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Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 08-07-2012, 02:03 PM   #1
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Join Date: Aug 2011
Location: North Carolina
Posts: 12
My Ride: 2005 E46 M3
Seeking advice on s54 potential

As the title says, I'm looking for insight on the s54's potential being a fully built race motor to be somewhere near the range of 490 whp. And no, I want to stay away from forced induction. Not that I frown upon it or anything, but we're working on staying NA to remain in a certain race class. What we've have looked into thus far is sleeves, cams, and the csl airbox with alpha-n tune. Aside from that we were hoping some of you could shed some light on other components. Our cash flow in the past has been devoted to the chassis really, Bilstein PSS9s, TMS subframe reinforcement kit, sway bars, weight reduction within the car to include Kirk Roll Bar and sparco buckets, StopTech BBK, K&N Typhoon CAI, TMS power pulleys, and high-performance ignition coils. We're ready to order a pair of headers (not sure if for the sake of harmony with future components we should choose euro headers or SSv1) to hook up nicely to our SS connecting pipes.

Much to the dismay I'm sure with many of you, if we cannot achieve somewhere near 490 whp, we have considered as a last resort to motor swap the s54 with the s65 and go from there. Our end objective is to achieve near the power and performance of the e46 m3 GTR and as far as I know, the s65 although underpowered by comparison is an improvement of the p60b40.
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