RE: Which Spider? (was Alfas and College students)/ "Chipping" an L-J et

["Peter Webb" <webb.p@xxxxxxxxx>]

FWIW, according to the Kartalamkis book, the biggest problem with the Bosch
Spiders is the single throttle body.  He recommends a multi-port butterfly
replacement or taking a Spica manifold and machining the injector ports to
take the Bosch injectors.   There are also upgrades to do with replacing the
AFM, modifying the AFM, replacing the injectors (email directly and I'll
return a PDF with all the Bosch injectors made with flow rates and
impedances).   You can also play with an adjustable FPR or a rising rate FPR
to change the fuel delivery as airflow increases.

There are things to do to an L-Jet Milano or Spider short of replacing the
box.   There is also ample information about the L-Jet ECU on the web where
one could experiment with alterations by replacing resistors etc.

see: http://users.exis.net/~audserv/Injection.html

Finally, there are 2 modified ECU's I know of for the V6.   Maybe the
developers of these have similar mods for a Spider box, or at least can
translate what they learned to a Spider box.   Fred DiMatteo has developed
one and so has Tom Zat.

There are things you can do that aren't plug and play but at least there are
options.

-Peter


-----Original Message-----
From: owner-alfa@domain.elided [mailto:owner-alfa@domain.elided]On Behalf Of
Bain, Bill
Sent: Friday, April 18, 2003 5:08 PM
To: 'Alfa Digest'
Subject: Which Spider? (was Alfas and College students)/ "Chipping" an
L-J et


I'll not dispute Tess' point that the pre-75 Spiders are the best
performers in the zoom-zoom department, but ANY Spider is a lot of fun
-- we're talking small differences here, not orders of magnitude.
Having said that, I'll still stand by my statement that the Bosch L-Jet
Spiders are the most bang for the buck since they are plentiful enough
to keep the price down and a pre-75 Spider could be as much as 14 years
older and that much more worn out, plus the '80s Spiders have additional
creature comforts, like A/C which would sway my decision if the Spider
in question were to be my only car.  YMMV.

I received the info from John Fielding on the digital replacement for
the brain box behind the seat (I think that's the fuel one). He's
apparently working on the other box, too. One thing he doesn't mention
is whether the digital box is plug compatible or whether one has to hack
into the harness.  I'd sure rather it be a plug-in swap since it's a 40
pin connector! Still, it would be cool to have the ability to change the
program with a laptop, which he offers.

Bill Bain
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