cat or no cat

heater

New member
Can I run not cat and still be fine, with no probs. By the way its a 1992 ty didnt know if it made a difference.
 

odium

1BADGMC
If you have the stock turbo with stock wastegate, no. You will get massive boostspikes.

If you want to run no cat, you need an upgraded turbo with a better functioning wastegate or an external installed on your stock setup.
 

tnsyty

Active member
I ran no cat on a 3" ATR exhaust on stock turbo. The boost will spike, but levels off. My biggest problem was boost creep. With the MBC set on 17psi it would still creep like 19-20 at speeds over 100. Not that many problems out of it though.
 

SeattleSy#1255

Category 5 Conservative
the problem is the WG on the stock setup. If you do it, i'd suggest an external gate with the stocker tack welded or wired shut.
 
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