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Old 04-04-2012, 10:42 PM   #1
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Turbo coversion questions..Fpr, fuel pressure,Injectors,afm

I am going start turbo'ing my r33 2.5na this week but have some questions on the above items really. Heres the spec i will be running.

Standard rb25 manifold drilled to take external gate
38mm tial gate. 10psi spring
cossy 4wd turbo
Braided oil feed and return
Full 3" custom turbo back exhaust
bosch 044 fuel pump
Huge fmic
ngk 8grade plugs
25det ecu with some kind of chip/map

With regards to fuel what can the standard de injectors cope with? or cant they cope at all with added booost. Again what about the fpr and fuel pressure?. Is it worth swapping over to a 25det fpr? What pressure is it on 25dets?

Does the afm need to be changed?

I have got a set of 32gtr injectors from my ca18 in the garage along with a z32 afm aswell if i can use either.

Cheers

Miles
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Old 05-04-2012, 10:03 AM   #2
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standard fpr is the same det to de,you will need r33 det injectors or bigger ,gtr injectors are top feed and wont fit without alterations but is possible,i run mine on standard de injectors when 1st converted but you need an adjustable fpr and run it about 60+psi,you are far better of using bigger ones,afm i used standard green label det/de there the same series 1, at over 450bhp,only use the z32 if your ecu is chipped/mapped for it
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Old 05-04-2012, 11:00 AM   #3
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Cheers dude. What power do the standard gtst injectors run out of puff at?
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Old 05-04-2012, 11:18 AM   #4
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Standard gtst injectors about 350 bhp
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Old 05-04-2012, 11:34 AM   #5
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Ooooohhh that's good. Will be plenty.
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