Kitt Posted July 20, 2004 Share Posted July 20, 2004 I have a RSR waiting for delivery from Paul E and I was also thinking of getting the decat pipes for my J-Spec NA. If I were only to replace 1 CAT which would be the best in terms of performance, or would it make no difference as there's still 1 CAT left restricting the power ? Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 20, 2004 Share Posted July 20, 2004 On an N/A it's pointless just removing one cat, you NEED to get rid of both, and even then the power gain is modest compared to a similar conversion on a twin turbo. Just being honest, and I sell N/A pipes... There is still a worthwhile power gain, especially with a none restrictive exhaust behind them. DON'T change the air box though, that is a sure way to drop power on the N/A Link to comment Share on other sites More sharing options...
Suprash Posted July 20, 2004 Share Posted July 20, 2004 Originally posted by Chris Wilson DON'T change the air box though, that is a sure way to drop power on the N/A We're find out Chris on the 22nd. Im doing a dyno run with a standard air box and a induction pipe to see if there is any difference...... Link to comment Share on other sites More sharing options...
SupraStar 3000 Posted July 20, 2004 Share Posted July 20, 2004 Originally posted by Ashley Willis We're find out Chris on the 22nd. Im doing a dyno run with a standard air box and a induction pipe to see if there is any difference...... Interested to hear the result of that test. What type of induction kit will you use, and is that on a N/A car I did consider an Apexi induction kit but opted for an Apexi standard filter element in the end. Link to comment Share on other sites More sharing options...
Suprash Posted July 20, 2004 Share Posted July 20, 2004 Its on a NA and will be testing the standard air box against one of these http://www.mkivsupra.net/vbb/showthread.php?s=&threadid=23512 Link to comment Share on other sites More sharing options...
Jive Posted July 21, 2004 Share Posted July 21, 2004 Ashley Make sure you post up your result, still very interested in that pipe you've got Link to comment Share on other sites More sharing options...
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