Hi I went out today to hook up my hallman MBC, i followed the directions step by step and plugged the stock boost sylenoid and ran the lines to the right ends. i started the car up and it idles like crap and pulse to stay on moves from 800 to 100 RPMS and also the check engine light came on. I installed the MBC because i was running 12 PSI max. What should i do please help?

 

You didnt hook somethink up right. Its hard to help you cause theres alot of things you could of did wrong. and we cant see what you did.

Get your car scanned to see why the check engine light came on.

 

Installing MBC and raising the boost is not the right way to fix your low boost problem. If I were you, I would fix the problem first before installing MBC before things gets worse.

 

Look for leaks.

 

Also make sure you plugged your MAF back in