Marc '99T/A

iTrader: (22)

I have an exhaust leak where my header collector hooks up to the exhaust. How bad would this affect the car?

staringback05

iTrader: (8)

it depends on how close the leak is to the o2.....id say from experience within 12" of the o2, it will effect your car and cause it to run rich...

Marc '99T/A

iTrader: (22)

Yeah, its pretty close to the O2 sensor; but I'm trying to figure out how bad that might be affecting the car.

Z28LS1camaroguy

iTrader: (3)

it will hurt your gas mileage and take away some horsepower, how do i know bc mine is leaking and its right where the header and Y pipe meet. Hopefully getting custom true duals made by my friend who makes them fit great, will help.

zeekracing

iTrader: (5)

I've had open headers on my car for about a week and it is running bad rich.

LS699TA

oxygen getting in your exhaust before your o2's will make the computer think its lean causing a million problems, go get a muffler shop to patch it, i have to get my slp lt's patched about once every 5 months....

jrfango8

i got the slp lt setup. leaks like sith, maybe that why the engine light is on. oh well i dont care, it runs hard

andrew69_04

iTrader: (148)

i have a small leak on my collector too. it seems to run fine but my mpg really took it in the shorts.

DJ_951

mess up the O2 sensors, lean could be really bad. Also if you get a tune with a leak then fix the leak you will need another tune. I fought with the exhaust a whole evening to stop it leaking just before the mufffler. Once fixed you should be good forever with stainless steel.

Tzion_ben_Arthur

iTrader: (19)

I have slip fit, sucking air at high exhaust velocities, running open loop speed den, noticed wide band started indicating 16.5 to 1, from 13.1 to one. Same injector DS, same VE, same MPH, same 1/4.

Grim.