only getting 6 lbs of boost
 

I installed bad-mad catless down pipe first and everything was fine. This week I installed Hahn cold air. Engine light is on and I am only getting 6 lbs--HELP! Did not go in to find out what cel code it is.
09 tc/ss 48,000 miles

Bump

Im guessing the intake fucked your shit and you need a tune.

6psi sounds like limp mode

Have you considered putting the stock intake back on to see if it's causing the problem?

Maybe you should find out what code that is......ya know...useful information is typically gleaned when you know wtf the computer is trying to tell you....

Did you mess up the connector on the intake housing?

ive seen this once, the intake skewed the trims so far off it through a lean code and went limp. also check your plug on the intake and sensors everywhere where u were working. Also get the code scanned soon.

Thread is pointless.. You installed some mods, didnt tune for them, Got a check engine light and want everyone else to tell you whats wrong with your car.. its common sense. Scan the car and find out what the code is then people can help you. If help is even needed. Your maf is probably way out of whack as stated above throwing you into limp mode. You most likely need a tune/or retune. A aftermarket down pipe and intake are going to flow a lot more air through the motor than factory so the computer has no clue what to do.

Maybe you put the MAF in backwards? The arrows should go towards the turbo.

hahah this is what exactly happend to me after i installed the mab bad catless dp, i just checked the codes and ruled them out, unplugged the battery for 20 min then it ended up going away and the maf sensor code came up cleaned the maf then no more issues with low boost 6-7psi my car was lean so i checked under the hood for a leak and it was my dip stick, it wasnt pushed all the way in and was letting air in. check all your hoses too.

so u think its the maf in reverse or intake leaks that is causing this we are gona tune the car soon as we get all the bolt ons in then tune once so we are not tuneing 5 times. this is my dads car were beginners and doing the best we can. thanks for ur help.

Let me guess you have 2 of these? Chevy Cobalt Supercharger

^^^^IS that a real ad? WTF

what the hell are u talking about man im asking for help with a real question. my dad and i both have cobalts TC same year different colors what does that add have to do with the help we asked for.

Its called a joke dont get your panties in a bunch

check that...it's in correct

Negative

clean your maf, verify all is tight and disconnect battery for 10-20 mins.

cant happen.....the bolt holes wont align to fasten the maf to the pipe

Did you ever pull the code? That will most likely tell us what the issue is.

Oh ok didnt know that, seems like if it could it would cause major issues lol

Lets see..on Sunday I pulled the battery fuse for 2 minutes and then reinstalled the fuse...cranked it up..drove to a gas station and filled it up without shutting the engine down...drove 137 miles from Jacksonville to Orlando while getting 15 pds of boost when needed....cranked her up again that same evening and boost was still 15 pds...made two hard runs and all seams fine except I have an engine light on...I'll find out why the light is on tomorrow at the dealer while I get my oil changed....I thank all that actually tried to help without useless profanity.:usa:

I'm with RYRO14.

Scan it and that will point you in the right direction. Hit Autozone, they'll do it for free. Much easier than guessing
Just check all your connections, etc. I left the vac hose off the BPV once. If you want to check quick before you take it to scan it just take your time. Walk through all that you had to disconnect and check them.

Sounds like limp mode to me too.

the 6 lbs of boost problem turned out to be a stuck sensor. The dealer replaced it for free...all is good now.

Stuck sensor? Sensors don't "stick." :)