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I installed my prochamber with Pypes high-flow cats today. I am very pleased with the sound. It's not terribly loud, but has a deep, aggressive, raw tone. At idle, it's only slightly louder than stock, but when I accelerate, it has a nice deep thumping exhaust note.
I cut off about 9" of the downpipes and spliced in the cats. My O2 sensors barely reach the bungs on the rear of the cats, but they should be ok. I used some aluminum wire to fasten them to the sides of the transmission. The cats came with plugs for the O2 bungs, so I used those to plug the two bungs on the downpipes. The only real problem I had was that one of the band clamps Pypes sent me was missing the curved washer where the nut goes. I'll get a new one sometime and fix it, but for now, it's holding without it.
Here is the offroad prochamber before modification.
05 GT Prem,5spd,JLT2 w/Bama race, 4.10s, Steeda UDPs, Street Scene Gen 1 bodykit, Eibach prokit springs, hoodpins, Hurst shifter,O/R-H, various other appearance mods, Boomtube Crew Exhaust Clip
I don't know what the deal was with my camera, but it just didn't pick up sound like it did in the first video. I think there was a slight breeze that distorted it. It is actually not as quiet as the vid makes it out to be. There is still some drone, but the tone of the drone is different.....more of a rumbling now instead of a humming. I love the sound it makes when I get close to 3000rpm in 3rd gear.
Glad you got it installed. They sound good. Did you notice the "VRRRR" noise around 1K rpm? Maybe not since you have cats. I wonder if it's something unique to going "off road" with the prochamber. Since I have boomtubes with the o/r prochamber I notice some trumpeting when I'm really punching it. I didn't have the trumpeting when I had just the boomtubes with stock H-pipe & cats. Maybe the trumpeting is caused by the increased flow in the exhaust with the off road pipes. Hmmm...I wonder if adding resonators would eliminate the trumpeting.
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3.55 gears, MAC Boomtubes, O/R Prochamber, Dynomax Race Bullets(resonators)>>Sound Clip, Tein H. Tech lowering springs, J&M LCA relocation brackets, Spohn adjustable panhard bar, Meter4it tail lights (chase mode), CCFL halo fog lights, 6000K HID headlights & fogs, Clear corners & side markers, Shelby 1/4 window covers in black, "Switchback" LED turn signals, 20x8.5/20x10 Tork Icon wheels, Toyo Proxes 4 in 245/35-20 & 295/30-20
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Prochamber, Stingers, Pypes cats.....INSTALLED
