Quote:
Originally Posted by 631twentyeighteye
You hit the nail on the head in all regards. The rear subframe bushings are prone to slop and being soft causing that understeer feeling you talk about. As for power and torque, toss on a DISA manifold(x3/130i/330i) and a tune, and you'll be at about 275 crank horsepower over the stock 230.
The runflats are garbage, get rid of those ASAP for any decent set of summer tires.
Also, you can add a CDV(clutch delay valve) delete to get better clutch feel and more consistency, as well as a BMS clutch stop that gets rid of the dead pace at the end of the clutch pedal throw. These two mods make the biggest difference in regards to drivability.
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thanks for the advice! i already have the disa manifold i think because this is a massachusetts sulev car with the n51- so the compression is lower but i think it has the DISA manifold. i'm waiting for the evolve to figure out the tune for my engine....but i think the tires and clutch stuff should happen first anyway.
as for the engine "breaking in"- i have no idea about that.