Rb25det Fuel System Maxing + Losing Vvti

[tarmac]

anyone know what power the stock injectors max out around on a rb25det?.

and how valuble is the VVTi. ive gotta rb20 ecu i can use to tune it up, but not sure about losing it. i know its activated by oil pressure, but is there also a 12v or 5v input which switches it on kinda like the vtec, cause if thats the case then i can use a RPM switch to turn it on.

[insu]

Yeah they max out at 100% duty just like every other car...

Sorry, I had too.

I've heard around 180rwkw is pushing it? Might be able to get that or a higher more safely with increasing the pressure regulator?

The stock fuel pump would also be an issue too.

Best to get your car on the dyno as you're upgrading its power levels to watch your injectors and pump.

[tarmac]

shoulda added, its gotta aftermarket pump. hmm damn sidefeed injectors, arent cheap to upgrade like em top feeds. must be able to get more than 180kw, rb20det's can get that

[paulr33]

r33 gtst injectors will max around 250rwkw

they will be on their knee's at this power level

you can get a bit more out of them by upgading the fuel reg to bump the rail pressure up a little bit

vct on the r33 is based on rpm, on until 4700rpm then it switches off

with it off the car drives like a bucket of poo, much less response and zest

[tarmac]

ok. so is it activated by a solenoid which is feed by 12v do you know?

[paulr33]

i think so

[tarmac]

do you have any idea where the 12volt plug is for it? cheers

[RRob]

It get's 12v from an ignition source and is activated by an earth driven by the ecu...