well ive tried almost everything and i still get poor gas mileage. My car runs great. I have the stock h pipe and i was thinking since they already restrict flow and my car having 85k miles on it, that they may be clogged a little. Could the exhaust fumes effect the 02 sensor reading if they aren't going through the cats like there suppose to be and coming back near the 02 sensors(then giving them false readings)? I will be upgrading to a offroad x or h pipe in a month or two when i get the money, but this was just a question that i had.
h pipe cats question
- Thread starter dkins419
- Start date
vikingpower
New Member
I use Bosch 02 sensors in mine, runs hard yet is decent on the gas in town, about 24mpg (before my TW heads) on the highway. Check the TPS, MAF, ignition timing, stuff like that, and get some good 02 sensors if yours are original. Could be your stock FPR, upgrade to a AFPR w/guage so you can adjust fuel pressure
o2 sensors replaced, iac cleaned, egr valve cleaned, throttle body cleaned, seafoamed it real good, new spark plugs/wires, cap/rotor, all fluids changed. Vac leaks fixed.
Im really just wondering if the cats on the stock h pipe could affect the 02 sensors if they are getting clogged.
Im really just wondering if the cats on the stock h pipe could affect the 02 sensors if they are getting clogged.
vikingpower
New Member
the stock h-pipe is definitely something you'll be glad to get rid off, shouldnt be "clogged" unless you're burning a lot of oil which would stick to the catylist mesh
04sleeper
Founding Member
I would say if they were old and clogged up it could cause your readings to be off and build up on your O2 sensors.dkins419 said:
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