hello everyone
have anyone try to modify stock header to 70mm collector to be the same diameter with test pipe and exhaust 70mm?
@Gernby
had give us dig different in 60 and 70 test pipe

 

seen a 60>70 TP,not sure make of it..

 

Its a Toda 394$

 

No, just buy one of the many 70mm test pipes, they are all 60 to 70mm, not just the Toda one.

 

i ask if i replace the collector of stock header .

 

Replace the whole header instead.

 

Yeah it seems like a lot of work for what will likely amount to very little difference overall.

 

Really? Not trying to be sarcastic either....I thought I would've had to settle on the Toda one for that taper, I kinda liked the idea of the transition....even if I was chasing probably < 1 hp.....

Know the other brands that do that? Maybe I'll call Berk and see if they'll do it for me.

 

There is no real taper on the Berk or any of the cheaper ones.

 

Yeah, I think I misunderstood what he meant. I might just need to go with the Toda.