Hey guys

I recently bought a downpipe but i got some issues
I bought the dual maxim works from rhdjapan which is really a piece of art

its a dual 54mm pipe and a 68mm tail pipe.
the tailpipe is just like the factory made one

i know that its not the biggest the better but in this case, im not sure by the time its the same as the factory made
it got me worried because all the rest i ve seen such as the greddy 80mm re-amemiya 80mm FEED 80mm hks 75mm and knight sports 76.8 mm are in fact bigger than this

what size midpipe-catback should i use?

thank you guys

let me know

con

 

most try to go for at least a three inches (76 mm). The dual is fine. 68mm is a little over 2.5 inches

 

you'll be fine.

 

with a smaller downpipe than the midpipe, i think it wont produce back-pressure