Rb20det Injectors

[EVL032]

at wat rwkw do the standard rb20det injectors max out when also using a rising rate fuel reg? Also with the powerfc does this help fuel wise?

[Sydneykid]

270 cc's in a 6 cylinder = 270 bhp

270 bhp = 150 rwkw

That's at standard fuel pressure ie 36-38 psi

It doesn't matter what ECU you use, the max flow of the injector is still the max flow of the injector.

You can increase the fuel pressure, but you have to be carefull as the standard fuel hoses and clamps are not designed for higher than standrd fuel pressure. That's when they are new, R32 hoses and clamps are far from new now.

Around 45 psi gives a 10% increase in flow, so ~165 rwkw is the most I have seen out of standard R32GTST injectors. Do a search and you will find plenty of info on using GTR (444cc) injectors in RB20's. It is probably THE most common injector upgrade.

cheers

[EVL032]

270 cc's in a 6 cylinder = 270 bhp

270 bhp = 150 rwkw

That's at standard fuel pressure ie 36-38 psi

It doesn't matter what ECU you use, the max flow of the injector is still the max flow of the injector.

You can increase the fuel pressure, but you have to be carefull as the standard fuel hoses and clamps are not designed for higher than standrd fuel pressure.  That's when they are new, R32 hoses and clamps are far from new now.

Around 45 psi gives a 10% increase in flow, so ~165 rwkw is the most I have seen out of standard R32GTST injectors.  Do a search and you will find plenty of info on using GTR (444cc) injectors in RB20's.  It is probably THE most common injector upgrade.

cheers

<{POST_SNAPBACK}>

iam at 180rwkw at the moment using remap ecu (still not right) t3 high flowed fmic, fuel pump, rising rate fuel reg and all the other usuals, so mmmhhh neone else

[Sydneykid]

iam at 180rwkw at the moment using remap ecu (still not right) t3 high flowed fmic, fuel pump, rising rate fuel reg and all the other usuals, so mmmhhh neone else

<{POST_SNAPBACK}>

What's the fuel pressure?

What's the injector duty cycle?

Tried it on any other dyno's? Maybe this one is a little happy.

cheers

[EVL032]

dont know either of the two wuestion i know duty cycle is getting high though as starting to get into a fuel cut now and then,

had it on two dynos, made 170rwkw before z32 and remap made 180 after so i know its above the 150rwkw max figure though

but dunno how much is left in the tank though, as for extracting fuel

What's the fuel pressure?

What's the injector duty cycle?

Tried it on any other dyno's?  Maybe this one is a little happy.

cheers

<{POST_SNAPBACK}>

[nemz]

ive heard of 220rwkw with std injectors

[Cubes]

You really should use the search button, this has been covered many times.

Mine hit 92% at 176rwkw with an external bosch pump.

The std AFM was hitting 4.98v, the Z32 was hitting 4.2v.

In order to hold a 12:1 AFR ~500rpm after power starts dropping off injectors hit 100%.

At the safe 80% I would consider it very close to the figures SydneyKid has suggested.

I've seen 243rwkw out of stock injectors (clint32) it was running some serious fuel pressure though, it went on to run a 12.8 with a healthy mph. He was origionally trying to run the RX7 IV injectors however Martin had issues getting the rb20det to idle with them and the remaped ecu.

Really depends how happy the dyno is.

We recently had a dyno day at the dyno I use.

Many were rather unhappy when their car made less power than their own dyno, in one instances 30rwkw (down from 300+ to 280rwkw) and another ~20rwkw less.

Edited December 13, 2005 by Cubes

[jvs007]

i got 206rwkw with standard injectors, 910 pump and i think its a remapped ecu. highest i went was 211 but that was getting dangerous so dropped it down, dont know duty cycle.

i have also heard upto 220rwkw but then again sum ppl say 170rwkw dont know who to beleive, then theres the problem of consistancy in dyno's which pretty much leaves us nuthing to go by.....

[qr4pain]

r32 gtst

fmic

t3/4 hybrid

exhaust + dump from turbo

pod filter

bosch 44 fuel pump

was running turbosmart valve (still spiked, verified on dyno) set @ 16 psi

was making 195 rwkw with std injectors and donnon tuned ecu, afr's healthy

12.7

fitted avcr 21/12 boosted as far as 21 psi no pinging, still 12.7 afr, injectors @ 100% by 1/2 throttle. 16psi same results as turbosmart injector @ 100% by 3/4 throttle.

boost now 14.7 (1 bar) injectors app 89% even at full throttle made 175rwkw.