Bmwmike

I am going to be putting on a set of American racing catless headers on my car. I was wondering if any one has used the spacers rather than doing a tune. I have used these spacers on Many different cars and got no check engine light. They have 2 types. I posted a link with both types.


http://www.esetuning.com/milltek-o2-...hoCu04QAvD_BwE


https://frsport.com/CEL-Fix---Check-...RoCl1oQAvD_BwE

mittens

Interesting, I mean its worth a shot, but I have no need I just delete the rears in the tune on everything I own anyway.

RussM05

There is not a lot of space around the O2 sensor bung. Good luck.

mittens

there is not alot of room but these would point the 02, parralel with hte tubes, So i would think you could make them work

lakemg

The milltek site describes it being effective with a high flow cats. Since you're going catless, I question how well it will work for your setup.

The other frsport unit pretty much had no information describing how it functions so either might be a gamble...

I was in a similar boat and ended up going with Kooks LTs + kooks green cats. No tune and no CEL, but I think the key is to also run a stock air intake/filter which I am doing. Others running the same exhaust as me with an aftermarket CAI did experience a CEL. ARH might now also offer the green cats too. Just throwing it out there as an option for you.