Stainlessworks downpipes, need good and bad

[BiGMaC]

Interesting that Livernois doesn't feel you need a tune with catted downpipes. Our cars are not susceptible to boost creep?

I run PPE catted downpipes and LMS did adjust the tune for them.  This is an optimization move to take advantage of the earlier turbo spooling.  With non-catted DPs the change other than this is to turn off the last O2sensor as all tuners do to avoid a CEL.

I rans the stock for about 1000-1200 miles without problems.  The tune/tune adjustment is not necessary.... But improves power.

 

[gtmorgan23]

Its interesting about LMS updating their DPs with new cats. I wonder when they did this because their site still says;

Note; All high flow down pipes require tuning [the MyCal tuners work best!] and are not EPA approved and as such they are for off road use only.

 

[14SHOCAR]

The Stainless Works Downpipes saga with Corsa  -- https://www.youtube.com/watch?v=TyUZPMmCDxw

Yes you need a tune because you need to delete the rear o2 sensors in the catless pipes. If not you'll throw a CEL