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Date:         Thu, 3 Aug 2000 09:24:37 -0700
Reply-To:     Brent Christensen <brent@vanagon.com>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Brent Christensen <brent@vanagon.com>
Subject:      Re: Buying the ECU Chip- What version ECU to put it in!! -Works
              w-no rockers!
Comments: To: Wolfvan88@aol.com
Content-Type: text/plain; charset="iso-8859-1"

In his 1998 post about the Aussie chip, Lawrence Dongilli wrote:

>Additional benefits can be realized by adding an impedance transformer (a <genuine VW part available from the dealer) between the ECU and airbox.

Anyone know what he was referring to?

Brent Christensen '89 GL Syncro Westy "Klaus" Santa Barbara, CA

----- Original Message ----- From: "Robert Lilley" <Wolfvan88@aol.com> To: <vanagon@GERRY.VANAGON.COM> Sent: Thursday, August 03, 2000 6:59 AM Subject: Re: Buying the ECU Chip- What version ECU to put it in!! -Works w-no rockers!

> ...Chip is socketed (not soldered), so swap should not be any problem. Just > make sure precautions are taken to guard against ESD (electrostatic > discharge). I think he mentioned there may be some sort of foil shielding > to clip through to get to the chip... > > > ...****Your ECU module part number _must_ end in "022D". The chip will not > work otherwise. > > The chip can be run without rockers for about a 10% power boost, but they > _strongly_ recommended against running rockers without the chip. Yes, you > get a larger power boost but you will end will end up with a _very_ rich > exhaust mixture. Apparently the airbox is 'overstimulated' with the ratio > rockers, and the _stock_ ECU cannot accurately process/calculate the proper > fuel ratios. The engine with the new chip (with/without ratio rockers) > should still pass the sniff test (!). The chip should have sufficient > capacity to handle additional headwork, cam changes and exhaust work (but > to what degree I did not fully explore). Even a three angle valve job > would be a worthwhile improvement. Richard did wisely recommend a valve > spring upgrade if one departs from the profile of the stock cam. They > faxed me a dyno printout (actually, the exact same one scanned in at Kyle > Wade's website) which shows an increase of rear wheel horsepower from about > 58 horsepower (stock) to about 62 horsepower (new chip only). The chip > with ratio rockers (1.4:1 I believe) gives about 85 horsepower at the > wheel. This chip was originally designed to add to their Vanagon Truck > used to tow their race car with tools, spares, etc, with their 'goal' being > a total increase of 10-15%. I guess they made it... > > I edited the text of Lawrence Dongilli post in July 1998. > > http://gerry.vanagon.com/cgi-bin/wa.exe?A2=ind9807e&L=vanagon&D=1&O=T&P=1162 6 > > > If you want to run the chip and have an older DF ECU, you could buy a > new/used correct model ECU put the chip in it and have the old as a spare. > That is what I did. > > The chip can also be run without rockers. Add the chip and then see if you > want more power. Then add the ratio rockers. > > Robert


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