Future owner,few questions :)

[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.