2.0L LNF Performance Tech 260hp and 260 lb-ft of torque Turbocharged tuner version.

What did I do?

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Old Mar 31, 2010 | 12:38 PM
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StreetDrag03's Avatar
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From: Ocala, Florida
What did I do?

So yesterday, car was running fine, and then I came around a corner at 1.05g's according to my RPD, and as I left the corner at WOT in 2nd, I noticed it was extremely slow. I tried getting on it a few more times and according to my RPD I was only boosting 13psi and getting about 200HP. I reset the car, and still had the same problem the rest of the way home. Once home the car sat for about 2 hours til I went somewhere else. This time when I got on it, I was making my full 22psi. Does anyone know what I may have done so I can not do it again lol?
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Old Mar 31, 2010 | 12:43 PM
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From: Vine Grove Kentucky
Umm possibly iat2s were to hot, car seen knock, bad waste gate, faulty charge piping or loose. just check things. im not for sure tho.
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Old Mar 31, 2010 | 12:52 PM
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If your going around a corner, the ECU will cut some power in my experiance.

Edit: NM, noticed it still had the problem. Sounds like some sorta problem listed above.
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Old Mar 31, 2010 | 12:57 PM
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I was thinking, if your going around a corner and you loose power even after the corner. You more then likely have loose piping somewhere, that is what it looks like, because when you went around that corner you gave the car to much force one way which could cause piping to easily come off if loose or hot which would make the piping if stock expand, and when you parked, it could have shrunk.



Another thing is your car could have somewhat went into a limp mode stage only making so much boost because iat2 got hotter then hell, kr, or somthing to that sort.
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Old Mar 31, 2010 | 01:09 PM
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How long of a corner was it? Sustained lateral g's can starve the engine of oil temporarily.
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Old Mar 31, 2010 | 01:20 PM
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It was a very quick 90 degree corner. When I got home, I checked to make sure everything was tight. I couldn't find anything that was loose, no gms1 sensors and charge piping or anything. It stayed running like that for the ten or fifteen minute drive home, but like I said, I let it sit for like 2 hours, and it worked fine. this car confuses me lol...when I first got it, for the first 10k miles it was spitting and sputtering (it would make 200hp then drop to 150hp then 250hp then back to 200hp) it as basically giving me whiplash. I took it in multiple times, and noone could figure out what was wrong, it even went as far as one checkup until lemon law, and then it fixed itself for like 6 months, and the had one bad day and has been fine ever since. this thing just likes being weird i guess lol.
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Old Mar 31, 2010 | 01:41 PM
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You aren't going to starve the engine of oil in a turn. The oil pan is well baffled. Here's a similar thread to yours though:

https://www.cobaltss.net/forums/08-10-ss-turbocharged-general-discussion-152/bone-stock-t-c-limp-home-mode-really-bad-time-208645/
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Old Mar 31, 2010 | 01:56 PM
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From: Ocala, Florida
Originally Posted by Wangspeed
You aren't going to starve the engine of oil in a turn. The oil pan is well baffled. Here's a similar thread to yours though:

https://www.cobaltss.net/forums/showthread.php?t=208645
Thanks for the link, I've seen that one before, but I didn't throw any lights and I had over a half tank of gas, and it was only 1 corner.
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Old Mar 31, 2010 | 02:18 PM
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This might sound like a stupid question, but which way was the turn you did? Thinking about what it might be that lateral G could affect. Some cars are known to have a complete fuel cutoff beyond a certain G. It wasn't uncommon for Corvettes with sticky tires to suddenly shut down at the auto-x. The car thought it had wiped out and shut off the fuel completely.

..and on another note, what kind of tires do you have on there? lol
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Old Mar 31, 2010 | 02:18 PM
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still check for a boost leak!!!! Its gotta be something with the boost. check maf sensor clean it out, air filter or fuel filter jsut check everything with the fuel. maybe the pcm sees somehting you dont!
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Old Mar 31, 2010 | 02:23 PM
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From: Ocala, Florida
Originally Posted by Stamina
This might sound like a stupid question, but which way was the turn you did? Thinking about what it might be that lateral G could affect. Some cars are known to have a complete fuel cutoff beyond a certain G. It wasn't uncommon for Corvettes with sticky tires to suddenly shut down at the auto-x. The car thought it had wiped out and shut off the fuel completely.

..and on another note, what kind of tires do you have on there? lol
it was a right hand turn and I've seen as high as 1.09g before and never had a problem, and I'm running Goodyear eagle f1's

Originally Posted by Chevycobaltss3
still check for a boost leak!!!! Its gotta be something with the boost. check maf sensor clean it out, air filter or fuel filter jsut check everything with the fuel. maybe the pcm sees somehting you dont!
Yeah, I'm gonna take more time and get a good look at it either today or tomorrow.
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Old Mar 31, 2010 | 02:41 PM
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good deal bro!!
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