dannyboy_1320

So I ordered an hpipe last week and it should be arriving by the end of the week. However, I was considering removing the factory mid pipe tonight and running open headers for a few days for ****s n giggles. My only concern with this is how the engine will run without the o2 sensors. I believe it will run more rich than normal but will this have any long term effects on the car? For example will I have to get my car tuned when I get the o2 sensors back on with the new hpipe?

Z28KLR

Bad idea.

You risk engine damage driving around with open manifolds (I assume this is what you have, and not aftermarket longtubes), and even if we dont consider that part the upstream 02 sensors are critical to engine management. Will it start and run without them? Sure, probably anyway. Will it run like absolute dogsh!t? Without a doubt.

WhiteFoxGT

dont run around with open headers... you can start and idle for a few minutes but without front 02s it will run horribly. dont drive it like that

imp

It has always been said that running an engine for long periods with either no exhaust pipes, just manifolds, will result in "suck-back" of cold air, that can damage exhaust valves. True? I never found out! imp

Z28KLR

My understanding as well. Maybe OP can give it a try and let us know? Lol.

dannyboy_1320

Ive read/ heard from many sources that valve damage from open headers/ manifolds is just an old wives tale. I will not be running open headers anymore as I don’t want the car to run like **** due to the o2’s and cause my H-pipe finally arrived . Heard the UPS truck from like a block away and was waiting for the delivery guy at the door lol.