Injector Duty Max

[wsln33]

Was curious as to what sort of power figures the factory injectors are good for in the r33 gts-t

[Cya 33]

We have had our injectors around 200 rwkw using the power fc and return line fuel regulator, how ever you would expect them to be around 90%.

Most of our skylines have upgraded to 555-740cc units.

Cheers Cya33

[2BNVS]

yer same with me i had sard 550cc fitted when i cracked a touch over 200rwkw.

ben...

[benm]

If you are nearing 100% just move to WA and the problem is magically solved

[R31Nismoid]

209rwkw and i was outta juice with my RB25 injectors.

depends what ECU your using

[SeriesIIGTST]

ok, i'm getting sick of reading the "lets pile shit on WA cars". I for one can tell you that i'm on stock injectors, and at 12psi pushing 220rwkw or thereabouts confirmed through numerous runs and several dynos. At that power level, my injectors are at something ridiculous like 95% even with a rising rate fuel regulator and a 450HP pump. Every time I wind the boost to this level, i get nearly exactly the same result on my PFC and dyno printouts. Not all WA cars have magic power figures from special dyno's with miracle stock fuel systems. I have a receipt from my tuner (Hyperdrive ) after my powerFC tune that says "Recommend bigger injectors".

Get over it already.

[benm]

220rwkw eh, my car was starting to lean out at 198rwkw but that was with stock injectors and ecu (a powerfc might fix this) and a Bosch 040. It might be that my injectors are running out of puff, not a fuel issue.

[abcent]

highest power figure Ive made on stock injectors is 248kw on a dyno dynamics dyno at Daltons automotive (not in shoot out mode). couldnt tell you what the cycle is, the microtech i'm running doesnt read in percentages just milliseconds. also running a malpassi adjustable rising rate fuel reg and bigger fuel pump.

I know this kind of power isnt safe for stock injectors....cant imagine the spray pattern being very good, which equils damage.

Nismo injectors arrived a few days ago, so.....no longer a consideration.

I always had the intention that once I achieved beyond 200-210kW i'd replace the stock injectors as after this point there reliabitity is questionable. Just took me about 6 months cauz the damn things are so expensive.

[cameron]

If you are nearing 100% just move to WA and the problem is magically solved

Who needs injector to spray just leave them set open :wassup:

I wouldn't risk using standard injector's over 200rwkw's for safety reason's. I'd get a set of Nismo 740's if you looking at upgrading the turbo later, or 550cc should fine for 300rwkw's.

Fuel pump should be first on the list it'll max before injector's.

Jun

[R32-GTS]

Saw a rb25 last week with stock injectors and ecu do 350rwhp .

[paulr33]

im going to call bullshit

what a/fs and how laggy was it

i couldnt see the stock ecu being awesome with 260rwkw

i hit 92% injector duty with 172rwkw and your saying is getting 100rkw more ?

sounds nice and safe

[R32-GTS]

will pm u the dyno sheet with afr's. And it is quite laggy

[paulr33]

yeah why would u want that power with stock ecu, got me buggered?

[R32-GTS]

power fc gone in and getting tuned tomorrow night. will post up results.

[bigcarl]

210rwkws was my stock injector limit, running malpassi regulator now.