Mason Posted August 18, 2015 Share Posted August 18, 2015 Sorry to post this gents just a little confused, did some searching and I know that the second decat from a turbo would fit an NA, I've looked on eBay and it's mostly all 1st decat...but some ads are 1st decat and downpipe...like this one... http://www.ebay.co.uk/itm/TOYOTA-SUPRA-MK4-JZA80-92-02-STAINLESS-STEEL-EXHAUST-DOWNPIPE-1ST-DECAT-PIPE-/181107598561?fits=Model%3ASupra&hash=item2a2adaa4e1 I'm far from mechanically minded so is the downpipe in this ad considered the 2nd decat? Quote Link to comment Share on other sites More sharing options...
ripped_fear Posted August 18, 2015 Share Posted August 18, 2015 No thats for a turbo only, I have a spare NA one sat at home if your interested its a 2.5" wifbitz one. I also have a tubular manifold that would delete the first cat too, but would require a custom longer second decat. Quote Link to comment Share on other sites More sharing options...
Mason Posted August 18, 2015 Author Share Posted August 18, 2015 Interested in the 2nd cat yea, not so much the manifold as that will be replaced end of the year for NA-T...also wondering if both decats would be a bit much for an NA Quote Link to comment Share on other sites More sharing options...
ripped_fear Posted August 18, 2015 Share Posted August 18, 2015 Both decats made a nice difference on mine and not overly loud with my choice of exhaust. The wifbitz one does have a weird noise which resonates sounds almost turbo esque on wot. Pm me an offer. I can check my pms to see how much I paid for it a few months back. Quote Link to comment Share on other sites More sharing options...
Style Posted August 18, 2015 Share Posted August 18, 2015 Double decatting an NA is stupidly loud apparently. They're louder than TT's so it would be about as loud as you could possibly get with a supra provided you have a loud cat back. NA-T replaces all cats so why not wait until then and do it all at once? Quote Link to comment Share on other sites More sharing options...
Mason Posted August 18, 2015 Author Share Posted August 18, 2015 Well I thought decats were one of the things you had to get whilst working towards NA-T, I've got a 3" cat back at the moment and was next to a Skyline in the tunnels the other week and couldn't hear mine...which is the reasoning behind my impatience lol Quote Link to comment Share on other sites More sharing options...
ripped_fear Posted August 18, 2015 Share Posted August 18, 2015 Double decatting an NA is stupidly loud apparently. They're louder than TT's so it would be about as loud as you could possibly get with a supra provided you have a loud cat back. NA-T replaces all cats so why not wait until then and do it all at once? That's not always the case. My na has no cats now and is near stock on tick over. It is the quietest exhaust on the market though. It depends what combination you go for. Quote Link to comment Share on other sites More sharing options...
Shane Posted August 18, 2015 Share Posted August 18, 2015 My wife's NA was double decat with the usual 3" single box Ebay type of exhaust fitted and was imo too loud. I had the second cat from my TT laying around so stuck that in and its ok now, still loud but you can live with it. Quote Link to comment Share on other sites More sharing options...
Mason Posted August 18, 2015 Author Share Posted August 18, 2015 So one cat isn't so bad then? may give it a go and wait until it goes NA-T for the rest Quote Link to comment Share on other sites More sharing options...
martincoupe Posted August 18, 2015 Share Posted August 18, 2015 get the angle grinder out cut it out and weld in a new bit of pipe job done and for under £50 Quote Link to comment Share on other sites More sharing options...
SupraP-Z Posted August 19, 2015 Share Posted August 19, 2015 My N/A is Double decat with a Motoria exhaust, sounds a little raspy but pops and burbles. Also louder than you'd think it would be, ive had rev off's (thank god no racing haha) with AMG's and Lambos etc, and at times i drowned out their sound. It can get droney on the motorway, but if you drive sensibly its not all that bad. Just do it bud, if you dont like it revert it - simple as Quote Link to comment Share on other sites More sharing options...
james_cbr Posted August 19, 2015 Share Posted August 19, 2015 I have hks 3 inch system and 3 inch second cat decat mines nice not to loud Quote Link to comment Share on other sites More sharing options...
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