Based on your signature -
Have you regeared your axles for the bigger tires? You'd be surprised what a difference that can make.
That, and have you changed your intake? With the open exhaust/headers and cam, the 3" Supra intake can make a difference too. More in, more out.

With 200+ Billion electrical parts, the world most complicated machine is inside your own skull.

Question Reality.
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'89 Rnr DLX "SR4.5", 32s w/ 5.29 locked f/r blah blah