[s-cars] Lehmann Stage 3 and Oil cooler update

[Paul Friedenberg]

Finally got my ECU porblem sorted out, many thanks to Keith Anderson who
sent me a loaner ECU to use. As it turns out, the loaner ecu had a TAP chip
in it, which made an interesting comparison with the Lehmann stage 3 with 3
bar. I had the RS2 turbo and manifold installed with the TAP in place. The
car felt "wierd" below 4.5k. Very little midrange torque, when the boost
finally kicked in, it was quite a bit faster than stock. Last I checked, TAP
did not offer software upgrades for use with bigger turbos. Then, installed
the stage 3 ecu, what a HUGE difference. Much more midrange and a lot more
high rpm power. The exhuast (stromung) sounds terrific (although too quiet
for my tastes) at high rpms and high boost.
     With the oil cooler I had installed (an unused unit from a Chargecooler
made originally for supercharged Mustangs) I NEVER see temps even close to
130. Hangs around the second tick mark, although cruising at 100+ mph with
outside temp of 95, it does climb a bit. I believe my oil capacity increased
about .5 quarts. An upgrade many of you in hot areas should consider. I
bought the cooler for $50, and the lines were made for about $40. You could
spend more, but no reason to.  The oil cooler is mounted just behind the
pass side small vent, right about where a foglight might be mounted in newer
audis. The airflow to this location could not be better.
    Now its time for Samcos!


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