enjoithis

Hey, don't yell at me for not seraching, I did and couldnt find anything!

SRT-4's and some other cars have this distinct poping sound when the engine revs down (when you down shift), our tC's do it a little bit with an aftermarket exhaust, but nothing like the SRT-4's. Even my old GMC Jimmy's 4.3 v6 would crackle if i dropped it down a gear when slowing down. Can anyone explain why some cars do it and some dont? And what causes that sound? I know that they say turbo's increas the poping but.. why did my truck do it so much N/A?

Next - how do i make my tC do it?

RodC

Front page, halfway down...

https://www.scionlife.com/forums/viewtopic.php?t=187188

ScionizedRide

this thread will help you out

https://www.scionlife.com/forums/vie...614&highlight=

MrBurrito

iTrader: (2)

get and s-pipe, mid-pipe, and exhaust i have the tsudo mid-pipe and the tanabe concept g axle-back and when i down shift i get the sound ur describing

enjoithis

This is what made me think of this acutaly... its not much of an answer
im lookin for more of a full description

RodC

Google.

TRDChargedtC

iTrader: (2)

yeah my 5.0 did that alot when downshifting and i wasnt sure but i think its the less back pressure you have

tCtCtC

I have a full 2.5" straight pipe catback with an 170mm HKS Carbon Ti and have a lot of back pressure, so i get the "popping" sound

enjoithis

i just ordered a megan mid pipe, i dont wanna do spipe since turbo comes with it... ill get the s pipe later... ill post a video once i put it in, hopefully it adds the crackle. still dont have a good explanation why it happens, but if this doesnt do it the turbo will.