RuudVr 8 Posted November 16, 2011 Report Share Posted November 16, 2011 Hi guysDoes anyone have a clue why this noise is happening. Basically I have a rotrex supercharged vr6, every now and again when I'm driving and press the gas, I get a noise coming from under the car in the exhaust. The noise sound as if there is crackers going off. The car has a original cat box, but the cat has been removed. Any ideas would be appreciated. Thanx Link to post Share on other sites
Daverse 175 Posted November 17, 2011 Report Share Posted November 17, 2011 Its just over fulling a bit, which gets burnt in the exhaust, has it been remapped? Link to post Share on other sites
bungy 2 Posted November 17, 2011 Report Share Posted November 17, 2011 Is there sooty black deposits around the exhaust tip? Link to post Share on other sites
RuudVr 8 Posted November 17, 2011 Author Report Share Posted November 17, 2011 Hi guysThanx for the reply. Yep the car has been mapped at storm. And yes there a black powdery soot in the exhaust. I thought the sound might be harmful to the engine?Also do thing a proper decat Link to post Share on other sites
RuudVr 8 Posted November 17, 2011 Author Report Share Posted November 17, 2011 A proper Decatur system with a 6 branch manifold would stop it making that sound ? Thanx Link to post Share on other sites
Vw_owner 1 Posted November 20, 2011 Report Share Posted November 20, 2011 hi, so the crackiling/poping you get when you de-celerate is from the fuel being burnt in the exhaust? i had this with my old ss exhuast but with my new milltek decat system i dont get the noise much maybe becuase the sound is muffled more, Link to post Share on other sites
RuudVr 8 Posted November 21, 2011 Author Report Share Posted November 21, 2011 Thanx guys for the advice. I think I just need a new 3inh SS exhaust system along with the 6 branch then. Link to post Share on other sites
russj249 2 Posted November 21, 2011 Report Share Posted November 21, 2011 A new 3 inch exhaust will probably make it louder.. personally I like popping on overrun with turbo, but not to everyone's cup of tea. Never asked do you have a 3 inch exhaust the moment? Link to post Share on other sites
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