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Originally Posted by jediali

hmm the evo and the 335i are chalk and cheese in the world of turbo lag...then there is refinement and noise to consider. To me this engine is an all time great. No wonder alpinas tweaked version threatens the M3.

Its a good engine not really great, Toyota had a similar set up in 1990 with the 1/2JZ engines. Toyotas system was slightly different at low engine revs all the exhaust gasses went to a single turbo to help with spooling as revs and exhaust gases increase both turbos get the exhaust gases and maximum boost is acheived. There was virtually no lag and plenty of boost up high. Tweaked versions of the 1/2JZ will make a lot more HP than a BMW.

Toyota JZ engine - Wikipedia, the free encyclopedia