300whp Reliable 375hp To The Crank

[Draconis]

Okay, I know I've asked a bit of questions earlier and got a firm understanding of what it takes to get 300 whp reliably... but as I go on up here in the States, I get lots of people telling me lots of things I need to do in addition to what I had in mind.

So I will defer the ultimate decision making to you Aussies who know these engines better than anyone that I know of who are in the States. So here it goes:

I have a S12. It has a RB20DET in it utilizing the RB20 tranny/gearbox. Mods at the moment is a FMIC and a custom 3" turbo back exhaust with no cat. and a HKS Carbon Titanium muffler. For piggybacks, I have the Apexi Neo and GReddy Type S boost controller installed. I also have a Walbro 255 to power the engine since the stock S12 fuel pump would never have been able to.

What else do I need for 300whp reliably.

What I do know I need are the following:

larger injectors (going for the GTR stock injectors, 440cc)

Z32 Maf

better/bigger turbo than the stock ceramic one (I've been told 2 different types from members on this forum so I'm confused. I was thinking a T3/T4, but have been told otherwise.

Metal head gasket

What else, or will this cover it all? Much thanks in advance.

Cheers

Colin

[Draconis]

Just wondering as to why no one has seemed to have responded but lots of views. RB20 not worth it? Or am I already on the right track?

[Bo0oSt]

if you look in the forced induction section under the rb20det section there heaps of upgrade that members have done to there rb20 det. just find the one with the righ tout put and look at what they have done to reach that out put

[bazr33]

Hey man

I have 320rwhp at the treads but i have a rb25det. So probably won't help you

but i'll give a list of what i needed,

Apexi Power fc

AVCR Boost controller

3" exhaust with hiflow cat, 3" split dump to cat

hiflow r33 turbo, steel wheels set on 18psi

555cc injectors

Nismo fuel reg

Turbosmart BOV

Apexi super intake pod

Apexi hard intake pipe

Z32 afm

Walbro fuel pump

My Acturator on my turbo is restricting me as it originally was only suited to deal with 7psi. So it hits 18psi then drops off to 15psi.

So im getting a adjustable actuator for it.

But i believe with the mods you have stated, and a sufficient amount of boost if your going to use a t3/t4 turbo, it could hit it.

A thicker metal head gasket would help lowering the compression, and wind up the boost a bit more.

I would also consider cams later on, doesnt the gtr cams fit into the rb20's?