The pulsewidth (time the injector is squirting) is predetermined. Think of
it this way. Lets say you turn you hose on halfway, and open the nozzle for
2 seconds. Then lets say you turn it up to full blast (higher pressure in
the line) and hold it open for the same 2 seconds. You'll shoot
significantly more water. So he can richen his car by turning up the line
pressure. Don't know that its the best idea to do it at the track unless
you have a wideband O2 sensor to carefully observe the effects its having on
your engine.
-Chad Sullivan
----- Original Message -----
From: "George Freeman" <[EMAIL PROTECTED]>
To: "'The Rex list'" <[EMAIL PROTECTED]>
Sent: Sunday, December 22, 2002 9:52 PM
Subject: CRX: Fuel mixture question
> I saw a guy at the track making adjustments to the fuel pressure
> regulator claiming it made the car run better due to richer/leaner
> mixture. So my question is, how does the fuel mixture relate to the
> fuel pressure regulator? I thought the fuel mixture (or fuel map) was
> preset by the ECU, correct?
>
>
> George
> '89 DX-Hybrid-D16Z6, 127k miles
> "Seats, Suspension, Engine, MSD, next=heat reduction!"
>
>
