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actually 300hp flywheel not rear wheel

First off, the turbo injectors will not plug in, and the lex AFM will not work (different design and function). Second, there is no need for bigger then stock which BTW are 315cc for the later and IIRC 295cc for the earlier. The 295cc units are good for between 250 and 260 hp. The 315cc...

as Nick said, nope. Totally different opperating principal. You should be fine with all the stock equipment. You are most likely running a tad rich as it is and to rich causes a lose of power anyways. 99% of the time a N/A engine will make its best power when the AFR is somewhere between...

The only link that I know of that would have the yellow plug pinout guide is this. http://65.30.134.27:5080/forum/host/87%20Supra%20TSRM.zip Hopefully this helps. unless anyone else knows where there is a place to find the early pinout guide

Then that pin out is not going to work cause it is only for the gray plugs.

Actually, 1 ponypower equals 1/4 horsepower. So it would be 2 ponypower or 1 coltpower to equal 1/2 horsepower

That is only for the gray plug harness and ECU. will not work if you have the early setup with the yellow plugs. Most 89's have the gray and you should be good, but some 89's still had the early style and they are yellow and different. Just a heads up!

yeah, and thats why seat of the pants feel is not a way to tune a motor. I would not suggest changing it unless on a dyno and with a wideband.

Tire size is also going to effect the speed so we would need to know that also. one last thing to verfiy from what your posts stated, it is a turbo 5sp (i.e. R154) correct?

Yeah, shifting habits and the clutch are what really destroy tranny's I have seen W58 hold over 400whp fine and I have also seen people blow up R154 with stock engines. Make sure that you use a sprung hup clutch and dont dump the clutch at like 4000RPM and it should hold fine. Yes the W58...

Yeah if will not fry the MAS if you do it write. It will infact cause a richer mixture. No need for it as in every case that I have seen, the mixture is to rich to begin with. Tightening it by a notch or two and playing with the sealed bypass screw has actually unlocked a few HP in some cases...

Yeah as I originally said and as Nick just said, if you are making 253tq @5200 then you have to be making 250 hp @ 5200. The equation works regard less of where you are measuring the tq from (wheels, or flywheel). there is no way to physically measure HP all that can be measured is TQ then...

Not to rain down on ya here, but something is deffinitly wrong here. If you had 253 rwtq @ 5200 RPM then you should have had 250 rwhp @ 5200 rpm. Something tells me that the dyno operator did something wrong and those numbers are not correct. With those numbers, you would be making somewhere...

Have you ran it at the track with the mods that you have done, and if so what was the times and MPH's?

what all do you have done to get that high of numbers? Are those soppost to be correct Flywheel number?

Yes the light is off of a different sensor, but is on the same assembly as the gauge sender. No you do not have to drop the tank to take the sender out. The sending unit is the item that is attached to the tank under the access panel in the hatch. I wish toyota was smart enough to make an...

470 flywheel hp is right at about the safe max for 550's in a 6cyl. at 85% duty cycle. A very easy equation that will get you very close is inj. cc X # of inj's. / 7 = max safe hp @ 85% duty cycle so 550X6/7=471.42hp Remember, this tells you flywheel HP and is for assumed .50 BSFC...

Welcome aboard! The hesitation that you speek of could be do to the knock problem. If the knock sensor triggers, the computer pulls out timing from the ignition. This cause a lose of power but a side effect is that retarded timing actually cause the turbo to spool better cause of the rise in...

There are a couple of ways that you can go about doing it. You can buy "reusuable" fittings and get a length of fine for the size that you need and assemble them yourself. They can be a pain to assemble until you get the hang of it. The three main suppliers are Earl's, Aeroquip, and Russel...

it depends on what the condition is at the time i.e. crusing, WOT, ect......