maxnix wrote:The VK45DE is pretty well maxed-out in it's present state of tune. Intake and exhaust are fairly well optimized.
Not in the FX they're not.
The FX has a detuned version of the 340 hp beast that powers the Q45 and thr M45. It is hobbled to 315 hp through the ECU program and exhaust design.
There's no reason you shouldn't (with a sufficient application of $) be able to return it to the 340+ hp mark, as there are no internal differences - all peripheral.