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Part 2 -
Wiring, Upgrades and Installation
by Matt Rose
8/31/04
  All
right, on to the fun part! Now that the motor
was out and the prep to the engine bay was
done, I started working on the wiring on the
new motor so I could get
it to plug into the stock harness like it was
the factory engine. This was not simple; I
would suggest professional help for an inexperienced
mechanic or anybody not familiar with major
engine electrical work. In order for this to
work I took the engine harness off the H22A
as I marked each plug with tape so there was
no confusion where it came from. I then did
the same thing to the engine harness on the
D16. There were some differences in the harnesses,
but with the wire diagrams to both motors I
could easily identify how everything was wired.
About 80 percent of the D16’s harness
plugged into the H22A’s sensors and accessories.
There were some plugs that had to be lengthened
and some that needed to be changed to accommodate
the newer style sensor in some places or that
could change the sensor to accept the plug.
Be very careful in this stage of the install.
If you make a mistake here it could cause you
a lot of problems.
 I went with yellow flex loom and yellow tape
and loomed it up to give a nice look to the
harness, plus it was such a pain in the rear
to do that I didn’t want people to overlook
what took me the longest! The
stock P28 ECM will work on this application
with some modification. What had to be done
was fairly simple; the chip had to be reconfigured
with new parameters for injector pulse, fuel
curve, timing, redline and secondary or V-tech
engagement. So I contacted a guy at hyperducktuning.com
and he had a package deal for two custom chips
and the socket. So I ordered them, took the
socket and the ecu to a local TV repair shop
and had the ecu socketed. Now it will accept
all three chips: the stock D16 chip and the
other two for the H22. Both chips have different
parameters, one for racing and one for street
(emissions). Upgrading the performance on the
H22 while it was still out of the car was fun.
There’s nothing like getting the goodies
from UPS; it is almost as cool as my birthday
or Christmas.
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