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Guest NVDGTS4

Hey guys i've got myself an R33 GTS4. Afew weeks ago i got myself a 2.5" From the cat back with a Hotdog probably 16" long and my Magnaflow Twin tip muffler put onto it. It sounds freakin sweet as but not to loud. But when im driving fast acceleration around 2800rpm to 3800rpm i've got this "clicking/Whipper snipper" Rasping sound and it sounds like complete shit ! but after that rev range it sounds like a true RB. I've tried everything even fitting a different muffler but i cant get rid of it!! .. What have you guys got running that dont have the rasp? Oh by the way its Mendral Bend and the engine is S1 (139Kw) RB25DE

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https://www.sau.com.au/forums/topic/197985-rasp/
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Hey,

if you have a quick look through most of the exhaust threads in the N/a section you will find that everyone has come to the conclusion that there is no way to get rid of the rasp between 3 and 4000 rpm or there abouts.

its got something to do witht he twin cam setup on the rb's

just ignore it or turn your stereo up :blink:

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https://www.sau.com.au/forums/topic/197985-rasp/#findComment-3537592
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I KNEW IT WAS GOING TO COME IN HANDY! :)

Thanks eug!

i never notice anything strange on my car? lol

Early model Rb25de's came with a flap in the exhaust that was closed under cruising conditions and open when W.O.T.. this was done to stop the raspy-ness

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