mk4 performance

[pwpanas]

Originally Posted by kylej

Okay I decided to go about this a different way... I live in Canada and imported a JDM mk4 Supra, twin turbo. I want to know where to start for upgrades, I got deep pockets as I've been working in the oilfield for the past 6 months. I know all about BPU and APU.

I'm thinking;
Full 4" exhaust for max power
Intake
Greddy BCC (Boost Cut Controller)
Boost Controller
Blow Off Valve
Hosing (Can't stand when stock hosing cracks and you get leaks and shit)
Turbo Timer
Intercooler
Cam Gears? (5 bolt)
Cam Shaft?


What about things like injectors? I am tempted to just wait and put in a whole twin fuel system for 2000 instead of just injectors?
I'm also aware about things called Plug n Play? They are ECU upgrades or fuel system upgrades that are already set to go? Is this a good idea or is it better to do a full installation instead of this instant stuff? As well as intake manifolds? What about other things like fuel regulators or different o2 sensors, I heard the stock ones aren't very accurate. I haven't looked around to compare brand yet but if I am spending this amount of money on the car I am going to put the best of the best stuff in it, maybe not a 2000$ air filter, but I'm not going to put in wal-mart brand stuff. If anyone can answer any of these questions let me know, as well as brand suggestions.

Thanks, Kyle

PS: I'll posting pictures of my baby as soon as it gets here

I'd recommend we start with your power goals. That way we know you're not wasting $$$ on parts that are only necessary above your goal (eg. the 4" exahust, injectors, and/or aftermarket cams). It'll also keep you from buying parts that only fit with bpu, and then having to sell them later when you go APU - if your goal requires APU, best to just get organized to do that in the first place.

If you want the exhaust for show (even if it's not necessary for your power goal), I absolutely understand. No harm in looking & sounding bad@ss.

The oem fuel pressure regulator is very accurate. However it is not adjustable, and it doesn't flow enough for an aftermarket fuel system with multiple/larger fuel pumps. The oem O2 sensors are plenty accurate too, and work fine with the oem ecu. However, they aren't sufficient for "wideband" a:f tuning.

Plug and play is just a term for any product that has OEM Toyota electrical connectors on it. This saves you and/or your installer time doing wiring when installing aftermarket electronic components.

Btw, the only hose I know of that cracks is the hose between the EGR valve and the EGR vacuum modulator. You'll also need to replace the hoses around the BOV when you replace it. If you want to do all of the other hoses too, to have a great looking engine bay, I understand. Silicone hoses withstand heat the best.

Lastly, don't forget about a boost gauge, and a budget for race fuel. Oh, and an aftermarket downpipe will make you waaaay more power than an aftermarket exhaust at the BPU level.