aucky Posted September 18, 2015 Share Posted September 18, 2015 Hi can anyone tell me what size injectors the wrx hatchback 2.5 uses and how do i no what turbo it has on plz,does it say somewere on the turbo which it is? Thanks [emoji15] Sent from my GT-N7100 using Tapatalk Quote Link to comment Share on other sites More sharing options...
Xander Posted September 18, 2015 Share Posted September 18, 2015 You will have the TD04 turbo same as mine. It will say on the turbo but you will end up removing it to see I think. I am not sure on the injectors though. You planning some nice upgrades then? 1 Quote Link to comment Share on other sites More sharing options...
aucky Posted September 18, 2015 Author Share Posted September 18, 2015 I have a set of blue 550cc injectors sat in man shed and was thinking of a vf35 turbo.would need a uprated fuel pump,dont no if the blue injectors are same as what are fitted as standed.sti have 550cc pink injectors i was told,what diffrence does the colour make,am not very teci with stuff like that. Sent from my GT-N7100 using Tapatalk Quote Link to comment Share on other sites More sharing options...
Gambit Posted September 18, 2015 Share Posted September 18, 2015 Colours don't really mean anything mate. [emoji3] 1 Quote Link to comment Share on other sites More sharing options...
BoozyDave Posted September 18, 2015 Share Posted September 18, 2015 the blue ones are 380's (classic), 420's (newage) and 560's in the hatch not sure if the vf35 is the best turbo for the 2.5, maybe the vf43 from the 2.5 STI or td05 18 or 20g would be better suited, should be good for 340-350 bhp 2 Quote Link to comment Share on other sites More sharing options...
Tidgy Posted September 22, 2015 Share Posted September 22, 2015 Sc36 will do well. Hawk wrx was 500iirc so guess there the same 1 Quote Link to comment Share on other sites More sharing options...
aucky Posted September 22, 2015 Author Share Posted September 22, 2015 So with a vf43 or sc36 would i need bigger injectors n fuel pump. Sent from my GT-N7100 using Tapatalk Quote Link to comment Share on other sites More sharing options...
stants Posted September 22, 2015 Share Posted September 22, 2015 Fuel pump yes as for injectors best off speaking to sc,any ideas waht the injector duty maxes out at ? Quote Link to comment Share on other sites More sharing options...
aucky Posted September 22, 2015 Author Share Posted September 22, 2015 Fuel pump yes as for injectors best off speaking to sc,any ideas waht the injector duty maxes out at ?I have no idea about injectors.to be honest i never even thought about injectors and stuff like that till i got addicted to subaru's [emoji6] .it was carbs when i last did machanics on my cars lol Sent from my GT-N7100 using Tapatalk Quote Link to comment Share on other sites More sharing options...
BoozyDave Posted September 22, 2015 Share Posted September 22, 2015 the std fuel pump is 255L, so I would only replace due to age/ware (for the sake of £40 it's worth doing). The fuel pressure reg is what controls how much fuel 'could' be put into injectors. Duty cycle dictates how long the injectors are open, the fuel pressure can increase how much goes in. max duty cycle is about 98%, std fuel pressure is about 3 BAR. if you can increase fuel pressure to 4 BAR the duty cycle drops I've got a spare fuel pressure reg if you need one Quote Link to comment Share on other sites More sharing options...
Xander Posted September 23, 2015 Share Posted September 23, 2015 Take a look on race dynamics website he has upgrade paths for most scoobys not our hatches but gives an idea of power to upgrade expectations -- I make Films, Websites and social media for people 1 Quote Link to comment Share on other sites More sharing options...
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