[Guest]

just upgraded the tranny, everything is fine on normal cruising. but if you accelerate hard from 1 to 2 or 2 to 3 the time of shifting changes everytime(the tranny itself shift fast and hard but sometimes there is a little "lag" before shifting) infact of the self learn mod in our ecu. the ecu gives the input to the tranny how and when to shift.
do you guys changes the value of the tranny oil temp to a fix value to solve this problem? or is there another special trick?
thnx

 

[RSA Supra]

Your question is kind of vague, I'll try to answer it. But first of all, who upgraded your tranny?

I've had 2 different tranny upgrades in my car. 1st a Level 10 which felt great and shifted really, really hard all of the time until it blew up. And now the SP which is much better, shifting relatively smooth when you're not into it that hard, and shifting firmly when you get on it. Not to meantion it isn't going to blow up like the Level 10 did.

The ECU will tell the how and when to shift, but a good upgrade will make the tranny shift harder and hold pressure better when given certain values by the ECU. I'm not really sure what you are trying to explain your problem as, but both of my upgraded trannies shifted right away. I have had a 2800 stall convertor in my car ever since I upgraded the tranny the first time. If you don't have a Stall Convertor, you should probably get one along with a huge auxillary tranny cooler.

 

[Guest]

Ryan,
many thanks for your answer. I'm from europe and a local specialist made the tranny upgrade with quit the same parts as SP does. Perhaps there is a difference in the springs of the tranny solonoid valves. My tranny shift much harder from the 1st to the 2nd and from the 2nd to the 3rd gear. when you race arround the street the characteristic of shifting changes, that means that it becomes like a smal lag befor the gear kick in, that feels realy ugly. I could be possible that the specialist tooks to hard springs for the tranny solonoid valves. do you have any ideas about the values of the tranny solonoid valves springs? that could be the problem. First I was thinking if my ecu correct the shift parameter infact of a tranny oil fluid temp jump from 50 to 80C and reverse, but it seems that the springs for the tranny solonoid valves are too hard.
thanks
Markus