[T3] Lean Cruise

[Keith Park]

Yes, from what I understand Vacuum retard took over the inner stop function
in 72, but im not sure how they handled it in 73, maybe that's the reason
for the different part number ECU and they just did that in the ECU.

Keith


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-----Original Message-----
From: type3-vwtype3.org-bounces at lists.vwtype3.org
[mailto:type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of Jim Adney
Sent: Saturday, March 09, 2013 12:02 AM
To: type3 at vwtype3.org
Subject: Re: [T3] Lean Cruise

On 8 Mar 2013 at 20:42, Keith Park wrote:

> Well, the D jet can apply a super lean condition to light throttle if you
> get the inner stop on the pressure sensor adjusted wrong, and I guess this
> has lunched engines in the past.

Keep in mind that only the 70-1 sensors HAVE that inner stop.

> One thing I CAN say, some of the D jet "experts" get it wrong sometimes
and
> Have gaps in their knowledge as well.

We all have gaps in our understanding, and I don't think any of us 
know what parameter mapping Bosch used when setting up our systems. 
There's plenty of room for educated guesses, but I'm impressed that 
the MS system allows you so much control. This clearly gives a lot of 
room for trial AND error, but if done carefully it sounds like a 
worthy effort.  

This is exactly what the folks at GM, Ford, and VW do, except that 
they have lots more people, better equipment, more time, and more 
money. They also have environmental constraints that they have to 
work within.

-- 
*******************************
Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
*******************************

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