Re: more boost

[pjwales@magicnet.net (Peter Wales)]

Don't put a voltage divider in the output of the pressure sensor. It will
advance the ignition and cause you problems as the boost comes up. If you
want to do it at low cost use a 4.3v zener and a 470ohm resistor.

There are 3 wires coming from the pressure sensor, 0v 5v and output. Use
your meter to see which is which. The output should be about 2-2.5 v with
the ignition on and the engine off.

Cut the output wire and now we have 4wires. 0v,5v, output from the sensor
and input into the board.

Connect the 470 ohm resistor to the output from the sensor and to the input
to the board.

Connect the zener (stripe end) to the input to the board and the other end to 0v

Now your computer will not retard after 12 - 13 PSI boost and all of your
safety circuits will still work

I'm $350 poorer :)


 
Peter Wales                    pjwales@magicnet.net
President Superchips Inc
Chairman Superchips Ltd        "Timing is everything"
Superchips home page with all the answers http://www.superchips.com