Future owner,few questions :)

[pwpanas]

Originally Posted by iNs0mN1a

If i understand correctly...i have to buy gas every time from the internet.So it's waaaay more easier to put in a w/m inj kit and just use pump gas + buy just the alcohol(methanol) needed...right?

That's a complex question, very dependent upon where you live. Many tuning shops also carry race fuel. As you said, you can find it at race tracks, and of course race fuel distributor locations. When you move to the UK, why not consider your fuel supply when you pick the place to live?

Don't forget you only need high octane fuel when you mash the accelerator pedal to the floor. Whenever you drive like a granny, pump gas is just fine.

I'm not trying to talk you out of alcohol injection. However, it would be another completely new system on the car, and a therefore a new potential failure point. Running race fuel avoids this complexity. Lastly, alcohol injection has a max horsepower limit; if you quickly outgrow 600rwhp, that alcohol injection system could turn out to be a waste of time and money.

[iNs0mN1a]

Originally Posted by pwpanas

That's a complex question, very dependent upon where you live. Many tuning shops also carry race fuel. When you move to the UK, why not consider your fuel supply when you pick the place to live?

Don't forget you only need high octane fuel when you mash the accelerator pedal to the floor. Whenever you drive like a granny, pump gas is just fine.

Yup,that's a very good idea...I just wanted to gather all the info and just make a total of $ I need to invest beside the car itself,this is why one of my questions was how many hp's will a bpu++(+) / apu have,so i can know the parts i will be needing and their prices
Oh and i'm not buying a supra to drive it like a granny

[pwpanas]

Originally Posted by iNs0mN1a

... Oh and i'm not buying a supra to drive it like a granny

True, but if you drive it aggressively all the time then gas mileage will suck and it will cost you a fortune in traffic tickets.

[iNs0mN1a]

Originally Posted by pwpanas

True, but if you drive it aggressively all the time then gas mileage will suck and it will cost you a fortune in traffic tickets.

Yes i know,you're right...but i wasn't suggesting aggressively,but just w00ting once in a while(of course,every time i drive).
So that means w/m inj kit would be better,right? Cause if i have low octane fuel in the tank and i want to drive it fast for a few minutes,that would mean high boost(high boost,low octane fuel =>not friends )

[pwpanas]

Originally Posted by iNs0mN1a

Yes i know,you're right...but i wasn't suggesting aggressively,but just w00ting once in a while(of course,every time i drive).
So that means w/m inj kit would be better,right? Cause if i have low octane fuel in the tank and i want to drive it fast for a few minutes,that would mean high boost(high boost,low octane fuel =>not friends )

Why w00t on your way to work stuck in rush hour traffic? You could run w00tless weekdays and run race fuel on the weekends. Either way, I think you have all of the information you need to make your own decision on this topic.

[deigima]

id just like to pop my head in here, im new to the supra scene, but i know how strong the supra engine/driveline is, and all that, and in my reading i have read that it is possible, through upgrading the exhaust, intake, and engine management, that you can acheive 450-500 hp, is it as simple as it sounds, and more importantly, possible? im mostly concerned about this methanol injection thing, if i want to run a bit bigger horsepower figures i dont want to have to run different feul, id prefer just using pump gas..

[pwpanas]

Originally Posted by deigima

id just like to pop my head in here, im new to the supra scene, but i know how strong the supra engine/driveline is, and all that, and in my reading i have read that it is possible, through upgrading the exhaust, intake, and engine management, that you can acheive 450-500 hp, is it as simple as it sounds, and more importantly, possible? im mostly concerned about this methanol injection thing, if i want to run a bit bigger horsepower figures i dont want to have to run different feul, id prefer just using pump gas..

Do you mean hp or rwhp?

Either way, yes, it is that simple. Raising horsepower in a turbocharged vehicle is typically not that difficult. The Mkiv Supra Turbo (TT) makes it even easier since almost all of its components are over-spec'd.

Not sure what you mean about a methanol injection concern. Alcohol / water injection is the only practical way to run high horsepower with a relatively small displacement engine (3L) and pump gas. It's great to want everything and then "prefer" to get it all for nothing but unfortunately cars (and life) just don't work that way. The old saying goes: You gotta pay to play, baby!

So, in general* it's one of the following options if you stick with the oem ecu: 1) race fuel at $10-$30/gallon, or 2) methanol injection, 3) ~30% Toluene+MMO ...or be 4) be happy with about 350rwhp max. With an aftermarket ecu you can squeeze a bit more out by playing with the timing curve (be careful!).

* Caveat/disclaimer: There always is one, isn't there? It is possible (but not practical) to get more rwhp on pump gas with a huge turbo. The problems are that 1) the big turbo won't spool till about 6k rpms, and 2) you'll still need to limit boost to about 16psi. Since huge turbos are designed to be efficient at 35psi+, you get the worst of both worlds - terrible turbo lag together with running a huge turbo far below it's ideal boost level. This is such a goofy corner-case that it's barely worth mentioning...I only included it here for completeness of response.