Hi Flow Cats?
Thread Starter
Burning Brakes
Joined: Jan 2005
Posts: 1,170
Likes: 0
From: Littleton CO
St. Jude Donor '07
Hi Flow Cats?
Not too long ago I put in a cat back 3" B&B Tri flow exhaust system on my 96/LT4. I know many complained about the noise of B&B, but mine is considerably quite in my opinion. I can hear it on the inside a little, but others at the track have commented on how quite my car is.
I still have the stock cats and have been seeing a lot about Random Tech Hi flow cats. The stock cats are fairly huge from the looks, but with 100K miles on them... The engine is otherwise stock for the most part.
Would high flow cats be a noticable benefit? Or perhaps with the age & mileage its time to replace them any way?
I still have the stock cats and have been seeing a lot about Random Tech Hi flow cats. The stock cats are fairly huge from the looks, but with 100K miles on them... The engine is otherwise stock for the most part.
Would high flow cats be a noticable benefit? Or perhaps with the age & mileage its time to replace them any way?
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Originally Posted by qwik96GS
Not too long ago I put in a cat back 3" B&B Tri flow exhaust system on my 96/LT4. I know many complained about the noise of B&B, but mine is considerably quite in my opinion. I can hear it on the inside a little, but others at the track have commented on how quite my car is.
I still have the stock cats and have been seeing a lot about Random Tech Hi flow cats. The stock cats are fairly huge from the looks, but with 100K miles on them... The engine is otherwise stock for the most part.
Would high flow cats be a noticable benefit? Or perhaps with the age & mileage its time to replace them any way?
I still have the stock cats and have been seeing a lot about Random Tech Hi flow cats. The stock cats are fairly huge from the looks, but with 100K miles on them... The engine is otherwise stock for the most part.
Would high flow cats be a noticable benefit? Or perhaps with the age & mileage its time to replace them any way?
Random Tech makes a direct bolt in replacement for your stock cats. they are however expensive. Another choice would be to install a nice set of EM long tube headers and a set of 3" Dynatech Headers Metal Cats just after the headers. These flow in excess of 500 CFM and there would be an appreciable gain in power with the headers and the CATs.
Thread Starter
Burning Brakes
Joined: Jan 2005
Posts: 1,170
Likes: 0
From: Littleton CO
St. Jude Donor '07
Can't go with headers because of the class I run in Auto-x. Would love too though, but not ready to just into a whole different class that would require a lot more mods to be competative.
Instructor
Joined: Aug 2005
Posts: 206
Likes: 1
From: Milwaukee WI
Can't go with headers because of the class I run in Auto-x.
13.10.E...Replacement catalytic converters must be OE if the vehicle has not exceeded the five-year/50,000 mile warranty period as mandated by the EPA. Converters must be of the same type and size and used in the same location as the original equipment converter(s). This does not allow for a high performance unit. If the vehicle has exceeded the five-year/50,000 mile warranty period, replacement catalytic converters must be OE-type as per Section 13.
Jeff
