Guest haydon Posted March 5, 2014 Share Posted March 5, 2014 Will be buying my supra in October and planning a bpu on a tt auto j spec. With both pipes de cat turbos aee going to spin to quick. So what if I go with a 200cell cat. Will that be enough restriction? Or will it be to much to achieve bpu.. plus may not nees to swap out for mot emmisons Link to comment Share on other sites More sharing options...
drift_bear Posted March 5, 2014 Share Posted March 5, 2014 OR just go for the easy option and use a 1bar/1.2bar restrictor ring as for emissions, get a friendly mot tester Link to comment Share on other sites More sharing options...
Guest haydon Posted March 5, 2014 Share Posted March 5, 2014 There's that lol . Looking at a nice list of bits atm ... missus will be over the moon when/if she sees the prices haha .bored of my car.. October cant come quick enough Link to comment Share on other sites More sharing options...
TT Paul Posted March 5, 2014 Share Posted March 5, 2014 start looking for bits now you got the time to build it up Link to comment Share on other sites More sharing options...
Steve Paine Posted March 5, 2014 Share Posted March 5, 2014 Leave the first cat in. It will give you a much nicer sounding car both in and out of the cockpit! Put an HKS silent power exhaust at the tail end. You will not be unhappy with the result. My car was at its best IMO at this stage. Now it is a noisy beast waiting to bite you at the slightest lack of concentration. Still great fun though! Link to comment Share on other sites More sharing options...
drift_bear Posted March 5, 2014 Share Posted March 5, 2014 Nur spec R if you want to upset your neighbours like me Link to comment Share on other sites More sharing options...
Dim Sum Posted March 5, 2014 Share Posted March 5, 2014 HKS Super dragger with no cats are fine. Only sounds loud if you are flooring it, otherwise its quite Link to comment Share on other sites More sharing options...
Guest haydon Posted March 5, 2014 Share Posted March 5, 2014 Oh noise aint ain isue I currently run a catback with mid box delet and still want louder lol So second decat and catback on jspec will have enough restiction from turbo spinn ? Or will it still need a ring Link to comment Share on other sites More sharing options...
Angarak Posted March 5, 2014 Share Posted March 5, 2014 I find the car smoother to drive without any cats in and I get better mpg when taking it easy Link to comment Share on other sites More sharing options...
Steve Paine Posted March 5, 2014 Share Posted March 5, 2014 With the twins on you will need a restrictor ring. If not you will spike the turbos! Link to comment Share on other sites More sharing options...
Guest haydon Posted March 6, 2014 Share Posted March 6, 2014 How are the rings measuring? Guessing something that looks like a washer welded after the decat? To slow gasses down. But how big ? Sorry new to the " turbo" always had na Link to comment Share on other sites More sharing options...
ScottC Posted March 6, 2014 Share Posted March 6, 2014 Click bpu Link to comment Share on other sites More sharing options...
james_cbr Posted March 6, 2014 Share Posted March 6, 2014 hear you go http://www.garagewhifbitz.co.uk/index.php/garage-whifbitz-1068.html Link to comment Share on other sites More sharing options...
Calzo21 Posted March 6, 2014 Share Posted March 6, 2014 Iv just received the Stage 2 kit from Whifbitz along with the Greddy OLED Profec boost controller to take it to stage 3 Can't wait to get it fitted next week Link to comment Share on other sites More sharing options...
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