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Dan McColl Goo Roo Victoria (The Nazi State) Pretty Red Thing and The Black Rattler
Posts: 3654 Reg: 07-2005
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Wednesday, August 01, 2012 - 09:32 pm, by: Dan McColl(Hoon)
You'll need to learn heel/toe. I'd say this is the main part of the problem.
When you downshift without blipping or revving the engine up, when you let the clutch out after the downshift the engine is working like a handbrake and basically trying to slow the rear wheels down to whatever speed they'd be doing at idle (20-30km/h) while the car is doing 100+.
Combine this with the forward weight transfer under braking while the rears are already light then it's not hard for the engine braking effect to overcome the rear traction and therin lies the issue.
What you've got is basically like reverse axle tramp.
What you need to do is sorta roll your foot off the side of the brake pedal so the side of your foot presses the throttle during the downshift (while the clutch is depressed).
If you have a G25 or 27 you can practice this pretty well at home playing games.
