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Old Mar 30, 2009 | 07:26 PM
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will 440s make 350 bhp? or will i need bigger ones?


thanks, phil
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Old Mar 30, 2009 | 07:33 PM
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Unlikely.
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Old Mar 30, 2009 | 07:41 PM
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so how much then for a set of 550cc
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Old Mar 30, 2009 | 07:45 PM
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Yeah, 550's would be better. I sold a set a month ago for £190. keep an eye out in the for sale section.
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Old Mar 30, 2009 | 07:48 PM
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thanks lads been a great help
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Old Mar 30, 2009 | 09:14 PM
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send the off to lateral performance have the flow uprated on them think he charges about £125
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Old Mar 30, 2009 | 09:21 PM
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Scoobypedia | Trusted knowledge for everything Subaru | Knowledge / Estimated Horse Power from Injectors
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Old Mar 31, 2009 | 01:02 PM
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im running 340 on 440's with headroom not running an uprated fuel pressure reg, if you have to buy a set of injectors then 550's, but if your running 440's already might not be worth it.

what turbo you running on your car? and what model is it?

Last edited by Tidgy; Mar 31, 2009 at 01:04 PM.
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Old Mar 31, 2009 | 01:11 PM
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Exactly how much headroom, it can't be much, what are your target AFR's? For 350, I'd go for 550's minimum every time.
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Old Mar 31, 2009 | 03:51 PM
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Originally Posted by bluenose172
Exactly how much headroom, it can't be much, what are your target AFR's? For 350, I'd go for 550's minimum every time.
my targets are between 340 to 360bhp! i have everything but the injectors so just wondering what size i need to run a safe car!! before i go for another trip up to andy forest
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Old Mar 31, 2009 | 07:04 PM
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what turbo are you running?
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Old Mar 31, 2009 | 07:46 PM
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ive got two turbos! the one on the car is a vf30 and the other is a vf43,
the car is a v5 sti,
ive got ported headers and up pipe, full decat exhaust with down pipe, front mount intercooler, its been remapped by andy forrest already
do you think this will make anywhere near 350 on 550cc injectors?

thanks for the help guys
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Old Apr 1, 2009 | 07:35 PM
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ok go in touch with andy f, i need bigger injectors!!

but does anyone know if the vf30 will make 340 350bhp ish??
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Old Apr 1, 2009 | 11:34 PM
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doubtfull, but for that power the 440's will be fine, my graph running vf34 and 440's on the standard regulator as well

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Old Apr 1, 2009 | 11:41 PM
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thanks tidgy!! thats what i was after!! id be happy with that to be honest!
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Old Apr 1, 2009 | 11:42 PM
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nee probs.

o something to bear in mind, its gerbox killing teritory

mine went when i was running lower power giving in the full bollox on tt mountain pass on the isle of man, ended p going down the ppg straight cut route

Last edited by Tidgy; Apr 1, 2009 at 11:43 PM.
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