We’ve been talking with Krzysztof about automatic trans swap for a sports car for a long time.
His Subaru BRZ has swapped 2JZ GTE engine making over 800HP and is fully built competition drift car with no space for mistakes and failures – competing requires reliability to make sure You can fight for top places on the podium.
Finally green light came up for the DCT swap.
2JZ got mated with BMW M4 7 speed dual clutch transmission (GS7d36sg). M4 version of the DCT is a long ratio gearbox with two overdrives. Overdrives are not usually used in drifting scenarios but Krzysztof’s Subaru features Winters differential so after quick play during tests session we were able to pickup a set of teeths allowing use of all 7 gears while drifting.
Car has just up/down shifter that acts both as a sequential shifter and drive mode selector, Clutch-by-Wire pedal allowing clutch kicks, programmable dashboard displaying both ECU and GCU live data.
Of course whole transmission system is operated with standalone HTG tuning GCU Gearbox Control Unit .
DCT setup for drifting made car easier to compete, reliable with great leverage compared to manual transmission cars with no chance for miss-shifts, quicker acceleration on start and of course ability to shift both UP and DOWN on full load!
Second thing is durability. GS7d36sg transmission is very strong and robust unit!
Subaru makes over 800HP, runs semi-slicks at pressure below 14psi and no camber on rear end. Krzysztof runs OEM clutches without any issues with clamping force even in really harsh scenarios and clutch kicks.
Car has been built by Krzysiek himself and it’s not the only one that he owns, hopefully also not the only one with the GCU!
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