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Discussion Starter #1
Hello,

I'm hoping I can get some help here. I'm the owner of the Solstice that you guys built back in 06 to build your turbo kits for these cars. I know its been in a couple different hands however I'm hoping I can get a couple issues fixed on how she runs.

Runs good tell I get into boost and at about 4,000 RPM's it will studder and cut out really bad. I have checked all my clamps on the turbo, intercooler etc and everything is tight. My AFR goes crazy rich when this happens and I can only hit 5-7 psi.

As far as I know, the tuning has been messed with however I'm not sure what all was changed.
 

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Hello,

I'm hoping I can get some help here. I'm the owner of the Solstice that you guys built back in 06 to build your turbo kits for these cars. I know its been in a couple different hands however I'm hoping I can get a couple issues fixed on how she runs.

Runs good tell I get into boost and at about 4,000 RPM's it will studder and cut out really bad. I have checked all my clamps on the turbo, intercooler etc and everything is tight. My AFR goes crazy rich when this happens and I can only hit 5-7 psi.

As far as I know, the tuning has been messed with however I'm not sure what all was changed.
My 06 Werks Solstice story starts off just like yours almost. I bought it used from a novice car enthusiast (he was in over his head with this car), so the history is unknown.

Under WOT near 3,500 it would mis-fire like crazy, studdering and no power. A WBO2 I added showed AFR drop to near 9:1

When I opened the PE Enrich table RPM vs. AFR command, it looked like this mountain.

The recalibrated the VE table and MAF airflows and flat-lined the PE Enrich to look like this.
 

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Did you ever get yours running right? What are you using to data log?
Heck yeah, runs pretty good. HP Tuners. There was an existing tune with unlocked torque management, it really just needed airflows calibrated after adjusting the PE table to one EQ ratio command across the table. VE calibration on the E67 was done using HPT V2 and some magicbox program (Bluecat?) to convert all the tables into the familiar 3D maps.

I have yet to understand HPT Virtual VE as there is no information on how to use it as of last year.
 

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You guys should contact Lyndon Wester at Westers tuning in Canada. He works with HP tuners and has his own tunes as well. He's capable of anything you can throw at him. I gave him my ECM for a week and he unlocked the LS2 Edit programme and retuned my LS3 Sols, and it runs far better.
 

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Hello,

I'm hoping I can get some help here. I'm the owner of the Solstice that you guys built back in 06 to build your turbo kits for these cars. I know its been in a couple different hands however I'm hoping I can get a couple issues fixed on how she runs.

Runs good tell I get into boost and at about 4,000 RPM's it will studder and cut out really bad. I have checked all my clamps on the turbo, intercooler etc and everything is tight. My AFR goes crazy rich when this happens and I can only hit 5-7 psi.

As far as I know, the tuning has been messed with however I'm not sure what all was changed.
Is this the car that has the ebay turbo on it now? Need to get that replaced with a good turbo firstly but I can certainly help try and diagnose what is going on. I need to see some data using hptuners, do you have an HPtuners interface that you can datalog the car with?
 

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Discussion Starter #7
Yes it is. I need to replace the turbo. I have a obd2 computer cable but not one from hptuners.

Sent from my VS995 using Tapatalk
 

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Yes it is. I need to replace the turbo. I have a obd2 computer cable but not one from hptuners.

Sent from my VS995 using Tapatalk
Ok, you will want to pick up an HPtuners interface - Performance Autowerks or see if you can have someone local to you datalog it with HPTuners and then we can try and get a better idea of what is going on.
 

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Discussion Starter #9
I run a auto repair shop and I have a snap on modis ultra that I can data log with. I understand it won't log wideband but I do have the gauge. Spending $500 is kinda steep for me.

Sent from my VS995 using Tapatalk
 

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I run a auto repair shop and I have a snap on modis ultra that I can data log with. I understand it won't log wideband but I do have the gauge. Spending $500 is kinda steep for me.

Sent from my VS995 using Tapatalk
You can try and send me some data to look at using that tool. Where are you located?
 

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Discussion Starter #12
Well I just blew a head gasket. I had a boost spike to 30 psi and before I could back out white smoke. So I'm going to be needing some new parts lol

Sent from my VS995 using Tapatalk
 

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You can't do any boosting without the proper tune. DO NOT EVER push your car if you have replaced the turbo and not changed your tune. Guess you found out the hard way....sorry.
 

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Sorry to hear man, that car should have only been running at 13-14psi max. If you need anything just let me know.
 

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You can't do any boosting without the proper tune. DO NOT EVER push your car if you have replaced the turbo and not changed your tune. Guess you found out the hard way....sorry.
I never touched anything lol. It just spiked up out of the blue.

Sent from my VS995 using Tapatalk
 

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I never touched anything lol. It just spiked up out of the blue.

Sent from my VS995 using Tapatalk
I understand. But, you knew the PO took the turbo off before selling it. That right there is a red flag too me that he probably didn't retune the car. Without a proper tune for a new turbo, bad things happen like you found out. You also knew there was a cheap ebay turbo on the car. Another bad sign. These are very unreliable to produce consistent, smooth boost. They are usually spiky. If you had bought it from a dealer rather then a private seller, and one which you knew he swapped turbos, this is an issue. Chalk it up to learning a valuable, expensive lesson. I'm not trying to be rude in any way, you yourself said it had a cheap, ebay turbo. And with any turbo/supercharger, a car with an improper tune is going to break something, most of the time it's the headgasket... I'm sorry for your expensive loss. Now it's time to tear it apart and put a new head gasket on it!!!

When I was going for my dyno tune, the mechanic put my 3bar sensors on in one garage and I had to drive my car 1/4 mile down the road to the dyno....he wouldn't even touch it and wanted to charge me $300 to tow it to his dyno garage. And he was the one tuning it!!! So I had to be extremely careful and feather the throttle to get it to the dyno....no boost at all!!! I did make it, and I was dyno tuned.
 

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Discussion Starter #18
Its no big deal to me. I knew something would brake. I will just build it better. Ordering parts today

Sent from my VS995 using Tapatalk
 

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See the turbo spike is what makes no sense to me (i am the last owner for the past year) anyways, when i got the car at the beginning it sure was messed up, tuned bad, running rich, well Dave from Autowerks knows all about it, he reflashed the tune for me since the last one was locked and from that point i did full fluids change to Amsoil, changed sparks and tuned up the engine in general. After that, i put it on a dyno for a whole weekends worth of tuning from scratch, car drove off the running really good. Even with the ebay turbo, it had all new gaskets and all, 16psi was the limit so we backed out to 10psi which dynod 338hp. That was the safest tune and it sure was plenty of power for a car that size. I sure enjoyed it, drove it as my daily and never had a problem with it, like i said, i was very happy with it, still wish i had never got rid of it. As for the boost spike and all, im not sure what happened there, maybe after all that ebay turbo was going out, i know i took good care of my solstice, and for sure getting another one very soon! :) Just sad to see such a nice build blowing a headgasket. :(

2006 Pontiac Solstice Performance Autowerks
 
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