Red Sun

Ok guys I have a 09 turbo. When I bought the car a year ago it only had a GM stage 1. I put in a Hahn cai about 2 months ago with no problems expect a lean code which I cleared and never happened again. And just today I decided to wot in 2nd to 5th and I couldn't go past 10psi. Mind you I used to boost 20-21 before this problem. Any thoughts? Thanks.

Chevycobaltss3

iTrader: (2)

Checkout for a boost leaks more then likely inntercooler or chargepipes

Red Sun

How do I test this.

Red Sun

Bump

Chevycobaltss3

iTrader: (2)

Boost leak tester. Modern performance sell them. If you have the stock intake put it back on and go to the dealer.

Red Sun

Thanks for the input. The problem wasn't a leak. It was my maf. Oil from the kn got in. So flushed out the filter and cleaned te maf. Runs like a champ now