Si TSP Car randomly jolts when stepping on the accelerator

[fiend busa]

This very rarely happens and idk if my cars just messed up or its with TSP tune but sometimes if I rev match down into second and go WOT (not instantly, I wait for the rev match to complete first) the car will JOLT really hard and I can feel something in the accelerator like its trying to connect to something.

It lasts about a second and everything goes back to normal...it occurs very rarely

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[250GTCalifornia]

See if you can data log it then send it to Derek.

 

[fiend busa]

See if you can data log it then send it to Derek.

I will try, it's very random as to when it occurs.

 

[360glitch]

There is no relation between this behavior and your tune.

What rear motor mount do you have in place?

 

[fiend busa]

There is no relation between this behavior and your tune.
What rear motor mount do you have in place?

Stock

There's no wheel hop or engine shake when this happens

 

[Coolnezzz]

There is no relation between this behavior and your tune.

What rear motor mount do you have in place?

I started experiencing a similar thud/bang when accelerating from 2nd after downshifting after applying Vit's stage 1 tune. I very quickly eliminated this with a Hasport 62a motor mount, which has done wonders for drivability once the car is moving. If you can get used to the vibrations when taking off, it's totally worth it. I have about 400 miles on mine and the vibrations have calmed down to the point where myself nor my passenger really notices them when taking off any more.

 

[Micah]

Maybe clutch delay valve is the issue. Perhaps wait a little longer before getting back on the throttle?

 

[KramVT0215]

Normal the TSP tune uses a more aggressive throttle padding so virtually none so it's harsher also the stock motor mounts are very flimsy so you're prob feeling the motor flopping around too on hard shifts

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