kbon3599

I bought a SLP Powerflow exhaust system. I put about 50-100 miles on it and then my SES (service engine soon) light started to come on. It goes out form time to time but always comes back on. I replaced the plugs and wires and it is still on. I bought a code scanner and ran the test. It told me that i am running rich on the left and right banks. I have noticed a drop in fuel mileage also.

Does any one have a suggestion as to what they feel could be the issue? I opted not to have the systems welded up becuase i wasnt sure if i would love or hate the system and i wanted it to be removable and re-sellable if i didnt like it. Other than the exhaust, clutch and a cold air intake the car is all stock.

Any ideas on what could be wrong? How do i "fatten" it up? Could it be an exhaust leak do to not being welded? Could it be that the O2 sensors need to be replaced?

Thanks,

Kevin

thewholefnshow1

iTrader: (2)

If you could tell us the code it would be more helpful. On a side note have you recently put headers on or did you delete the cats?

RPM WS6

iTrader: (3)

Changing the catback alone would not cause you to toss a rich or lean DTC. You could run an open Y-pipe and not get those codes.

Like mentioned above, can you tell us the exact code?

udienow

iTrader: (18)

My best guess is your o2's are bad.

kbon3599

Thanks guys.

The codes i got were:

P0172 - Fuel Trim System Rich Bank 1

and

P0175 - Fuel Trim System Rich Bank 2

The car is completley stock with only a cold air intake and SLP prowerflow exhaust. No heads and cam YET.