3” dual exhaust

screaminfast

Sergeant
Feb 18, 2017
256
135
0
Rochester NY
mikecentola.com
Ride
07 SG/CR 335i / 17 X6 x35i
What would you guys like me to test? Currently getting MMP 1k our on. Have stock exhaust with no mufflers. Was about to custom make a 3.5” similar to the BMR one? I have local dynos that will let me test things back to back.
 
  • Like
Reactions: boostE92d

Rcboosted2007

Lieutenant
Jan 28, 2018
902
90
0
Parts unknown
Ride
07 335i
The case is that the stock exaust pipe size 2.25 is good enough for 6,7,8whp. Meaning zero flow loss/restrictions.So we are looking at same tune comparing the two with a new style 3.5, and a pull vs a run with open downpipes.looking for as much info as possible. Effect on spool time rpm,hp/trq,egt. So any csv would be awesome.....your the man
 
  • Like
Reactions: fmorelli

fmorelli

Lieutenant General
Staff member
Aug 11, 2017
3,748
3,592
0
57
Virginia
Ride
E89 Z4 35i, F10 535d
The case is that the stock exaust pipe size 2.25 is good enough for 6,7,8whp. Meaning zero flow loss/restrictions.So we are looking at same tune comparing the two with a new style 3.5, and a pull vs a run with open downpipes.looking for as much info as possible. Effect on spool time rpm,hp/trq,egt. So any csv would be awesome.....your the man
Gee ... can't we just go with hearsay lol ...

Filippo