Thread: what is the difference between grey and light blue injectors
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Old Sep 27, 2005 | 11:29 PM
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Billabong
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From: Northants
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Light blues (400's) good for a solid 380-390bhp; 410-ish bhp max at a push.

Greys (403's) good for 440 ish max. Dependant on turbo, headwork, fuel pressure and other factors etc.
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