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Re: [turbobike] carburation vs fuel injection

Lorcan Parnell (lorcan@globalnet.co.uk)
Mon, 19 Apr 1999 22:05:57 +0100

Hi Christer, I hope you are enjoying this as much as I am! hehe...


>To make full use of a EFI setup you would really need to know what You are
doing
and use all types of sensors, otherwise it will be more primitive than any
carb
setup.
and carbs aren't primitive? Only been around 100 years...

>I know what a MAP sensor is ,I work with dynoing engines at a engine
research
center.
Then you should have kicked my ass on this discussion by now - I'm an
amateur!

>Yes some sofisticated EFI“s can adjust for different flows but then You
would
need
a map sensor in every inlet rubber, on a carb setup the stronger signal will
just pull
more fuel in that carb, nothing of major concern but nevertheless.

No, you could just adjust the fueling/ignition on each cylinder against a
brake dyno.

>Yes Your van have EFI (to clear emission laws) but a Yamaha R1
(who makes 150hp/litre) doesent , understand My point?

Yes, now I do.

>You may be able to buy an ECU for £650 and injectors for £15 ,but I doubt
that John Doe can walk into an speed shop and get a nice EFI setup for that
amount.

I AM that John Doe! No, I didn't walk into a speed shop, i just hunted
around.

>Besides you need alot more than ECU and injectors, throttle bodies and a
box
full of
sensors ,wires ,not the cheapest stuff around. The carbs are already on the
bike
True, but you are coming back to cost, the one point I concede.

>How fast do I wanna go? well the old setup easily made 200mph and the new
one
is more powerful. As I said in an earlier mail Mark Moisan out of texas made
429hp
...and Terry Kizer made 494 on his EFI ZX11...

Cheers

Lorcan