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Old 11-10-2006, 03:35 PM   #1
Token-Negro
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Member#: 81659
Join Date: Feb 2005
Chapter/Region: NWIC
Location: Snoqualmie
Vehicle:
2006 STI / 2010 FXT
Aspen White / Silver

Default To much flow?

So im wondering if im injecting to much flow with my current system causing a missfire im seeing. This is all without using a wideband to really dial this in, it hasnt come yet.
Motor is a 2.0 with gt30r
modded stock injectors 22.7psi @ 5700rpm 58% duty cycle
800cc
Jets Aquamist:
M7 450 ccmin @ 100psi
M4 250 ccmin @ 100psi

The math puts these guys in combo at 11 gph, .18 ghm
Sound about right?
Im running about 70/30 meth
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Old 11-10-2006, 09:51 PM   #2
hippy
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Location: florida
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2002 Impreza Wrx
Silver

Default

What are you using to control the flow? Ie- Are you at max flow all the time? What rpm range do you usually see misfire in?
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Old 11-10-2006, 10:14 PM   #3
Token-Negro
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Well usualy right around 5500 + - 500rpm and the flow starts at 10 and 15 psi of boost.
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Old 11-11-2006, 06:40 AM   #4
hippy
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Silver

Default

I don't really know what to say except that you're running a lot of injection(30+%). Maybe running less would help? Maybe running less petrol would help? Maybe this has nothing to do with your misfire? What are your mods? Maybe it would be a good idea to post a log?

peace
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Old 11-11-2006, 07:38 AM   #5
jaxscuby
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Location: S Ga / N Fla
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2002 USDM WRX
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Default

Aquamist recommends 50/50.
the math, to be sure, should look like this.

total injector flow x injector duty cycle x 10% = injector size

but Richard will reply as soon as he reads this.

but you second jet might be to big.
check the math, you should have less
than 200 cc.
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