Ok I have a 04 na-t is300 running on e-manage b , it has a dragon torque converter stall set at 2800 also has a toyomoto vb upgrade I just recently (2 weeks) flushed the trans with redline d4 synthetic ATF now its idk if you'd call it slipping but not catching from 2nd to 3rd only way it'll shift is if you let of the pedal and bring it down to about 15mph . It's not throwing any cel's . Would love to get some input on this before I buy a new tranny .
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Or if anyone knows of a shop or guy here in San diego , ca it will be much appreciated

 

My information may be wrong, but I read somewhere online that you can only run the OEM transmission fluid from Toyota, and any other fluids may damage the transmission. Might want to look into that.

Good luck.

 

Yea I heard that to, but redline d4 is compatible with Toyota fluid

 

Good deal.

 

Find out its not slipping , it's shifting from 2nd at 2500 rpm to 1st then up to 3rd

 

Y is it doing that?
My Auto IS is doing something like that its really weird...

 

Nevermind I think I'm gonna need a new tranny what it was doing was shifting from 2nd to 1st then to 4th missing 3rd because 3rd is completely gone