Where would I find a good hi-flow cat that will fit on a stock 89 RS?

 

donno the part# but catco makes good high flow cats for our cars, try summit

 

I looked at summit before and found:

http://store.summitracing.com/partde...4&autoview=sku

and

http://store.summitracing.com/partde...4&autoview=sku

I'm pretty sure the second one is the type that will fit my RS, because it does not have a 3" exhaust, but I didn't see anywhre that it was a hi-flow.

 

There's a guy on ebay selling hi-flow cats for around $50 all day long. Check it out.

 

What would the inlet/outlet be for a stock RS. I think is should be 2.25", but I want to double check.

 

The only way you'll know what you definietly need is if you crawl under the car and check.

 

Don't worry about if it is high flow or not. A catco cat is better than stock but you are still plagued with the tiny 2.25" piping. A high flow cat won't make any difference when the exahust is undersized as dramaticaly as stock TBI cars come with.

 

That makes sense, but I just wanted to make sure that the 2.25" dia. was the right inlet/outlet size for the cat.

 

CarSound... they are made very well.