No 'hits' in the Choo Choo Shop so I'll try here.... Anybody? I installed a 3" exhaust (single) on the '88 'burb 454/400 (TBI), and now I am getting an ses code 32. I figure it is due to the lower back pressure. Anyone have a fix for the egr with these exhaust mods? Al
Not sure what the code is (i'd check on what that is for sure. I COMPLETLY Dualled my 94 tbi 350 with a 2 1/4". no lights. where did you put the O2 sensor? I put mine in the very short H pipe.
O2 sensor is in the stock location since I just installed a single 3" cat back system. 32 code is egr system, these obd-1's are pretty vague.
Wierd. wouldn't think it would be any thing more than duals, especially on a big block. Try THIS LINK This is the one of the only sites that seem to help with my K1500s. Beware, there are no search functions and a ton of pop ups. but there is some information there.
