ManwithSupra Posted June 20, 2011 Share Posted June 20, 2011 If you wanted to run higher boost with the first cat in place you can safely do this with an EBC right? I ask as i wondered about high EGT's etc. Link to comment Share on other sites More sharing options...
ManwithSupra Posted June 20, 2011 Author Share Posted June 20, 2011 Anyone? Link to comment Share on other sites More sharing options...
Thorin Posted June 21, 2011 Share Posted June 21, 2011 I wouldn't personally, second cat yes, first no. It might be OK if you're only going to 1.0 bar, but temperatures are going to get toasty. Link to comment Share on other sites More sharing options...
ManwithSupra Posted June 21, 2011 Author Share Posted June 21, 2011 (edited) As i thought, thanks for your reply mate Just Going on from this, as people know EGT's are always a problem when your bringing up power (with a Cat or not) so how do you control EGT's effectively? Edited June 21, 2011 by ManwithSupra (see edit history) Link to comment Share on other sites More sharing options...
merckx Posted June 21, 2011 Share Posted June 21, 2011 Most people who want to leave a cat on the car remove the first one as it's more restrictive than the second. Link to comment Share on other sites More sharing options...
Nic Posted June 21, 2011 Share Posted June 21, 2011 As said the 1st cat is the most restrictive of the 2, running 1.2bar with the 1st cat in place will generate potentially dangerously high exhaust temps. For the best results I'd remove both, if you want to leave one cat in place just remove the first one and leave the 2nd one fitted. I'd also fit an EGT gauge so you can monitor temps. Link to comment Share on other sites More sharing options...
Nic Posted June 21, 2011 Share Posted June 21, 2011 Just Going on from this, as people know EGT's are always a problem when your bringing up power (with a Cat or not) so how do you control EGT's effectively? EGT's are not usually a problem with both cats removed, with the restriction of the 1st cat in the exhaust the temps could go dangerously high running higher than stock boost. The only way to keep the EGT's down with the cats in place is to not raise the boost level. Link to comment Share on other sites More sharing options...
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