Ronnie Abene

iTrader: (13)

How long do your collectors have to be so you don,t screw up the oxegen sensors while running open headers??

Pntbll309

iTrader: (33)

I dont think you will mess them up, they will just pull incorrect readings.I did mine with just the y pipes and did not like it!

94z28L

iTrader: (4)

mine ran just fine on the dyno as far as a/f goes with headers dumped off the y-pipe

dhdenney

iTrader: (53)

You mean cutout after the Y?

Tireburnin

iTrader: (42)

When the pcm goes into VE (WOT) it doesn't care what the O2s say. They are for part throttle as far as I know.

dhdenney

iTrader: (53)

I think the problem you see with driveablilty with O2s and open headers is the fact that the sensor is so close to the open air that it tends to pick up the oxygen there and gives false readings. A cutout at the Y pipe would solve that problem. Cutout after the headers wouldn't be a big deal in a track situation since they are bypassed at WOT as mentioned.

Dave J

iTrader: (2)

I run this race muffler welded right to the collectors on my Kook long tube headers and I have no problems

http://vibrantperformance.com/catalo...72bdcf414a8f7a

Transamman25

iTrader: (1)

Id love a sound clip of your car with those muffs !!

Dave J

iTrader: (2)

I can get you one on the weekend but I will tell you it is far too loud for the street.
I dont really know how much they muffle the sound but I just use them because the race class I run in requires mufflers

94z28L

iTrader: (4)

no, just y-pipe, cats and cat back removed