CATCH_M3 wrote I believe the 335is has an 'overboost' providing quick bursts of 369 lb-ft of torque. If so, let's say you activate it at high RPM.. Shouldn't the max HP rise higher than 335HP momentarily as well.. 335HP seems kind of low for 369 lb.ft of torque if you have it activated around say, 5500rpm. After all, horsepower is just a function of torque x RPM.
369 lb.ft @ 5500 rpm = 386 Horsepower if I calculated correctly. (I believe 335i engine holds max torque till around 5500 rpm if I remember correctly?)
I could be wrong here, but doubtful the 369 lbs ft "overboost" will be at 5500 rpms. Therefore, there would be no "overboost" in HP.
The overboost will probably be in the 3000-4000 rpm range for those quick passing situations.
And in that case, it's at a rpm low enough to not affect the peak HP numbers.
As for the comparisons of the 335is vs M3, I am shocked you guys are even "worried" about it.
The fact of the matter is stock for stock it won't be competition for the M3.
The 335is is to the 335i what the Corvette Grand Sport is to the Corvette.
The Corvette Grand Sport is not competition for the ZR-1 much less the ZO6.
The 335is is simply made to be a slightly sportier and more powerful version of the 335i, plain and simple. It will simply perform a bit better.
Instead of the 13.4-13.5 @ 105 mph 1/4 times it will probably be
13.1-13.2 @ 107-108 mph. Likewise, it's handling and braking numbers will improve a bit too.
No biggie, like some said, just enough to counter the fact the new 2010 S4 has edged out the 3 year old 335i now in acceleration and handling.
This will put the 335 back ahead of the S4 and give 335i owners/leasee's the opportunity to get into something slightly nicer and faster, if they don't want an M3.
Since the 335is is simply a N54 with a bit more boost and the requisite tuning to go along with it, you can think of it as what the 335i's acceleration was with a very mild piggyback tune on it. The 335is won't be able to be tuned anymore than a 335i can be however, since it's the same N54 engine.