Re: Cat for 5kTQ

["Graydon D. Stuckey" <graydon@apollo.gmi.edu>]

On Wed, 16 Jul 1997, L. Scott Oliver wrote:

> That rattling noise I've been hearing the last few days is my cat breaking
> up :(.  GPR has aftermarket replacements for $190--anybody used one? 
> What if I want to go above 2.0 bar--is the stock cat too restrictive?  What
> cat have those of you who replaced the exhaust with bigger piping
> used?

I have used the high flow cats from JC Whitney on other cars with good
results.  They seem to be fairly free-flowing, although I haven't actually
done any testing to confirm this.  I don't use cats on my own cars.  If
you have a good welder who can install this cat, the JCW piece is good
value for the money.  It doesn't have any flanges on it - just tubes on
each end.  You have to weld it or clamp it into your car.  The 2.5" cat is
about 85 bucks.  The 3" cat is about 100 if you get their sales catalogue. 

	What you really need is a 3" exhaust system though - that will 
really wake up the 5KCSTQ.  :-)   It will also wake up your pocket book 
though!  :-(

Later,
Graydon D. Stuckey 
'89 Thunderbird SuperCoupe
'86 Audi 5000 CS Quattro
'86 Mazda RX7 GXL 2+2
'85 Mazda RX7 GS