Quote:
Originally Posted by takemorepills
According to Q50/60 VR folks, the difference between the 300HP and 400HP models is largely erased with tuning, the tunes gain A LOT on 300HP cars and less on 400HP cars, bringing tuned 300HP cars close to the tuned RS cars. The 400HP VR is not terribly different from the 300HP model, I believe turbine speed sensors and an extra cooler. Careful tuning and adding more cooling are what most people do to achieve big gains from the 300HP VR.
There's other questions I have too, like what kind of differential in the different trims?
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From what I understand, there's an extra water pump and an oil cooler on the Red Sports in addition to the turbine speed sensors. AMS has demonstrated a lot of the bottle necks come from the cooling from the factory with their aftermarket offerings. The other thing I'd consider a requirement is Z1's HKS BOV kit as the VR comes with no recirculation or blowoff setup at all, and that's what kills the factory turbos in the car prematurely.
For me, I'd prefer to get the top tier configuration and have it under warranty for a while. I'd get a good starting point to get comfortable with the car and then build off that over time. But they'll sell plenty of the 300hp configurations to people who will start throwing the mods at them right away and that's awesome too!