I have a spugen 60mm (2.5") catback and an invidia test pipe (2.25").. I am considering the J's 70mm RR header back exhaust. THe j's 70RR FX "claims" 23hp dyno on bulletproof. Would the j's setup be a considerable upgrade over my current setup?

Thanks for the input,
-digs

 

Yes, it would be a good upgrade IMO, the J's 70mm is one of the best exhausts available

 

do you think the 70RR header back will be louder than spugen + test pipe?

 

maybe header back exhaust is usually slightly louder but i havent heard a spugen exhaust so i couldnt tell ya