julianhaami wrote:I got a couple of mufflers put on my 3.0RB Auto, they sound great but i notice a backflow type sound when the gears change under high acceleration.
Could it be breathing too much?
The system other than the mufflers are stock.
What could I do to prevent it?
Any suggestions on wether or not to keep the resonator or remove it?
julianhaami wrote:I got a couple of mufflers put on my 3.0RB Auto, they sound great but i notice a backflow type sound when the gears change under high acceleration.
Could it be breathing too much?
The system other than the mufflers are stock.
What could I do to prevent it?
Any suggestions on wether or not to keep the resonator or remove it?
Egg wrote:julianhaami wrote:I got a couple of mufflers put on my 3.0RB Auto, they sound great but i notice a backflow type sound when the gears change under high acceleration.
Could it be breathing too much?
The system other than the mufflers are stock.
What could I do to prevent it?
Any suggestions on wether or not to keep the resonator or remove it?
My Sti Genomes do it loud as well... but I love the sound, I call it the burp/fart.
J0HNATH0N wrote:Can anyone confirm that there should be no CEL for modifying cat back? Ie if a new centre and y pipe was installed or a 3rd cat delete...
coyote wrote:Sure, a GTR is fast ... but it's about as interesting as listening to grass grow.
Robbks wrote:J0HNATH0N wrote:Can anyone confirm that there should be no CEL for modifying cat back? Ie if a new centre and y pipe was installed or a 3rd cat delete...
that's correct, if your standard cats and o2 sensors remain in their stock locations, they're fine.
my car also pops between changes on high throttle applications
it's a stupid emissions thing whereby the injectors keep pumping in fuel even with the throttle closed.
older models would completely shut off the injectors over 1500 rpm and 0% throttle (saves fuel but creates nasty emissions)
J0HNATH0N wrote:Robbks wrote:J0HNATH0N wrote:Can anyone confirm that there should be no CEL for modifying cat back? Ie if a new centre and y pipe was installed or a 3rd cat delete...
that's correct, if your standard cats and o2 sensors remain in their stock locations, they're fine.
my car also pops between changes on high throttle applications
it's a stupid emissions thing whereby the injectors keep pumping in fuel even with the throttle closed.
older models would completely shut off the injectors over 1500 rpm and 0% throttle (saves fuel but creates nasty emissions)
So in theory, if I was to get the y pipe after cats cut out and replaced with a twin inlet twin outlet muffler and ran that to a set of ultrex quads I won't need a tune? Won't touch headers or cats until I do sc kit.....
J0HNATH0N wrote:Do you think a 2.25" h6 xforce center and y pipe will handle a sc kit or will I need to go custom anyway? Or will a 3" custom center be needed. And if so can I run the 3" centre without the sc for a year or so.... Sorry bout the questions but I want to hopefully do it once
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