Neumann Posted June 7, 2014 Share Posted June 7, 2014 hello. as im in the currently in the progress of going bpu+ i need to find something that replaces my stock downpipe. ive found a downpipe with a 100 cell race cat built in that is bolt on. does anybody tried it out and can compare it to no cat at all, am i going to feel any difference? its important for me to be able to pass emission testing. thats why i dont just by an ordinary downpipe. http://shop.j-spec.se/sv/artiklar/torque-rostfri-downpipe-25-supra-jp-spec-1993-1998.html Quote Link to comment Share on other sites More sharing options...
mark newman Posted June 7, 2014 Share Posted June 7, 2014 bpu with a cat . No Quote Link to comment Share on other sites More sharing options...
Benjy Posted June 7, 2014 Share Posted June 7, 2014 bpu with a cat . No This. Quote Link to comment Share on other sites More sharing options...
Neumann Posted June 7, 2014 Author Share Posted June 7, 2014 ok guys seems like a bad idea, i will put on a cat each year for emission then. so will a 63mm (2,5") dp be sufficent or should i try to find a 3"? Quote Link to comment Share on other sites More sharing options...
walkerstrider Posted June 7, 2014 Share Posted June 7, 2014 MOT'd my 94 n/a yesterday which apparently doesnt have to have a cat test. Quote Link to comment Share on other sites More sharing options...
Neumann Posted June 7, 2014 Author Share Posted June 7, 2014 MOT'd my 94 n/a yesterday which apparently doesnt have to have a cat test. lucky you. but here in sweden it needs one. Quote Link to comment Share on other sites More sharing options...
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