Future owner,few questions :)

[pwpanas]

Originally Posted by iNs0mN1a

Firstly,thank you for taking you're time to respond in such a manner
Secondly,I don't plan to take my supra higher than 700 hp(~600 rwhp).What would you recommand for this? w/m inj kit or alcohol inj kit ?
The windshield washer fluid is supposed to have ~60% water / 40% methanol...

Glad to help.

By "w/m inj kit" I assume you mean a water/methanol injection kit. Methanol is one type of alcohol. So a "w/m inj kit" is the same thing as an "alcohol inj kit".

For 600rwhp I recommend pure 100 (motor) octane unleaded race fuel. A "w/m inj kit" should work fine too, as long as it's properly installed, well maintained, and regularly tested. If the turbo you choose is capable of more than 600rwhp (which I hope it is not), your boost control will have to be rock-solid.

Again, you don't want the soap and the bug-melting chemicals in windshield washer fluid running through your w/m inj pump or your engine.

I recommend 90% alcohol/methanol, and 10% water for your optimal horsepower & octane boost. 60% water & 40% alcohol is cheaper, of course and perhaps slightly higher in pure octane boost. However, octane does not = horsepower. You loose too many BTUs of heat with 60% water...and therefore too much horsepower is lost along with that reduction in heat! 60/40 might be fine for some ricer honduh or 'billy rustang owner (no offense) trying to put a hitch in his giddyap, but for an Mkiv Supra Turbo running 25psi+ of boost, it just isn't anywhere near optimal.

[iNs0mN1a]

Originally Posted by pwpanas

Glad to help.

By "w/m inj kit" I assume you mean a water/methanol injection kit. Methanol is one type of alcohol. So a "w/m inj kit" is the same thing as an "alcohol inj kit".

For 600rwhp I recommend pure 100 (motor) octane unleaded race fuel. A "w/m inj kit" should work fine too, as long as it's properly installed, well maintained, and regularly tested. If the turbo you choose is capable of more than 600rwhp (which I hope it is not), your boost control will have to be rock-solid.

Again, you don't want the soap and the bug-melting chemicals in windshield washer fluid running through your w/m inj pump or your engine.

I recommend 90% alcohol/methanol, and 10% water for your optimal horsepower & octane boost. 60% water & 40% alcohol is cheaper, of course and perhaps slightly higher in pure octane boost (but octane does not = horsepower). However, you loose too many BTUs of heat with 60% water...and therefore too much horsepower is lost along with that reduction in heat! 60/40 might be fine for some ricer honduh or 'billy rustang owner (no offense) trying to put a hitch in his giddyap, but for an Mkiv Supra Turbo run 25psi+ of boost, it just isn't optimal.

Wait,this makes me confused...so if i run JUST race fuel,can i drive without the water/methanol injection kit(is it no longer necessary?
By race fuel what do you mean?Pure race fuel(found near the tracks) or fuel with high-octane number?

[pwpanas]

Originally Posted by iNs0mN1a

Wait,this makes me confused...so if i run JUST race fuel,can i drive without the water/methanol injection kit(is it no longer necessary?
By race fuel what do you mean?Pure race fuel(found near the tracks) or fuel with high-octane number?

Yes, yes, and yes.

For example, refer to "MotorSport 109™":
http://vpracingfuels.wb.gs/page46966...ection15555665

Here's a local supplier of race fuel in Romania:
http://www.autosolution.ro/news.php

...and one in the UK:
http://trackstuff.co.uk/VP%20MotorSport%20109.htm

[iNs0mN1a]

Originally Posted by pwpanas

Yes, yes, and yes.

For example, refer to "MotorSport 109™":
http://vpracingfuels.wb.gs/page46966...ection15555665

Here's a local supplier of race fuel in Romania:
http://www.autosolution.ro/news.php

...and one in the UK:
http://trackstuff.co.uk/VP%20MotorSport%20109.htm

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?

[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.