Thanks for your thoughts Gorilla.
It's a huge can of worms to stick an S62 in the E46 M3 !
To give you some idea it took us about 4 years to get it right in the race car. The engine in that car produces 570bhp and has had about £15k spent on it + £10k every season or two for an overhaul. It's had all major internal components upgraded.
Also, I'm not wanting that kind of power, even if I wanted 500bhp I would just supercharge the S54.
What I want is the CSL noise above anything else! A bit of extra power would be a benefit, but it's not the main reason. Just wondering if CSL cams would give me any benefit at all, but it's not esssential.
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