i have a 94 GMC 2500 2wd with the 5.7 TBI i am putting LT headers on it (heddman i believe) i was wondering what everyone does with the O2 sensor? i am planning on running the 2 headers with 2.25 pipe back to just past the tranny then have them come together into a 3 inch collector then going single out the rest of the way. my question i guess is will moving the O2 so far downstream from where it was originally will this cause negative side effects? . or should i weld a bung into the header on the pass side and just put it there? however this would mean it is only sampling from that bank of cylinders and im worried that would have negative side effects........ any input/ideas?
thank you
thank you