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      02-22-2012, 11:37 AM   #67
Some dude

Drives: E28 M5, E92 335i
Join Date: Sep 2011
Location: Northern VA

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Originally Posted by vasillalov View Post
Credit is due where credit is due: Very nicely done! Congrats!

Question: why is it that the torque remains constant? I mean, it is good that there is no torque drop-off, but there is no torque increase either.
There is a slight upward slope from 5500RPM and up. The efficiency of the engine is not geared toward high RPMs, so the breathing is not conducive to upward sloping torque curves. The boost level climbs to compensate, and it looks like there is indeed a slight increase in torque. This would be easier to accomplish with different cams, too.
RRT Racing
E92 335i/6MT Dinan Stage 3: intercooler, oil cooler, intake, flash, exhaust, LW dual-mass flywheel.
Vishnu PWM methanol custom trunk mount, Diffsonline 3-clutch Salisbury custom diff, Ohlins Road and Track coilovers, Vorshlag camber plates, much more...
E28 M5 w/ buncha stuff, R171 SLK350