Low boost (3.5psi) and like a limp mode
 

so I'm at a loss here I have looked up and read a ton of stuff and still can't figure this out... COMPLETELY STOCK NO MODS... so boost only show with petal to the floor and before 4k rpms, but normal driving i can here the turbo spool but not showing any boost. CEL showed MAF and had a new one already so throw it on there and cleared code and the car ran like crazy for almost two mile but would spool up too 10psi but stopped and back to 3.5psi... i have checked the MAPs and cleaned them and ordered the 3.0 bar ones, waiting for them to arrive. And all this just happen instantly one day. Any help would be great any question please ask i can answer... im just lost with this one... oh the engine has like 13k miles on it

Whats the code you got? Also you will need to tune the car to use the 3 bar map sensors

P0101 if I remember correctly, and yes I plan on tuning it for the 3bars

That code like 99% of the time means you have a boost leak. Since your are completely stock check your intercooler for cracked/broken end tanks. Would be best to remove the front bumper to inspect it.

Will do that thanks for the advice

No problem, usually a big boost leak with make the car idle really bad. If you find your problem report back

Awesome and will do

https://cimg7.ibsrv.net/gimg/www.cob...8b80d04338.jpg
So hole in the intercooler, poor design i think on GMs part i think all aluminum one coming though

Yup thats pretty common, time to upgrade into a better intercooler and that will fix your issues. Ive had a zzperformance intercooler for about 6 years havent had any issues

Thats what I ordered all my stuff comes from them... great people and great company

So while I was waiting on the intercooler to come in I did some plastic weld on that hole... put everything back together and now I have a hesitation with the throttle... like sitting still and while driving... sitting still in neutral if I give it gas it like jumps and takes like a half a sec to kick... same issue when driving and shifting gears it like bows from lack of power than picks right back up... ?? Just curious about this...

Cel p2187 system too lean at idle just showed??

The stock plastic charge pipes are known for issues and the stock diverter valves are known for sticking and the diaphragm ripping, on top of the intercooler failure

The stock plastic charge pipes are known for issues and the stock diverter valves are known for sticking and the diaphragm ripping, on top of the intercooler failure

I've lucked out with my stock intercooler. Still alive and strong. ZZP intercooler will be next when this one does finally die.