Pulling timing/closing throttle before and during shift randomly- NAG1

All,

I am working on getting the NAG1 in my turbo 300C to shift perfect, and everything is great until it randomly pulls power before and through the shift with the throttle and timing. It looks like a V in the timing and the throttle; What can cause this randomly on the 1-2 and 2-3 shift? I think it's even happened on the 3-4 shift before. The rev limiter and max rpm in D are far away at 6800rpm.

I want it to pull timing for the small time it is shifting like shown in the other shifts.


Attachment 123272Attachment 123273

Lemme know if you need help.

there are spark reduce a and b for the tranny.
disable b and let a for shifting on.
look at your torque table for shifting and set the values higher.

On transmission side, you could play around with shift pressure and torque management.
But, be careful. If not correctly done, you can damage your transmission quite bad.

In case you need personalized support tuning, let me know (more than 12y of experience on tuning ZF 8hp transmission)

Email: [email protected]