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Do I need bigger injectors?

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Old 28 September 2005, 01:07 PM
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Carlos13
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Default Do I need bigger injectors?

I have a UK MY99.

About to have VF34, STI8 TMIC, Walbro pump, SX reg fitted (already got tek3, 2.5" decat, filter).

Do I need a bigger set of injectors (550s?). I don't really have a power "target" as such, just as much as can be reasonably extracted from the above. Are my existing 440 injectors going to be a limiting factor? Would adding bigger injectors release more power when the car is remapped, or isnt it that simple?

I am trying to get a good power increase without spending an absolute fortune, I guess injectors plus fitting is going to be around £400 so only want to take the step if it is really worth it.
Old 28 September 2005, 04:00 PM
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David MY99
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An VF34 can't outmax your 440cc injectors. With 1.5 bar of boost and a descent A/F would get you to 90-95% IDC
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