Forgive the thread resurrection but I`m thinking of going EFR7163 internal gate for circa 500bhp ish.
I`ve read spool is fantastic on these and are slightly smaller than 7064 and 7670?


I`m a little worried about torque delivery though as my car only weighs 730kgs with me and fluids with 205 section tyres. At the moment it`s on a 3076r and the more gentle torque tip in suits the car but I do want more low down power.


With the GT30 I`m travelling a little faster when the boost hits so traction is "just" manageable. I wonder whether the car would be a bit undrive-able with the BW turbo?


I know you can map round this but if you`re mapping out some lower rpm torque is it worth swapping??