[Diy_efi] Cam duration & MAP sensors

[James Ridewood]

On Monday 03 June 2002 4:44 pm, you wrote:
Just a suggestion, Over here they are relatively cheap, especially when 
compared with power increases. anyhow on reflection perhaps more suited to 
European/Japanese high revving fours than American V8's .
> Jenveys on a V8 is a little expensive :-) When you convert the cost of an
> emerald into $ it becomes very expensive for an alpha-n system.
>
> Bill
> ----- Original Message -----
> From: James Ridewood <jimpr at lycos.co.uk>
> To: <diy_efi at diy-efi.org>
> Sent: Monday, June 03, 2002 10:16 AM
> Subject: Re: [Diy_efi] Cam duration & MAP sensors
>
> > On Monday 03 June 2002 3:28 am, you wrote:
> > I believe it is due to the large amount of overlap, this causes pressure
> > waves to be sent back up the inlet port giving the MAP sensor wildly
> > fluctuating signals therefore making it difficult to determine how much
>
> fuel
>
> > to spit in.
> >
> > One way around this may be to go for a self mappable ECU like Emerald
>
> using
>
> > throttle bodies from someone like Jenvey. This setup does not rely on MAP
> > (unless using forced induction) just throttle position vs RPM and is
> > currently very popular here in the UK.
> >
> > Hope this is of use
> >
> > J.
>
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