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au injectors and 300 kpa reg? 

 

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 Post subject: au injectors and 300 kpa reg?
Posted: Wed Nov 13, 2013 4:56 pm 
Tyre Shredder
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Hi fella's,have been having starting and idling issues with my XG-ute, so have decided to upgrade my injectors with 20 lb au injectors,question is I have a 300 kpa xr6 regulator here but will it make any difference without a fuel pump upgrade as the engine is stock besides pacemakers-2 & a half " sports exhaust with a large pod filter and thermo fans,any input much appreciated,ta in advance,John.

 

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XG ute now powered with DOHC-BARRA 182/Tiger extractors/20% Underdrive and BA 4-SPEED + Tiptronic shifter
Mods to come AU XR6 3:45.1 LSD/New wheels and full respray
the-garage-f53/project-xg-fpv-dohc-barra-182-t128753-60.html

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 Post subject: Re: au injectors and 300 kpa reg?
Posted: Wed Nov 13, 2013 7:19 pm 
Getting Side Ways
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On a stock engine, the 300kPa reg won't do anything. Have you installed the AU injectors already? I found the engine ran slightly smoother with them (but then the original injectors I had could have been partially blocked... :roll: ). Have the spark plugs, fuel filter and fuel pump ever been replaced?

 

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AU2 XR8 with Raptor VL, ported Yella Terra GT40P heads, Scorpion 1.6 RRs, XE264HR-14 Comp Cam, ceramic coated Hurricane Headers, 60lb injectors, Walbro 255, 200cfi cats, 3" exhaust & Snow Performance water methanol injection

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 Post subject: Re: au injectors and 300 kpa reg?
Posted: Wed Nov 13, 2013 8:24 pm 
Tyre Shredder
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Hi,yea replaced plugs fuel filter,just got the injectors in this evening-made big difference in mine but the old injectors and ports were full of dirt and carbon,id say thats why they've made a big difference,better throttle response too,I havnt changed the fuel pump thou-do think I should and if so standard or should I go with a bigger pump?

 

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XG ute now powered with DOHC-BARRA 182/Tiger extractors/20% Underdrive and BA 4-SPEED + Tiptronic shifter
Mods to come AU XR6 3:45.1 LSD/New wheels and full respray
the-garage-f53/project-xg-fpv-dohc-barra-182-t128753-60.html

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 Post subject: Re: au injectors and 300 kpa reg?
Posted: Thu Nov 14, 2013 12:42 pm 
Getting Side Ways
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Age: 54

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Gallery: 22 images

Ride: AU2 XR8 ute & 91 EA bitsa

Location: Melbourne
VIC, Australia

johnnyeHCF wrote:
I havnt changed the fuel pump thou-do think I should and if so standard or should I go with a bigger pump?


Stick with the standard fuel pump unless you're planning to add a supercharger or turbo.

 

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AU2 XR8 with Raptor VL, ported Yella Terra GT40P heads, Scorpion 1.6 RRs, XE264HR-14 Comp Cam, ceramic coated Hurricane Headers, 60lb injectors, Walbro 255, 200cfi cats, 3" exhaust & Snow Performance water methanol injection

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