Quote:
Originally Posted by aus
Why couldn't BMW just modify the S65 with Direct Injection, which should be good for 10-12% increase in HP and mileage. This would put power at 450HP, while improving fuel efficiency. They could also add Efficient Dynamics for another 1-3% improvement in gas mileage. Then, if they dropped the weight by 300lbs, that would be good for a little more mileage. It could be at 24-25mph HWY, which isn't too bad.
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The current M3 engine we have now is actually an old engine. It was actually intended for the E60 M5 but when the RS4 came out, they realised that the V8 would not be good enough for the M5. They shelved the engine and developed the M5 V10. When the E46 M3 was up for replacement, they used the V8 they shelved. That explains why the M5 had a DME which was MSS65. When the M3 with the V8 came out, everyone thought that would be MSS70 or above. It was actually MSS60 which was even before the M5. At that point, I dont think that the S65 would have been able to be incorporated with DI. Simply because it was an engine that was developed a while back and introducing such tech would cost more money than developing a new engine itself. The same hold true for now. Incorporating such tech into an engine not designed for DI would only cost more money. And possibly more problems too. Its better they redevelop the whole engine from scratch to have these tech. Safer and more efficient.