i just came back from doing a base line run.i have a dual exhaust on my car and when we did the run, the O2 senor was only inserted in one of the exhaust.after the runs on the dyno. we saw that i might b running lean.(14/1 ratio). but the fact that i have 2 exhaust comes in play. so wat do u guys think, running lean or not?

 

i am not expert here but y couldnt u put the o2 sensor before the exhaust piping splits up. ??

 

Pull your plugs and look at them, i believe if they're white you're running lean.

 

He probably isn't splitting his exhaust. Its probably 2 different pipes the whole way. I always thought that 14-1 was pretty much what it was supposed to be. Maybe I'm thinking 17-1. Anways, just get it tuned using 1 O2 sensor and you'll probably correct your problem.

 

i can;t put the O2 sensor b4 because there is no space for me to gt in.its one exhaust splitting into 2. so if the plugs are black then the car is fine? thanx.

 

disconnect the exhaust and run the o2 sensor right off the downpipe if this is the turbod hatch were talkin about.. youll pick up a couple more ponies like that and get a more accurate a/f reading....

 

I believe the car he's talking about is boosted....