I thought I'd share some initial testing of my upgraded FP Old School Red by TPC.

Nick swapped out the turbine and shaft for a 9 blade turbine and coupled it with a billet compressor, the whole rotating mass being near 80g lighter.

My goal was to make the car more responsive in the lower RPM's as it already has some nice strong top end.

Here's some initial results from early testing on the upgraded turbo, same tune as last year, just boost set for approx 25 psi for initial testing.

Sold line = New TPC billet wheel/9 blade turbine
Dashed line = Old cash 35r wheel and turbine

Dark yellow = Boost pressure
Light Yellow = RPM
Green = Air Flow

That's a solid 4lbs/min gain at the same boost/rpm



More to come, as well as results with an upgraded FMIC core later on