Stock 450cc injector Question

[RockSolidGST]

What is the max. Boost that is safe to run on these injectors from experance...



( all on way , So no loggs yet , im just curious )
Turbo is Evo III Big 16g
aem wideband
logger
safcII
fmic
intake
3'' turboback
mbc
etc
etc

 

[steve]

You need to log your injector duty cycle and decide how high your willing to go before upgrading them. Increasing your base fuel pressure will give some headroom.

If you have any boost leaks you won't be able to run as much boost before maxing the injectors out.

On my 1G I was hitting 100+% IDC at 14psi on a B16G with the stock 450cc injectors. Most sources recomend not going over 80% IDC before getting bigger injectors.

Steve

 

[tstkl]

I got 21 lbs out of my 14b and with an afr of like 11.5:1 (guess what kinda gas I was using) with 450's and a base fuel pressure of 46 (rather than the stock 37) so I would say, much, much less than that with an evoIII. Just start at 10psi and watch your IDC's and try and stay below 80% idc. I was running like 94-96% idc, which is why Im getting larger injectors.

 

[chicagoavenger]

What is the max. Boost that is safe to run on these injectors from experance...



( all on way , So no loggs yet , im just curious )
Turbo is Evo III Big 16g
aem wideband
logger
safcII
fmic
intake
3'' turboback
mbc
etc
etc

everycar is different some 10psi some 20psi with fpr and race gas. get a logger and log and see what your car is happy with

 

[TSIfreek]

The other day I hit 120 DC at 13 psi on 450s

 

[RockSolidGST]

I was told that the ODB II logger Can not Log Duty Cycle? Is this true , I havn't hooked everything up yet the car is completly apart... haha ...

If So great , If not , im bassiccly out of luck?

 

[steve]

IDC is derived even on loggers that display it directly.

IDC = (RPM * IPW) / 1200

If the OBD2 logger will give you Injector Pulse Width and RPM you can figure IDC.

Steve

 

[RockSolidGST]

Thanks guys.... Car is still in the process of being put back together... Waiting on the turbo and mani now... Will update to let you know how things go

 

[nuclearr]

Before my katrina took the life from my GSX i was bosting 16 psi on a small 16g and modified air box with a k&n filter no onther mods than that

 

[RockSolidGST]

Well I just solved that problem.... Just bought 550cc's thanks though guys =)