EFI POWWOW

[bcroe at juno.com]

Saturday I made the 5 hour trip to my 1st EFI 
POW-WOW.  A flat tire 2 miles from home caused
me to go back for another spare.  North of 
Indianapolis they closed the interstate, but I got
there anyway.  Found gas at $1.299 one place.  

I got to meet a bunch of people that were just 
internet contacts before.  Kevin Wong showed up 
with his 455 powered Cadillac, doing the lean burn 
thing to get 20 + miles per gallon.  It was fully temp 
instrumented, guess that propane refrigerant 
helped boost the mpg.  It was running an electronic 
Q-Jet, the WB project should allow him to farther 
optimize lean operation.

Bar-B-Que was great Sat afternoon; the sauce was
very hot.

The police cruised by a few times, but no beer or
burnouts, so they left.

BobR couldn't make it; another day.  There were
Ford, Chevy, Buick, Olds, and even diesel engines, 
I think Olds was the winner with 350, 403, and 455
all running.  Plenty of parts, EPROMS, sockets, wires,
laptops, o-scopes, etc were on display, with some 
on site assembly going on.  Nobody brought a solder 
sucker.  No luck getting my DATA I/O programmer to 
work.

Some of the first WB units were operational.  Bruce
P. pointed out that his unit was taking many minutes
to warm up.  A quick measurement reveiled the heater
curent was 1.3 amp.  I also had seen that a current 
limit of 1.2 amp would never fully warm up on one of
my WB sensors.  The conclusion was that adding one
or two 15 ohm 1/4 watt resistors in parallel with the 1
ohm R4 would bump up the heater current around 
.09 amp each.  Bruce will of course report to us the
resulting warmup time, which I would like to see 
between 1/2 and 1 minute.

Now where are those parts for the other 250 WB units?

The cats were watching us, safely locked inside.

Bruce Roe
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