How manage to get more horsepower on 3s-gte ? Options

[Iceman22]

Hello. I have 3s-gte with a turbo boost controller, turbo timer, fuel cut defender and a blow off valve. On 1.1bar on the boost controller i have around 300hp, and when I don't use it then it has 260hp.
This is really enough power, but why not try some more if it is possible? What parts could do to manage for example 400hp? Is it possible? My friends told me a boost fuel pump, camshaft and chip would help much, is that right?

[_Jim_]

stand alone, ecu, W2A Intercooler, and a turbo that can handle more(20psi IMO) _jim_ going for 400+Whp talk to his smelly face

SMELLY FACE! WTF IS THAT ABOUT LOLOLOL

It seems as tho he is referring to his GT4. So he is already running a W2A IC or FMIC, either of the 2 would get him to his 400HP mark safely. And considering he said he made 300hp at 16psi (1.1bar) it seems as tho he is referring to BHP, not WHP.

If you are still on the stock ST205 W2A IC setup tho, I highly recommend in upgrading to a stronger pump, and wiring it to run constantly when the car is on. The stock pump will start hindering you very shortly after 325BHP

As for the Fuel pump, if you haven't done so already...I would upgrade to a Walboro or Supra TT pump....as this will give you the "bump in fuel" that your friends were talking about. It is commonly overlooked in GT4's as they come with a much better factory pump then we get, so we HAVE to upgrade to a Walboro 255 or Supra TT fuel pump immediately when we swap.

If you are looking for 400BHP, all you need is a bigger turbo. You have plenty of fuel left for 400bhp with the stock 540cc injectors and Walboro 255 or Supra TT pump. I made 330whp at 21psi (1.44bar) which would be around 380bhp figuring 15% drivetrain loss on the FWD LSD transmission, all still on the factory CT20B.

At 24psi (1.65 bar) I made 342whp, which would be right around 400BHP...and my AFRS were still in the mid 10's.

If you are going to turn the boost up past 18psi, I would recommend getting water injection as an added safety precaution