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2000 Rover MPI - exhaust popping and cracking

Evening all, after fitting a RC40, i noticed a quiet popping on over-run, ie if i blip the throttle between changing from 3rd to 2nd etc, on taking up 2nd gear the exhaust pops, bangs and cracks for a second or so. Ive recently fitted a K&N induction kit - ie a big cone filter not unlike carb models. since this, the cracks and pops have become louder and last for up to 2 secs on change downs etc. Personally i think its really cool, but is it having a detrimental effect on my engine at all?

thanks RS

Reply to
RS
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I have had this on my 2001 Classic Mini 7 since i fitted a bolt on RC40, it reminds me very much of when i had a suped up morris minor 1100, this i think is ok, have been running it for over a year now like this and has had no effect on the engine, i definatly found an increase in performance though. Must be the gases being chucked around the silencer, the original late model Minis had huge rear silencers and a average size middle one, the RC40 generally is just one silencer, so lots of gas bouncing around!!! lol

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Barspeed and his magical Mini'

Reply to
Fitzy

Well i've always fitted Maniflow exhaust products and i've never had that problem, mind you i've always fitted twin-box exhausts.

Taffy

Reply to
Taffy

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