T3/T4 advice - Toyota Nation Forum : Toyota Car and Truck Forums

Mr2SlOw... · 12-11-2005, 08:54 PM

Ok my plan for my 2 is to drop in a t3/t4 57 trim. My goal is to reach around 350whp.

I no I will have to change my fuel pump (supra pump since it fits perfectly and supports it), 550cc injectors, intercooler, adjustable fuel regulator (11.5:1).

Also, how much psi can i safely handle with this setup?

I also have a K&N FIFK and 3 in turboback exhaust. Does anyone no what i can expect with this set up?

I also need advice incase im missing anything.

JekylandHyde · 12-12-2005, 05:09 AM

Adjustable FPRs do not set your fuel at 11.5:1. They merely set your fuel pressure and ass pressure as you build boost. To get your fuel to 11.5:1, you are going to need something to tune the car with (black boxes or EMS).

350rwhp on 550s is pushing it, but it can be done.
I did it

but I was using water injection and race gas.

I would recommend the Walbro pump over the Supra.

How much boost can you run? That depends on how solid your engine is and how well set up your car is. I ran as much as 24 psi on my T3T4 on a stock engine.

***MRQtwinturbo*** · 12-12-2005, 07:19 AM

i am running a setup similar to what you are looking for..but my t3/t4 is a 50 trim/.63 AR...motor is built bottem end (stock cams) and minor head work....but i'm running 680cc top feed injectors and HKS F-con..i'm with jekly...you will be pushing the limits of the 550s and you definitely need some sort of engine/fuel management...you should look into getting some cams and also an upgrade IC and find a compentent tuner...

Drifting Dane · 12-12-2005, 12:53 PM

Quote:

Originally Posted by JekylandHyde

They merely set your fuel pressure and ass pressure as you build boost.

He meant adds pressure

(at least i hope so)

Mr2SlOw... · 12-12-2005, 01:56 PM

What size injectors would u reccommend? I am planning on getting a aftermarket IC. Will I be able to tune it with the help of S-AFC or should i save my money an get it done? I dont plan on using more than 18psi. Would i be able to handle that? my engine is still in good condition with no major problems.

***MRQtwinturbo*** · 12-12-2005, 02:09 PM

^^save for an EMS if you want some sort of reliabilty....that magical 300rwhp mark on black box tuning is dangerous IMO...you can only trick the stock ECU so much....