Hi guys,

I hope this question is in the correct section, but here goes....

I have a 470BHP Newage STI with a 200 cell sports cat and LINK G4 ECU.

My question is, that if I fabricate a decat section with flanges, so that I can remove the cat and bolt in the decat for track days (and using my flamer kit at shows) will I throw a check engine light? Basically, I plan the include the O2 sensor in the decat pipe too.

There is no cat from the turbo back, jus the small race cat in the straight section underneath the car.

Can I get away with it?

 

make two maps one for mot one for decat