Yes, another Borla header thread.

[6speed_Sam]

Originally Posted by Boofneenee

why? whats wrong with running uncatted headers for the long run.. what will happen to the car?

thanks

I've had catless cars/trucks for years and put over 200k miles on one(current owner has over 260k) and 120k miles on another with no adverse effects what so ever. Other than the occasional smell and noise it wont harm a thing on the car. Just make sure it's tuned correctly.

[m.wood0213]

Originally Posted by Boofneenee

why? whats wrong with running uncatted headers for the long run.. what will happen to the car?

thanks

Originally Posted by 6speed_Sam

I've had catless cars/trucks for years and put over 200k miles on one(current owner has over 260k) and 120k miles on another with no adverse effects what so ever. Other than the occasional smell and noise it wont harm a thing on the car. Just make sure it's tuned correctly.

Reply

Originally Posted by regal

Its not conclusive that the "tune" method removes the DTC readiness flags, just cause the light is gone doesn't mean it will pass an ODBII port check by the DMV.

At this time the spacer is actually the proper way to deal with this issue if you want to pass OBDII emission checks.

Thanks.

Originally Posted by wootwoot

Correct. When they tune they usually just turn that code off, meaning the conditions are such that the light should be on, but the tune won't allow it. You would have to flash back to stock rom in order to pass an OBD test. And at that point you would need a spacer to keep the check engine light from failing you.... I think if you have a header you should have a tune. But it won't get you through emissions testing.

I have not tried any of the above. This is just what I have gathered from my time on the forums.

[jflogerzi]

Get a catted front pipe. That's my plan. not cat on the header and cat for the front pipe. Plus my perrin catback is resonated.

[6speed_Sam]

Originally Posted by m.wood0213

Reply

Ok....

I answered his question

[m.wood0213]

Now I have discovered a way to make this work for normal legal people who dont want a tune or CEL. Get a catless header and buy the AVO catted front pipe because it include an extra bung for a wideband, but you could use this for the o2 sensor. Total cost=(536+625)1161. Or another route with same/similar results and no splicing could be ~1200-1300 (catted header and either catted or less front pipe).

[uspspro]

or just weld a bung on to any catted front pipe (including stock).

[m.wood0213]

Originally Posted by uspspro

or just weld a bung on to any catted front pipe (including stock).

Yes that could also work. What would be the best way to plug the original o2 port. A bolt of some sort?

[uspspro]

Originally Posted by m.wood0213

Yes that could also work. What would be the best way to plug the original o2 port. A bolt of some sort?

Take your pick: http://www.summitracing.com/search/p...n-sensor-plugs

[m.wood0213]

Originally Posted by uspspro

Take your pick: http://www.summitracing.com/search/p...n-sensor-plugs

nice find. Thank you!