Very odd problem

Lowbz21

When I am in mid corner going decently quick, off the gas, once I hit a certain amount of lateral g-force the car goes slightly on the gas by itself.

Can someone chime in on what they think this might be or why it's doing it?

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@jayem_bo

Rusty

Left or right hand turn?

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Lowbz21

Both

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@jayem_bo

DEpointfive0

Lies!!! Lol

It's honestly most likely a long hard right turn. Which is fuel starve because the gas tank is designed shittily

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Lowbz21

Lol nope it's both but wouldn't fuel starvation be the opposite? More of a bog rather than giving the car gas?

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@jayem_bo

SPOHN

Your car is trying to say let's go

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DEpointfive0

Yep. I'm drunk and have been for 2 days. I read that the car goes off the gas itself. My bad.
Carry on

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Lowbz21

Hahah I actually laughed at that

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@jayem_bo

SurfDog

Mine does it too. I think its a VDC thing to keep you from skid/over-steering. It usually happens on full decel, in medium to hard high speed (50-60 mph) turns. about .8 Gs maybe. Usually downhill it seems.

Try to find a place where it happens consistantly, under known parameters (mostly speed). (I found a certain off ramp that did it) ... then try the turn with VDC off.

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09 6spd Berk CBE, JWT cams, ZSpeed CSC, Stillen (25 row oil, brake cooling, sways, gen3 CAI), Passport (9500ci), Quaife LSD, Z1 400 hp kit, ss lines, pads, rotors, clutch etc, Phunk's pan and fuel starve fix

SouthArk370Z

Just a guess but, if you have the 7AT, it may be the throttle blip on downshift.

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Lowbz21

Ill try with vdc off, but if that's what it is that seems very unsafe.


It's a manual

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@jayem_bo

SurfDog

Well when you say unsafe i kind of agree. It always used to catch me by surprise. Once you begin to anticipate it... It's just annoying. I go VDC off for decelerating downhill turns.

VDC is really only useful when you are turning your attention level down or are in wet/snow IMHO.

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09 6spd Berk CBE, JWT cams, ZSpeed CSC, Stillen (25 row oil, brake cooling, sways, gen3 CAI), Passport (9500ci), Quaife LSD, Z1 400 hp kit, ss lines, pads, rotors, clutch etc, Phunk's pan and fuel starve fix

Lowbz21

You may be right, I turned vdc off and went around a corner trying to get the car to do it and it didn't happen. I may just not have been going quick enough but if it is the vdc I won't why I couldn't find anything when I searched. You'd think these track guys would go nuts the first time it happened and post something up trying to figure it out.

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@jayem_bo

SurfDog

It doesn't happen when you are braking as far as I can tell. Track guys (like me) seldom only engine brake around turns. Usually there is either some feathered in throttle or full brake or full throttle on race turns. Also most of my tracking is done VDC off so I can slide a bit without loosing power exiting turns. VDC off eliminates the problem.

I'm with you though the first time it happened to me, I almost crapped my pants it was so unexpected.

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09 6spd Berk CBE, JWT cams, ZSpeed CSC, Stillen (25 row oil, brake cooling, sways, gen3 CAI), Passport (9500ci), Quaife LSD, Z1 400 hp kit, ss lines, pads, rotors, clutch etc, Phunk's pan and fuel starve fix

SurfDog

Try going around the same turn several times at known speeds to induce the "nanny". Then once you can get it reliably to occur go VDC off. I bet your problem will be solved.

I believe this is caused by the unloaded rear wheel slipping as you turn. The throttle comes in to "plant the wheel and/or to negate your deceleration (moves your "traction circle" more toward the lateral axis as you turn.)

One note, that's a pretty aggressive (close to lateral g limit) turn to get the VDC to step in. Be careful out there. Cheers!

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09 6spd Berk CBE, JWT cams, ZSpeed CSC, Stillen (25 row oil, brake cooling, sways, gen3 CAI), Passport (9500ci), Quaife LSD, Z1 400 hp kit, ss lines, pads, rotors, clutch etc, Phunk's pan and fuel starve fix