WiCkeDuDe
Member
Hey guys, new member here, trying to solve a problem with my 2001 accord ex 2.3 vtec. Hoping someone can help me out.
I have been getting horrible mileage for awhile now, less than 18 mpg, and haven't been able to solve the problem yet.
Ive gone through everything, replaced upstream o2 with genuine honda unit, injectors, map sensor, verified timing - right at 12 degrees at 700 rpm, throttle position sensor is fine, new ignition stuff. Fuel pressure is right on - 46 with regulator hooked up.
About the only thing I see a little weird is my downstream 02 sensor is a kick slow, but being downstream shouldnt hurt.
The only mods I have are the DC sports 4-2-1 header, injen cold air intake, and added an external ignition coild with MSD SCI ignition box.
Im wondered if any of you other guys have had issues with the dc sports header? What kind of mileage are you getting? Im wondering if moving the oxygen sensor down so close the the cat is screwing things up somehow. Sadly I sold my factory manifold and pipe so I cant test this theory.
Any ideas are appreciated!
I have been getting horrible mileage for awhile now, less than 18 mpg, and haven't been able to solve the problem yet.
Ive gone through everything, replaced upstream o2 with genuine honda unit, injectors, map sensor, verified timing - right at 12 degrees at 700 rpm, throttle position sensor is fine, new ignition stuff. Fuel pressure is right on - 46 with regulator hooked up.
About the only thing I see a little weird is my downstream 02 sensor is a kick slow, but being downstream shouldnt hurt.
The only mods I have are the DC sports 4-2-1 header, injen cold air intake, and added an external ignition coild with MSD SCI ignition box.
Im wondered if any of you other guys have had issues with the dc sports header? What kind of mileage are you getting? Im wondering if moving the oxygen sensor down so close the the cat is screwing things up somehow. Sadly I sold my factory manifold and pipe so I cant test this theory.
Any ideas are appreciated!
Last edited: