Were can I get a highflow cat or testpipe for jdm headers?
New User
Joined: May 2001
Posts: 1,195
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From: MBNA America
Re: Were can I get a highflow cat or testpipe for jdm headers? (ITR1162)
Dave at SMS Products has CarSound cat for a good deal. He has all the hardware and gasket for all sorts of applications. I bought one from him for my JDM header and it worked out great. He even includeed new nuts/bolts for both ends of the cat.. His email is smsproducts@carolina.rr.com
Have Fun..!!
[Modified by TypeRP, 5:40 AM 7/18/2001]
Have Fun..!!
[Modified by TypeRP, 5:40 AM 7/18/2001]
Rather OG
Joined: Apr 2001
Posts: 8,179
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From: Greensboro, NC
Re: Were can I get a highflow cat or testpipe for jdm headers? (ITR1162)
I second that, TypeRP. Dave is great to work with in discussing mods to your exhaust system. I too purchased a carsound cat with 2.5" adapter to use with my Toda Header and everything worked out great. As far as pricing goes, check with Dave. His e-mail addy is smsproducts@carolina.rr.com. Good Luck! 
Trial User
Joined: Jan 2000
Posts: 1,011
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From: Austin, TX, USA
Re: Were can I get a highflow cat or testpipe for jdm headers? (Darth VadeR)
It's in the $180's for OBDII and a little less for OBDI
... includes gaskets for both ends also... Sorry Dave, I alwasys forget your pricing... 
... includes gaskets for both ends also... Sorry Dave, I alwasys forget your pricing...
's Dave's work.
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Junior Member
Joined: Jan 2001
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From: USA
Re: Were can I get a highflow cat or testpipe for jdm headers? (TypeRP)
Whats the difference between the carsound high cat 94006 and the 54006? Can anyone tell me this? And will both of them bolt up just fine to a spoon header? Responses appreciated.
Honda-Tech Member
Joined: Nov 2000
Posts: 5,135
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From: Fredericksburg, VA, USA
Re: Were can I get a highflow cat or testpipe for jdm headers? (R-Rated)
Thanks guys for all the positive comments.
The 54006 is rated up to an engine size of 5.0L while the 94006 is up to 5.9L. The 54006 is a 4" round cat with a body length of 9" and an overall of 13". The 94006 is an oval cat that measures 4" x 6-1/2" or 7" with a 12" long body with an overall length of 16". The longer body allows for a smoother transition from the inlet/outlet to the main body of the cat. Also, the 54006 is available up to a 2-1/2" inlet/outlet, while the 94006 is available up to 3", this by itself will tell you it flows better than the round 54006.
Due to the longer length of the 94006, the inlet needs to be shortened a bit to get the proper overall length to bolt in between a JDM header and the stock B pipe flange location. Just make sure that the proper floating flange is used on the inlet (bolt hole centerline of 4-3/4" for a JDM header or 3-5/8" for a Kami) so the spring bolts don't get cocked and you should be just fine.
The 54006 is rated up to an engine size of 5.0L while the 94006 is up to 5.9L. The 54006 is a 4" round cat with a body length of 9" and an overall of 13". The 94006 is an oval cat that measures 4" x 6-1/2" or 7" with a 12" long body with an overall length of 16". The longer body allows for a smoother transition from the inlet/outlet to the main body of the cat. Also, the 54006 is available up to a 2-1/2" inlet/outlet, while the 94006 is available up to 3", this by itself will tell you it flows better than the round 54006.
Due to the longer length of the 94006, the inlet needs to be shortened a bit to get the proper overall length to bolt in between a JDM header and the stock B pipe flange location. Just make sure that the proper floating flange is used on the inlet (bolt hole centerline of 4-3/4" for a JDM header or 3-5/8" for a Kami) so the spring bolts don't get cocked and you should be just fine.
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