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This is why you need FUEL RETURN SETUP!

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Old 11-07-2009, 11:15 PM
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Default This is why you need FUEL RETURN SETUP!



this was chad "soflotc" car tuned on aem standalone.

900cc injectors
"NO RETURN FUEL SETUP"

as you can see on the top of the map it starts to flatline, this is because injectors are maxing out at only 19 PSI.

I had to use meth to aid in fueling past 18 psi.. so we stopped it at 19 psi with decent amount of timing..

The car will hit the dyno on monday!

Stay posted
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Old 11-07-2009, 11:24 PM
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chad im disappointed... all that work and you didnt do a return setup??? shame... lol
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Old 11-08-2009, 12:16 AM
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In for the results.
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Old 11-08-2009, 12:32 AM
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Car came to me, 20psi 10afr. When it wasint 10afr it barley spun 3rd..

now with raised redline to 8000 rpms. the cars roasts the tires from 50-100!

Id say were making pretty good power

Seems like the CC throw out bearing for twin disk is giving up though
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Old 11-08-2009, 12:33 AM
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im comeing back with aem tru boost and p tuning exhaust asap! gotta get this done before i loose my licence on dec 1st! lmao
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Old 11-08-2009, 12:51 AM
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Is he on your old AEM computer?
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Old 11-08-2009, 12:55 AM
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yes, he bought it
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Old 11-08-2009, 12:56 AM
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Yeah you'll have to compensate a bit on the fuel map because even though you also had 900cc on your map, you had a 1:1 FPR which he doesn't have.

I'm interested in seeing how it all turns out. Good luck Mike.
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Old 11-08-2009, 01:00 AM
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Originally Posted by B_Real45
Yeah you'll have to compensate a bit on the fuel map because even though you also had 900cc on your map, you had a 1:1 FPR which he doesn't have.

I'm interested in seeing how it all turns out. Good luck Mike.

huh? The cars tuned already bro!
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Old 11-08-2009, 01:01 AM
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lol i'm talking about the results. I know you tuned him - you said so in your first post. 19lb making good power cuz it's spinning tires and all that.
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Old 11-08-2009, 01:04 AM
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Originally Posted by B_Real45
lol i'm talking about the results. I know you tuned him - you said so in your first post. 19lb making good power cuz it's spinning tires and all that.

Ok! long day! When he had the meth installed come one cut all the lines at a angle! Soon as we poured meth in.. hit the test button, meth every were! Some people just dont pay attention to what there doing

yea my twin fuel pump setup and larger fuel rail deff helps!
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Old 11-08-2009, 01:11 AM
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long day..... TO SAY THE LEAST.. leaving mikes house my CC twin disc decides to take a ____.. now we know CC fails to the max. And im just cursed. w.e spinning 50-100 in 3rd gear only is quite amusing lol.

Last edited by SoFloTC; 11-08-2009 at 02:30 AM.
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Old 11-08-2009, 03:15 AM
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Mike, you figure out that fuel pump fuse issue on your car? BTW, I've still got the reservations for the dyno on Saturday coming up.
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Old 11-08-2009, 03:20 AM
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i got a return fuel system. but is this the reason why you need a return fuel system? this sounds more like a reason to have a rising fuel pressure regulator so that your fuel pressure rises with boost pressure to fight the push forced air from the turbo pushing against the fuel from the injectors.

oh, and competition clutch just seems like a complete failure on all levels. atleast with scion clutches.
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Old 11-08-2009, 03:23 AM
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He's more or less referring to the ability to throw in ALOT more fuel with a return style setup. You are very limited (as seen above) without a return. Of course the pressure will need to go higher like you said but overall pressure alone won't do the trick. Two pumps definitely makes fuel a non-issue unless you auto-x on less than half tank or something lol.
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Old 11-08-2009, 10:31 AM
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you cant run a 1:1 regulator without a return setup.. lol
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Old 11-08-2009, 11:39 AM
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^^ exactly
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Old 11-08-2009, 01:41 PM
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yes I am running at 85% duty cycle with 900 cc injectors running 60psi fuel pressure on 13psi 25psia actuall so 11psi sea level running e85 with a return set up and 510lph of fuel
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Old 11-08-2009, 02:19 PM
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do you have a 3d map on yours on your old setup to compare to this?

some mod to increase VE will also help that plateau on his fuel map, something to make the car flow more air on top end, but yeah fuel setup first.. no point flowing more air if you cant force more juice lol
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Old 11-08-2009, 02:29 PM
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My car


20PSI sc6265 max duty cycle 70%
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