless they find a warranty problem. They said they will reflash it for me for $160.00. The said they've "already done their part". Being complete asses about it.

They said "you bring a part in here that we put on....it could be a problem with the part!!" I told them that it's a damn GM part...it's under warranty! They do not want to listen to anything I have to say.

My question is....do you guys think I should pay the $160.00 to have it reflashed?

 

there is either one in the hptuners repository or someone on this site has an 08 gms1 tune. i would not pay to have it reflashed. find someone with hptuners and someone here can send you the tune.

 

I'm still here bro.

 

I would think it's the ECM itself before I thought it was the flash.

I also have two spare ECMs. If you would like me to ship one of those to you to get flashed with whatever tune you would like, I would be willing to do that, as well. Just let me know. I'm in the Christmas kinda helpful mood.

 

Man, that would be really really awesome. So basically...you send me the ECM...I plug it into the car...install either an HP Tune or Trifecta Tune? So basically....the GMS1 Tune would be gone? Would having the 3 bar sensors affect with stock ECM though?

 

I'm just saying if you narrow it down to begin a bad ECM, I have one you can swap out and try. You'll have to get a tune put on it for your vehicle. The 3bar sensors would be tuned for in your HPT tune or Trifecta tune. If you're going to purchase an HPT or Trifecta tune, you might as well try it on your current ECM first. If you still have problems, then you can try my spare ECM. Your problem doesn't sound like the tune to me.

 

So...Vince should be able to override the GMS1 tune? Just making it a pure Trifecta Tuned ECM? No engaging the tune....just a tune that's always there 100% of the time? If this is true....I'll see if Vince can just override the GMS1 with his tune....and see if that improves anything...

 

Vince's tune is a different software, so it overwrites everything. You can store your stock tune and put it back on the ECM, but the dealership can tell a reflash if they look. Your Trifecta tune with have two selectable boost options controlled by the cruise control or traction control button. The boost levels are your choice and the button is your choice. It'll cost you double the amount the dealer is asking you, though. It'll be around $320.

If you work through a distributor, it's a little easier to get tune adjustments than if you buy the cable and do it yourself, but I think there's a deal going on right now for the cable. HPT is the way to go if you want to be able to monitor your car, but it's about $450. With HPT, you can also save your stock tune and flash it back.

 

I already have a custom Trifecta Tune though.....

So....your saying I would have 2 Trifecta Tunes on it basically? A little lost here...

Right now....I have the GMS1...which is on all the time. If I put it into COMP mode...the Trifecta is engaged...

 

Could anyone tell me how to remove the wastegate solenoid

 

I have a theory... but my theories don't usually make sense to most people...

Im assuming you don't have a scan tool that can read live data, so we can do this the fun way...

Take your air filter off and put your finger tips on the outer perimeter of the intake pipe with your palm as far away from the pipe as you can get it... (be careful as the intake may try to eat your hand).

get a friend to start the car and spool the turbo... holding at 1/4 throttle then holding at 3/4 throttle, dont bounce it off the rev limiter it will negate the reason for doing this.

Does the intake try to eat your hand? when holding at 1/4 throttle does the suction from your intake dissipate with time, same question for 3/4 throttle.

If your intake tries to eat your hand and stays like that, forget I posted this. If it doesn't, post and ill try to make the mess in my head make sense to you.

 

This thread is 3years old...

 

hmm... good call... i just looked at the last post date...