On Tue, 2 Oct 2001, James Blumenfeld wrote: > > --- James Blumenfeld <[email protected]> wrote: > > Date: Tue, 2 Oct 2001 11:48:55 -0700 (PDT) > > From: James Blumenfeld <[email protected]> > > Subject: rpm dependent fuel enricher > > To: [email protected], [email protected] > > > > Brian, > > I built for my 87 gti 16v a rpm dependent fuel > > enricher. I used a RPM switch (also used for a > > shift > > light) from racer parts wholesale ($49.95). When > > the > > revs go over 4800 (adjustable) the switch gives a > > ground trigger; this goes to one side of the relay > > coil . The other side of the coil goes to the full > > throttle switch. When the revs are above 4800 AND > > the > > full throttle switch is activated the relay will > > trip. > > I then wired the relay so that when tripped it puts > > a > > 1500 ohm resistor into the circuit. I then > > paralleled > > this resister with a 10k potentiometer that is > > mounted > > on the dash (in one of those blanks by the radio). > > In > > this way I can tweak the mixture from the dash. In > > my > > car I found that the 1100 ohm value was too high. > > Also if you tweak the setting on the fuel > > distributor > > your 1100 ohm value may no longer be correct. (The > > red knob on the dash looks cool too). > > Back in the day (when I had hair) racers would > > put > > a potentiometer into the dash temp control so that > > they could adjust the mixture whilst racing. > > > > James Blumenfeld > > 87 gti > > (ex ITA, Firehawk, ProRally & enduro karter) > >
You want 1100ohms total, so 1500 plus whatever you have the pot dialed to would probably be too much. 1500-2000ohms seems to work best in my car. _____________ List Sponsor: http://www.netsville.com To remove yourself from this list, send mail to [email protected] with 'unsubscribe a2_16v' in the body of your message See us on the web at http://www.a2-16v.com Visit the 16V Homepage at http://www.gti16v.org
