[Cleancoupe]

Originally Posted by Camaro1973

Hi, i'm running cats because i cant stand the smell of gas and IMO these cars with headers and no cats sound like crap. Loud, raspy just crappy. The old cats weren't actually melting, they were being bent inwards which is the most common problem with these cats.


The new ones are rated for 850hp per bank, so well see. As far as the black on the pipes, the tech put that on after they were welded. Why, im not exactly sure. Helps find a leak? He had some extra black paint? lol.


It burned completely off after 10 mins with no residue so i am assume it had something to do with the welding.

Yeah same reasons why I’m wanting to run cats myself. Oh I gotcha. That’s crazy. Hopefully these will do the trick for you.

That’s what I figured they were covering the welds.

Thanks for the replies

[FoundNemo]

Originally Posted by Camaro1973

Hi, i'm running cats because i cant stand the smell of gas and IMO these cars with headers and no cats sound like crap. Loud, raspy just crappy. The old cats weren't actually melting, they were being bent inwards which is the most common problem with these cats.


The new ones are rated for 850hp per bank, so well see. As far as the black on the pipes, the tech put that on after they were welded. Why, im not exactly sure. Helps find a leak? He had some extra black paint? lol.


It burned completely off after 10 mins with no residue so i am assume it had something to do with the welding.

Definitely need some exhaust sound clips! Looks fantastic

[Choda]

love it

[swisstyphoon]

Originally Posted by Camaro1973

Just picked her up today.

First impressions, sounds even better then before. Less pinging sound from headers, slightly even deeper tone also. Seems like the csp/stainless works might be made a bit thicker. Clearance is great around plugs, motor mount and steering shaft.

Here’s some pics.

Any questions just let me know.

Looking good!
Those are the same Gesi Cores I used. 85200 vs 85230 with in-, and outlets.
I will check how mine hold up in the stock location in a few weeks.

[arpad_m]

Originally Posted by Camaro1973

Just picked her up today.

First impressions, sounds even better then before. Less pinging sound from headers, slightly even deeper tone also. Seems like the csp/stainless works might be made a bit thicker. Clearance is great around plugs, motor mount and steering shaft.

Here’s some pics.

Any questions just let me know.

Congrats brother, it's a very clean install, plus you can now sleep better knowing your cats aren't about to collapse on you

[Camaro1973]

Originally Posted by arpad_m

Congrats brother, it's a very clean install, plus you can now sleep better knowing your cats aren't about to collapse on you

Hahaha... I don't have much faith in these cats TBH but well see... I really hope these new ones are made better.


Ill be scoping them soon to check

[FoundNemo]

Originally Posted by Camaro1973

Hahaha... I don't have much faith in these cats TBH but well see... I really hope these new ones are made better.


Ill be scoping them soon to check

Any chance of a startup and rev video? Would be great to hear the setup. I saw your old posts but the .MOV files are gone and cant be downloaded anymore. Cheers and thx!

[Camaro1973]

Originally Posted by FoundNemo

Any chance of a startup and rev video? Would be great to hear the setup. I saw your old posts but the .MOV files are gone and cant be downloaded anymore. Cheers and thx!

Sure ya. In middle of heatwave here so there’s no cold start… lol I literally started it this morning and intake temps were 101 and MAT was 117..

I’ll get some idle and revs and in car sound.

[FoundNemo]

Originally Posted by Camaro1973

Sure ya. In middle of heatwave here so there’s no cold start… lol I literally started it this morning and intake temps were 101 and MAT was 117..

I’ll get some idle and revs and in car sound.

Thx!

[FoundNemo]

Originally Posted by Camaro1973

Just picked her up today.

First impressions, sounds even better then before. Less pinging sound from headers, slightly even deeper tone also. Seems like the csp/stainless works might be made a bit thicker. Clearance is great around plugs, motor mount and steering shaft.

Here’s some pics.

Any questions just let me know.

Out of curiosity, where is the wideband you used when tuning? I dont see it in your pictures.

[Camaro1973]

Originally Posted by FoundNemo

Out of curiosity, where is the wideband you used when tuning? I dont see it in your pictures.

Screws into the front o2 sensor ports in the headers.

It’s not permanent if that’s what your asking.

[FoundNemo]

Originally Posted by Camaro1973

Screws into the front o2 sensor ports in the headers.

It’s not permanent if that’s what your asking.

Yea I guess I was confused, how did they tune it with a wideband without removing the narrow bands if there is only one port pre-cat in collectors on each side?

[Camaro1973]

Originally Posted by FoundNemo

Yea I guess I was confused, how did they tune it with a wideband without removing the narrow bands if there is only one port pre-cat in collectors on each side?

I’m no expert tuner by any means but here’s my take. Narrow band only contains info on whether it’s rich or lean. Wideband is just what it sounds like, can read very lean to very rich. This is what’s needed to tune properly as your getting the actual AFR and not just data from the narrow band which is a lean/rich condition.

[Joshinator99]

Originally Posted by Camaro1973

I’m no expert tuner by any means but here’s my take. Narrow band only contains info on whether it’s rich or lean. Wideband is just what it sounds like, can read very lean to very rich. This is what’s needed to tune properly as your getting the actual AFR and not just data from the narrow band which is a lean/rich condition.

Correct. Narrow band is only accurate at 14.7:1 whereas the wideband can go like 8:1 to 17:1 and be accurate the entire range. Since you’re probably in the 12:1 range at WOT, you need the wideband to know if you’re on target.