[s-cars] MTM 1+ chips and GM map sensor

[Ben Swann]

Voltage output with respect to manifold pressure is nearly identical on a few of these.
The issue may be more with packaging and fitment inside the ECU - you should be able to
make it work.  Also there are a few different versions that have a different Vo skew.
You want one that measures linearly from  - 13.7  to 30.0 PSIg .

You will need to verify which leads on the GM sensor correspond to the pins of the
pressure transducer to solder on the circuit board in the ECU.  That I don't know off
hand, but it is likely the leads do not match up with the pin order of the BOSCH.  Also,
the stranded wire leads are not a good way to solder on a printed circuit board.

I'll have a pin for pin direct substitute available for original Bosch 3 bar P.T. soon
for around $100.

Ben.

[Date: Sun, 15 Aug 2010 16:58:49 -0700 (PDT)
From: George Verbryck <georgeverbryck at yahoo.com>
Subject: [s-cars] MTM 1+ chips and GM map sensor
To: s-car-list at audifans.com
Message-ID: <893925.99534.qm at web56403.mail.re3.yahoo.com>
Content-Type: text/plain; charset=us-ascii

I recently purchased to some MTM 1+ chips to install and was figuring on using the
generic GM 3 bar map sensor obtained from ebay. I have been told it should work OK ,
just wondering if anyone else has used one and how it worked. I would also like to know
the three wire connection wiring for the GM sensor, any BTDT. I have some Lehman stage 3
chips now which I like but always trying something different .
Regards, George]