my plan is to put a cutout after each collector for some open header sound. id probably only uncap it occassionally.

is this gonna **** with my o2 sensors and make the car dump lots of fuel into the motor?

 

i think as long as you have the cutouts placed a good foot or so after the O2 sensors, you wont have any problems.

 

how long is the average cutout? and how long is the part the exhaust comes out?

 

is this redundant with my no cats/open borla setup? will i actually notice a difference with the cutouts right at the collectors? i thought it would pick up some power and lots of sound right?

 

IMO, running exhaust sounds better than open headers. you probably wont pick up much if any over a 3" catback with no cats. if you ran duals with an equalizer of some sort you might pick up an extra 5-15hp.

 

i was mainly gonna do it for the sound occassionally. i truly believe that at the higher rpms, it would pick up a decent amount of power?

 

do you have a stock cam? if so the open header sound sounds loud, but not good. it would be a waste of money to me.

 

nope its a 383 motor

 

your knock sensor is what will mess with it by retarding timing. i programed mine out, i just have to listen for "pings" now

 

I think im just gonna stay with the open borla, should be plenty loud right?

Cutouts by the collectors would just be a pain most likely...

 

I have JetHot LT's with dual 3" FlowTech cutouts about 8" after the collector flanges. When in closed mode it runs through a custom 3" ypipe into the 3" open Borla. It sounds mean both modes but sounds like a NASCAR with open cutouts . But! with stock heads and cam you'll definitely lose some rwhp due to lack of backpressure, I lost 2/10ths in the 8'th mile and the same in my 60' times with the coutouts open. Again it sounds great and when you do a set of AFR heads and a beasty cam running open headers the backpressure is not an issue any longer....especially if you go ahead and do a stroker
oh yeah...this setup had no effect on the 02 sensors. It was a gamble I took with this setup knowing I'd probably lose backpressure but I knew the stroker was in it's future. My exhaust was setup with the future in mind therefore.

 

hmm. I do have a 383. maybe i will have to get some. any pics of where you put the cutout on the drivers side?

 

same place as my pass side cutout about 8" aft of the header collectors. It's a sweet setup. Now if I can get my miss/sputter/rich condition under control I'll be happy.

 

what is the length of the total cutout? gotta see if i have space for them. is it a big noticable difference in sound and power?

 

decided not to get them, ill just run the open borla for now. motor is going in the car sunday and i cant get em here till tuesday so just gonna skip it now.

Thanks for all the help!