DP or High flow cat?
Not trying to be mean - but do a search....
Here's just a few threads exactly the same.
https://www.evolutionm.net/forums/sh...ad.php?t=78509
https://www.evolutionm.net/forums/sh...ad.php?t=78318
Here's just a few threads exactly the same.
https://www.evolutionm.net/forums/sh...ad.php?t=78509
https://www.evolutionm.net/forums/sh...ad.php?t=78318
If you can afford it I would get both. If your Perrin cat back is a 3inch and you go with the downpipe you would be going from bigger downpipe to small cat then to big cat back this can mess up the thermal dynamics. You can get a high flow cat from Ultimate Racing for only $150 in either a 2.5 or 3inch. I highly recommend this cat it is less expensive than the Random but it is still less than half the size of the stock one and no check engine light gauranteed. I have yet to get on either of my two Evo's that I have them on.
Also on a replacement downpipe remember you pay for what you get. I have seen a few that cost less but have had fitment problems.
Hope this helps best of luck.
Also on a replacement downpipe remember you pay for what you get. I have seen a few that cost less but have had fitment problems.
Hope this helps best of luck.
Last edited by MYEVOVIII; May 4, 2004 at 07:39 PM.