What size injector?

[H Villemure]

I am sorry to reply to this in metric system. If the engine were a Japanese
one, as a way of a for instance a Toyota =), I would say 440cc/min. injectors
would do fine. What is cool with good old AFM's is that if you run an AFM
instead of MAP sensor and programmed EFI you can match the % increase of your
injectors volume delivery to the % increase of a bigger AFM without having to
tell your EFI computer. Now, that's for ignoramuses like me. 

The other way around is that, like I stated a few days earlier, I would like
to know how to fiddle with FI programming and mixture curves, and know
absolutely nothing from the word go to this kind of modifications. Any suggestions?

Roger Feingold wrote:
> 
> The numbers for injector size seem all wrong, maybe a FI expert has some
> thoughts?
> Original engine was 2.8L V6, 140 HP, 6000rpm redline, factory injector flow
> 16lb/hr.
> New engine 3.4L V6, 220-240 HP, 6000rpm redline, size injector for displacement
> or HP? Taking 12 F/A ratio, 6000rpm, and 80% duty cycle, seems to result in
> a large
> flow rate.
> 
> Anyone got a moment?, Thanks.
> 
> To answer Bruce's question, it's naturally aspirated.

-- 
Helene V.
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