[Camaro1973]

Btw here’s another green cat they pulled off. (Was on the car 1 month) 3rd set.

[Z OH 6]

Which part number are the new cats? 85230 3" inlet or 85240 4" inlet?

[Camaro1973]

Originally Posted by Z OH 6

Which part number are the new cats? 85230 3" inlet or 85240 4" inlet?

85230

[Z OH 6]

Originally Posted by Camaro1973

85230

Roger that, wasn't sure if you went with the larger inlet and just used a reducer or not. Curious to see how those hold up in time. Need an update in a few months if you don't mind pulling it apart to check it. I'm not buying new headers but I might just buy the cats and have them welded in to my Kooks connection pipes if they'll fit which they should since the Kooks green cats are probably the same inlet size but 4" outer diameter instead of the 4.5" outer diameter that you have.

[Camaro1973]

Originally Posted by Z OH 6

Roger that, wasn't sure if you went with the larger inlet and just used a reducer or not. Curious to see how those hold up in time. Need an update in a few months if you don't mind pulling it apart to check it. I'm not buying new headers but I might just buy the cats and have them welded in to my Kooks connection pipes if they'll fit which they should since the Kooks green cats are probably the same inlet size but 4" outer diameter instead of the 4.5" outer diameter that you have.

Yeah i think the 4" would of been unnecessary extra work to reduce it back to 3". Its 3" in/out with a 4.5" body. Looks like they changed the inside guts, and its also spun differently. I really do hope they hold up because i've spent alot of time/money on these stupid things.


I don't need to pull them apart, i just unscrew the front o2 sensor and run my endoscope camera down it. Takes a few minutes, much easier on my back in the garage then pulling it all apart


I think if your making 650-700 max I think the original Gen 1's might be safe BUT and this is a BUT the tune would need to be perfect and boost cant be crazy high or they'll def not last.


CSP did a very good job however, nice clean install, headers are very nice and the connections they had custom made are very clean as well. Just needed to weld it to my S pipes.

[Camaro1973]

Oh, in terms of power it made 786/730, in 86 degree weather today. It made 801 back in march when it was 61F. Heat sucks

[Z OH 6]

Originally Posted by Camaro1973

Oh, in terms of power it made 786/730, in 86 degree weather today. It made 801 back in march when it was 61F. Heat sucks

Well I'd say you probably didn't really lose any power, just the temps made a difference. The main thing is hopefully its more reliable now.

[Camaro1973]

Originally Posted by Z OH 6

Well I'd say you probably didn't really lose any power, just the temps made a difference. The main thing is hopefully its more reliable now.

Honestly it may make a bit more. With the kooks headers rubbing on the motor mount you have to desensitize the knock sensors so they don't report false knock. Now with the CSP headers, was able to turn the knock sensors to practically back to stock and add another degree of timing.


So well see when its 60 back outside, which looks like nowhere soon as today was 101.

[Cleancoupe]

Thanks for the pictures. They look like they fit great. I think I’m going to pull the trigger on a set now. Now I need to decide if I want to coat the headers or not.
Any particular reason why you are still running cats if you kept having a problem with them melting?
Also what’s the black tape for?

[Revalot]

Originally Posted by Camaro1973

Honestly it may make a bit more. With the kooks headers rubbing on the motor mount you have to desensitize the knock sensors so they don't report false knock. Now with the CSP headers, was able to turn the knock sensors to practically back to stock and add another degree of timing.


So well see when its 60 back outside, which looks like nowhere soon as today was 101.

Very interesting to know!

[Z OH 6]

Originally Posted by Camaro1973

Honestly it may make a bit more. With the kooks headers rubbing on the motor mount you have to desensitize the knock sensors so they don't report false knock. Now with the CSP headers, was able to turn the knock sensors to practically back to stock and add another degree of timing.


So well see when its 60 back outside, which looks like nowhere soon as today was 101.

My Kooks aren't touching my motor mounts. Did you have an early build set?

[Camaro1973]

Originally Posted by Z OH 6

My Kooks aren't touching my motor mounts. Did you have an early build set?

I meant they are extremely close and can cause false knock, hence why many desensitize the knock sensors, the CSP headers have much more clearance.

[radz28]

Dang good stuff right there.

[Camaro1973]

Originally Posted by Cleancoupe

Thanks for the pictures. They look like they fit great. I think I’m going to pull the trigger on a set now. Now I need to decide if I want to coat the headers or not.
Any particular reason why you are still running cats if you kept having a problem with them melting?
Also what’s the black tape for?

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.