Quote:
Originally Posted by stefan
Removing the S62 is a sacrilege. By the way both the S54 and S62 need..absolutely need headers and high flow cats. These motors need to breathe. When people say the Dinan versions seem to haul ass, I think they are feeling the effect of quality headers. I am fairly certain an FBO E46 M3 zcp will be quicker around most low elevation tracks than an M2.
For sure the Dinan stuff isn't worth it. For suspension the clear choice is Ground Control on the e46. I would also avoid intakes and any kind of TB upgrades. Snake oil for the most part.
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Dinan never offered headers or a header tune for the e46 M3
CSL intake with CSL engine management and a tune actually makes some power-- particularly on an s54 with cams/headers already. MSS5X tuning has come a LONG way in the last couple years-- my car is up 70 SAE RWHP over stock, NA. At this point, the TBs would actually probably be good for another 5-10 hp (though that's a pretty expensive 5-10hp).
Suspension... there's actually a ton of good (and bad) options out there. Dinan's is just unexceptional and overpriced.
My wife likes the torque of the M5, so it's staying in that car. My original plan was to swap the M5, but she was against it... so I got the 530i to use as the starting point. The 530i is probably a better starting point anyway, since the I6 cars got R&P steering (whereas the V8 cars got reticulating ball-- much worse feel). I'm pretty excited for an s54 e39-- the curb weight on the manual trans e39 530i was only 3472 lbs stock, so an s54 version should be ~3500 lbs... in a very stiff chassis, with space for 4 people sit in comfort, and a full size spare tire. With some light weight but comfortable reclining aftermarket seats and some other tweaks, the passenger space is further increased (thinner seats, more ******* and I suspect I should be able to get it down to ~3400 lbs without compromising any comfort/quiet... with the kind of powerband I like (high revving, low torque) and R&P levels of steering feel.