Re: Bogging/shifting problems

[Macgyver]

I have the issue of losing traction on the 1-2 shift. Myself and brad have really tried adjusting a few things as far as the shifting goes. It'll lose traction on the 1-2 hit then completely pull itself out of gear because the stability/ traction control completely freaks out. I only have this problem launching on hard prep at the strip or in wet conditions on the street. Launching at 2k on the dry road I will be fine. Launching 2k on a prepped strip gotta watch the traction. Pretty sure it's due to the fact that I am off the heavy prep at the top of 1st.

I also was losing traction on the 1-2 at the drag strip to the point the car would actually dance sideways and trigger stability control. One time it even shut down for about 10 seconds almost giving me a heart attack. From that point on, I always completely turned off stability control and never had a problem since.

It happens with or without stability control on.

AJP has had people experience the issue and has not found a "fix" for it.

Now the question is. Do other tune packages like Unleashed or Livernois tuned cars have this problem? Maybe it is something simple in the tune as the more fluid did not fix it for me.

 

[shoNoff]

I have had the problem with an unleashed tune as well. As a matter of fact my unleashed tune seems to do it more. I have the advancetrac off in my car and it does it. I’ve never tried launching it that hard in advancetrac sport mode.

 

[Macgyver]

Thats good in a way. At least it is not a single tuner thing.

I guess I need to load my 93 AJP tune and see if it does it with that. I have had it happen on my E30 only but the weather has changed.

Wheel spin seems to be the culprit imho. I think all my instances happen with some type of wheel spin. Not hop. Just spin.

I have also tried "D" and "S" transmission selections. Both "failed".

Maybe using "S" mode and paddle shift early?

I will have to try this. If that works then it will be easy for a tuner to adjust the 1st to 2nd shift point.

 

[ZSHO]

I would try to rule out a weak solenoid or a new solenoid body assembly!
The TSS & OSS sensors too. Z

https://drive.google.com/file/d/1hzAzBdEUs5jFGk2sxjSoGQM_T7_UPnnd/view?usp=drivesdk