Date:         Thu, 4 Oct 2001 11:16:41 EDT
Reply-To:     FrankGRUN@AOL.COM
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Frank Grunthaner <FrankGRUN@AOL.COM>
Subject:      Found: Dyno Runs for Stock and Chipped Digifant II 8V 1.8L Engine
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Title says it pretty much. SWMBO was cleaning up the study handing me pile
after pile of useless paper (her words, precious archival data - my words).
After several testy exchanges about the destruction of my sedimentary filing
system, peppered with thinly veiled threats about sleeping in the Westfalia,
she produced a set of Digifant II Dynamometer results that I had been
searching for over a year. Several of you had asked for copies of this rare
data (uncorrected torque and power at the wheel as a function of rpm). The
curves map power from 2000 to redline (6300 stock, 7000 chipped). The curves
are for the RV engine and show a flat torque curve from 2000 rpm to 5100 rpm
(105 Lbs/Ft for stock and 108 Lbs/Ft for the AMS chip). The torque then drops
off linearly from 5100 rpm to 6300 rpm for stock with 70 Lbs/Ft (at 6300),
and to 75 Lbs/ft at 6600 for the chipped version. This linear drop-off of
torque at the high end gives the characteristic I4 power curve with an
extended flat horsepower peak. For the stock chip, power rises linearly from
2000 rpm (40 hp) to 5000 rpm (93 hp) and then remains at 93 hp to 6000 rpm
where it falls off to 72 hp at 6500 rpm. For the AMS chipped version, power
linearly rises from 2000 rpm (40 hp) to 5000 rpm (100 hp), continues to go up
to a broad peak (5600 - 6200 rpm) at 102 hp, then falls to 100 hp at 6500,
then steeply falls to 68 hp at 6900 rpm.

These curves are for stock vs chipped only. No intake mods or exhaust changes.

Anyone who wants a scanned copy by email, ask! I've lost your addresses over
the extended search interval. Besides, a little keyboard activity makes the
Westfalia really comfortable.

Frank Grunthaner