how to make check valve to fool map sensor?

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03-05-2007, 08:07 PM

#11

low_pt

0.5 BAR

Join Date: Jul 2006

Posts: 82

Re: how to make check valve to fool map sensor?

Hahn Racecraft makes a circut which prevents positive MAP signals from going to your ECU. It's a fairly universal installation (2 wires) for MAP based cars, and they have wiring diagrams available. Call them or check out this link:

http://www.hahnracecraft.com/auto/engine/fuelmapper.htm

03-06-2007, 07:31 PM

#12

m0nee

1.0 BAR

Join Date: Jun 2006

Posts: 463

Re: how to make check valve to fool map sensor?

I might be wrong, but Tee off a check valve for about every 5 psi in between the map and your tb... correct? This trick was like 5 years ago.

03-06-2007, 07:54 PM

#13

Slo_crx1

3.0 BAR

Join Date: Aug 2003

Location: NE-PA

Posts: 4,666

Re: how to make check valve to fool map sensor?

Quote:

Originally Posted by m0nee

I might be wrong, but Tee off a check valve for about every 5 psi in between the map and your tb... correct? This trick was like 5 years ago.

Older than that dude. I remember seeing check valves on some of the first boosted Honda's I'd seen...nearer toward 98 or so, and I can bet it was being done way before that too.