i have an 07 cobalt LS auto my current mods are C.A.I. 2.4 IM tsudo n-1 and b&m shift im think about headers next then mounts what do you guys think?

 

I'd say Header/DP and a tune.If you can,go catless and tune for it.You'll notice a big difference

 

my car wont communicate with scanners anymore lol. what header and downpipe would you recommend? i dont much about exhausts

 

Badmab header/zzp downpipe is my favorite combo.Great prices and awesome quality!

 

ok cool. whats a possibility why my car wont communicate with scanners? lol ive checked my fuses and none of those are blown but oither than that im stumped on where to troubleshoot for that

 

Like the obd2 port isn't getting any signal when you plug something into it?

 

this

 

nope. when the scanner is hooked up my car doesnt even try to connect the scanner wil read "please connect scanner to vehicle" or whatever it says when you turn it on and i have no idea why its doing this. if it costs more than a couple hundred to get it fixed then im just gonna get rid of it but i f i can fix it myself that would be awesome

 

is your cigarette lighther working in your center dash?? if not u have a blown fuse in the inside fuse panel