CIS flapper meets the Microchip

["Graydon D. Stuckey" <graydon@apollo.gmi.edu>]

On Sat, 1 Jun 1996 STEADIRIC@aol.com wrote:

> >They can be had from Haltech or Electromotive for around a grand.
> 
> The only problem with those setup's are that they really are designed to 
> work with a EVEN number of cylinders.......  Which kinda leaves us 5 
> banger pilots SOL
Eric,
	(you _knew_ I couldn't leave this alone didn't you?) :-)

	Not really.  In previous testing, the difference between 
sequential and simultaneous injector firing was very small, and the 
difference was primarily in idle smoothness, emissions, and maybe a 
couple percent in absolute power.  That compromise given, then, a 
simultaneous firing system can quite easily be adapted to an engine of 
any number of cylinders.  Since it is relatively easy for the oems to 
implement sequential, then they do it.

	I would also submit, that IMHO, even a crude simultaneous firing 
EFI system is light years ahead of the K-jet mechanical fuel injection in 
the older Audis.  (BTDT on a VW 2.0 litre)

	Now, when we get computers strong enough to adjust the mix and 
the timing for every cylinder individually (requiring much better sensors 
than we have currently also) then, the sequential system will really 
start to pull ahead of the simultaneous fire system.

Later,								
Graydon D. Stuckey								
graydon@apollo.gmi.edu								
Flint, Michigan   USA
'86 Audi 5000 CS Turbo Quattro, GDS Racing Stage II