SteveW Posted February 19, 2016 Share Posted February 19, 2016 Hi Mark, Just a quick one....famous last words. I had my DE350Z uprevved a good number of yeas ago now, about 5. I'm planning on changing from stock cats to decats due to the car becoming a weekend driver and a rattling broken heat shield. I know to get the best of them it would need to be remapped but if I chose not to go for the remap will it pose a problem having increased exhaust flow? I can understand how going the other way, decats to stock cats, would need a remap but will it be safe the other way? Thanks Steve Quote Link to comment Share on other sites More sharing options...
davey_83 Posted February 19, 2016 Share Posted February 19, 2016 would ultimately need aanother tweak to get rid of the eml as a result of fitting decats Quote Link to comment Share on other sites More sharing options...
SteveW Posted February 19, 2016 Author Share Posted February 19, 2016 Thank you but I had the EML driven by O2 sensor switched off at the last UpRev so shouldn't be an issue.....shouldn't lol Quote Link to comment Share on other sites More sharing options...
Mark@Abbey m/s Posted February 19, 2016 Share Posted February 19, 2016 I would remap 100% as the car would of been leaned off when tuning 1st time with the stock cats fitted. Removing the cats will lean the motor out even more. Will only take a couple of hours on the dyno to tweak the fuelling/ignition and tweaking the cams to get the best from fitting the de-cats 1 Quote Link to comment Share on other sites More sharing options...
SteveW Posted February 19, 2016 Author Share Posted February 19, 2016 Thanks Mark appreciate the feedback. I'll get it tweaked when I get round to fitting them. Thanks again Quote Link to comment Share on other sites More sharing options...
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