LS400 1UZFE VVTI ECU speed limit problem

[logannaidoo]

HI,
can someone please advise or help me out. I have put a LS400 1UZFE VVTI motor into my bakkie. Its a 94 model. The gearbox is 5 speed auto. The problem i am having is that I cannot get to a speed over 130Km/H. The ECU is somehow speed limiting. The ECU is a 89661-50450. Any help or advice will be most appreciated.

many thanks
L

[George]

Do you feel like it shifts into all of its 5 speeds?
What gear ration in the diff do you run?
Normally speed limit is 180kph on JDM models, and over 200 for Europe and USA.

When double sure it's speed limit you can try HKS SLD type 2 or the like