[Maxion$Mulla$]

This means i can drill out all of my cats and not get a check engiene light right?

 

[JustinH]

right.

 

[Maxion$Mulla$]

great, but now im trying to figure out why i got 2 too lean codes even if my rears are turned off and i know my cats are clogged.idk but it makin me pissed

 

[Red96Bird]

the lean code will come from your front O'2s not ur back ones, so if ur running lean, you either have a vacuum leak, or a fuel system issue, ie (not enough pressure) or something along those lines.

 

[master486]

I'd bet it's your MAF sensor. Clean it if you haven't. Also, make sure your plug wires are good because a misfire can cause that code as well, and misfire codes aren't always logged. Maybe the clogged cats are causing it.

 

[Maxion$Mulla$]

im gutting the cats now, but im having trouble doing it. how did you guys gut your top cats and how did you pull out that what looks like a brillow pad stuff?

 

[Red96Bird]

hmm...had a shop make a new Y pipe, and replace all 4 studs in the exhaust manifolds.

 

[Maxion$Mulla$]

yea i ended up breaking one of the studs, i cant wait to buy a new one so im just going to use a bolt instead.