Bosch Motronic Questions

[WERNER_HAUSSMANN at HP-Loveland-om2.om.hp.com]

To get the plastic cover removed from the Air Meter, take and X-acto knife 
and remove the selastic, silicone caulking type material as much as you 
can. Then run the knife between the plastic and metal as best as you can. 
No need to cut the plastic.

Now pull on one corner slowly to give time for the selastic to loosen and 
tear inside.  You might try to get it started at the connector.  Anyway if 
you pull slowly to loosen one area you can work around the rest of the 
meter.  The cover is held on by the selastic and will come free by pulling 
it off. You'll see how the spring can be adjusted after you open it.  Mark 
it before you move it!!!!!


If you loosen the spring about two notches (about 2% point AFR) it should 
help the hesitation if there is any.  But if you use a O2 sensor normal 
running will not change.

Can't help on the EPROM.


Werner


______________________________ Reply Separator ________________________________
_
Subject: Bosch Motronic Questions
Author:  Non-HP-owner-diy-efi (owner-diy_efi at coulomb.eng.ohio-state.edu) at 
HP-ColSprings,uugw2
Date:    6/19/96 11:46 AM


Two questions for the collective...

1) I've been told that it is possible to lessen the spring force on the door 
of the Air Meter by moving the spring back a few notches, which may
somewhat lessen the throttle lag issue.  I've tried to get to the spring by 
removing the bottom plate of the meter, but apparently access to the
spring is from the top.  My question....  How do you get the black plastic 
top off without destroying it in the process?  I'd also be interested in 
hearing from anybody who has experience with this modification.

2) What blank E/PROM chip do I need to order for the ECU?  (I've got 
access to a chip programmer and wanted to make back-up copies of my 
current chips).  Also, any suggestions on sources?

Thanks,

Brad (banesi at novell.com)
'86 Porsche 911 Coupe
'91 Alfa Romeo 164