longtubes passing emissions

[mydangstang]

Searched but didn't find. Would like any owners of longtubes in Northern Va. area that recently passed their emmissions to chimein and explain what they went through to get passed.

Thanks / just need to know if it's gonna be worth it for a dd or not.

 

[Royski]

If your worried about setting a CEL for cat inefficiency, you can use the spark plug bung trick.

 

[lundis]

im going to hopefully be installing the "spark plug bung trick" tomorrow...ill try to remember to post up if it works. i have kooks LT's with a kooks hi-flow catted H-pipe

 

[racevert]

so if you have a catted H-pipe why not just turn on the rear O2 sensors?

 

[Royski]

so if you have a catted H-pipe why not just turn on the rear O2 sensors?

The cats flow so well that it will still trip a CEL, especially on 07+ s197's.

 

[mydangstang]

Wow, at least it sounds like the orig parts might need to go back on with stock tune to insure passing. Oh well that's what I was afraid off.

 

[mydangstang]

im going to hopefully be installing the "spark plug bung trick" tomorrow...ill try to remember to post up if it works. i have kooks LT's with a kooks hi-flow catted H-pipe

good luck, hope to see a post saying "success"

 

[stang910]

I'm using Kooks LT's and catted X and pass OBDII inspection. All I do is load the Ford Whipple tune in my car and drive a for a day. No tricks to the O2's were needed.

 

[texas_outlaw]

The cats flow so well that it will still trip a CEL, especially on 07+ s197's.

Not necessarily. Long tube headers require a tune to adjust the O2 signal sent to the computer to avoid those CELs. I have Kooks long tubes with a catted x-pipe (other mods in sig) and have no CEL lights. The car passed OBDII inspection in Harris County, Texas (California of the South) running my tune from TPS with no problems.

When I bought my tunes, all three tuners (TPS, Brenspeed, and BBR) asked if I needed the tune to pass emissions. Tell your tuner to turn on the rear O2s and write an emissions-friendly tune. Problem solved.

 

[terry5357]

Not necessarily. Long tube headers require a tune to adjust the O2 signal sent to the computer to avoid those CELs. I have Kooks long tubes with a catted x-pipe (other mods in sig) and have no CEL lights. The car passed OBDII inspection in Harris County, Texas (California of the South) running my tune from TPS with no problems.

When I bought my tunes, all three tuners (TPS, Brenspeed, and BBR) asked if I needed the tune to pass emissions. Tell your tuner to turn on the rear O2s and write an emissions-friendly tune. Problem solved.

Ditto on the TPS tune, somehow Wes doesn't need to turn the rear O2's off to make his tunes run great.......

 

[mydangstang]

Not necessarily. Long tube headers require a tune to adjust the O2 signal sent to the computer to avoid those CELs. I have Kooks long tubes with a catted x-pipe (other mods in sig) and have no CEL lights. The car passed OBDII inspection in Harris County, Texas (California of the South) running my tune from TPS with no problems.

When I bought my tunes, all three tuners (TPS, Brenspeed, and BBR) asked if I needed the tune to pass emissions. Tell your tuner to turn on the rear O2s and write an emissions-friendly tune. Problem solved.

Thanks, I read on one or 2 forums about having problems with those header tunes every now and again they wouldn't fix the 02 problem good enough but I guess that's just what we gotta deal with.. Also I guess there;s no diff in Texas And Va.

 

[TexasKyle]

Not necessarily. Long tube headers require a tune to adjust the O2 signal sent to the computer to avoid those CELs. I have Kooks long tubes with a catted x-pipe (other mods in sig) and have no CEL lights. The car passed OBDII inspection in Harris County, Texas (California of the South) running my tune from TPS with no problems.

When I bought my tunes, all three tuners (TPS, Brenspeed, and BBR) asked if I needed the tune to pass emissions. Tell your tuner to turn on the rear O2s and write an emissions-friendly tune. Problem solved.

Thanks for this. I am about to put LT's and catted H on and was curious how things would go at inspection time. Now, if I can get Wes to gimme a tune...woot.

 

[Royski]

Not necessarily. Long tube headers require a tune to adjust the O2 signal sent to the computer to avoid those CELs. I have Kooks long tubes with a catted x-pipe (other mods in sig) and have no CEL lights. The car passed OBDII inspection in Harris County, Texas (California of the South) running my tune from TPS with no problems.

When I bought my tunes, all three tuners (TPS, Brenspeed, and BBR) asked if I needed the tune to pass emissions. Tell your tuner to turn on the rear O2s and write an emissions-friendly tune. Problem solved.

Interesting. I knew it was possible with the 05-06 cars, but I had heard that in 07 Ford changed a few things that made it more difficult to do. My tuner who I consider one of the better ones around says he can't figure out how to keep the rear O2's on and not throw a cat inefficiency code.

 

[07 Boss]

Interesting. I knew it was possible with the 05-06 cars, but I had heard that in 07 Ford changed a few things that made it more difficult to do. My tuner who I consider one of the better ones around says he can't figure out how to keep the rear O2's on and not throw a cat inefficiency code.

I have tuner guy that got me past the OBDII inspection with NO REAR CATS even intalled in the car. He said it was a 50-50 shot if it would work and it did. Can't give him up, nor would he tell me how he did it, but I'm just sayin' it can be done.

 

[Royski]

I have tuner guy that got me past the OBDII inspection with NO REAR CATS even intalled in the car. He said it was a 50-50 shot if it would work and it did. Can't give him up, nor would he tell me how he did it, but I'm just sayin' it can be done.

I've seen cars pass so I know its done, just wish my tuner knew the trick. What gets me is that he is amazing with sct software and knows his stuff really well.

 

[07 Boss]

I've seen cars pass so I know its done, just wish my tuner knew the trick. What gets me is that he is amazing with sct software and knows his stuff really well.

I recently switched to SCT/BBR tune, from the Diablo, but keep my Predator because it has the special tune in it.