It looks like I am going to exchange my Hi Flow Cats with APS Test Pipes in order to get the additional power....even though I truly hate having to do that because I am a bit of a tree hugger

My question: do the APS Test Pipes throw a MIL?

 

Are you serious? You don't know this?

I was told that APS has incorporated a fix into the unichip for this, don't know if this is true, but GRD pulled my nonfoulers off during my engine build/tune and I haven't thrown a code.

If you do throw a code, buy two sets of HELP! nonfoulers 42002 at autozone search the forums for a how to

 

I have the APS test pipes, with non foulers, and have never thrown a code yet.

 

Since I never even considered getting Test Pipes I never bothered researching this...

thanks for the info

 

what are nonfoulers?

 

Search is your friend:
LINK

 

holly crap I got the "Search is your Friend" reply....I invented that one....

 

The APS kit does incorporate a fix for that CEL code that removing the cats can trigger.

 

Will the APS 3.5 inch down pipes fit the greddy twins?

 

what does that have to do with APS Test Pipes throwing a cel?

wrong thread...

 

Hater!

 

not hating, but you're asking a completely unrelated question when there are plenty of threads that could help your question.

 

NO