what would be the best size of exhaust for a gm s/c eco cause i read 2 1/4 is fine but the i read its too restrictive so whats best?
i went 2.5" from my rk 4-2-1 header back and it was amazing... loved it...
The First Twin Charged jbody
blue car (R.I.P) - 240whp @7psi..
silver car - 305whp 315lbs.tq @15psi (91 Octane) or 420whp & 425lbs.TQ @20psi (94 octane+Alcohol Injection)
All dynos run on a Mustang dyno
also i for got to say that was also on my 2.4L GM s/c'er but same idea
The First Twin Charged jbody
blue car (R.I.P) - 240whp @7psi..
silver car - 305whp 315lbs.tq @15psi (91 Octane) or 420whp & 425lbs.TQ @20psi (94 octane+Alcohol Injection)
All dynos run on a Mustang dyno
Agreed. 2.5" header-back. High flow car, straight thru resonator and muffler.
_________________________________________
450WHP Turbo Ecotec swap in the works...
^^^That's supposed to say High flow
cat
_________________________________________
450WHP Turbo Ecotec swap in the works...
