Is there a difference in the egt drop between installing a cat back on the LLY and installing a LB7 downpipe and a cat back?
Does the Kat pipe really interfere that much?

mine still gets hot but the egt's seem to drop faster

I dropped the cat, but went with the 4" down pipe. EGTs dropped about 75-100 cruising speed. The huge difference was what Socal said, they dropped faster.

When my kitty ran away I saw the same drop in EGT's. Towing is where you'll really see it though. Anywhere from 150-200 degree drop over what it was.

Wow, for a second there I thought McRat and Kat were having marital problems. :lol:

I have an '02, so I don't worry about a cat. So, I have nothing to add.

Tom :eek:

God I hadn't thought of that.:eek:

That would be really bad since my wife should be getting her 'Vette in about 6 months and I was hoping to have some of KAT rub off on her.):h ):h ):h

My egt towing dropped about 100 degree on lond hard pulls.

Im catless and strait piped on my LLY and pulling a 16 ft enclosed trailer loaded pretty heavy I was seeing 1000 to 1100 deg. consistantly, juice on 1.

I have an LLy cat back and my EGT bounce from 1000-1100..I have the down tube.I think i will try it this weekend..what is everyone running for EGT shutdown on theyre programmer?I am at 1350 and hit that very easily