Re: 89 200TQ Boost dump

[orin@netcom.com (Orin Eman)]

> Orin may be able to comment on whether the computer is going into any
> other protective mode when overboost  occurs. I have not looked into 
> that area of the ECU code.

Certainly for the Mac11b (before 89.5), the computer doesn't do anything
other than control the wastegate solenoid up to the point you have excessive
boost for more than 1/2 second... at which point it cuts the fuel pump.

If boost isn't over the overboost limit, the following applies:
If the computer detects knock, it retards the timing.  When it gets to
maximum retard, then it will try to reduce boost using the wastegate
solenoid.  If this doesn't work, the fuel pump is cut.

> How many people out there are running Charlie spring mods or
> some other ECU hack, Shrapnel Knobbin or pressure bleeder valve? 
> Send me an email directly. Orin and/or myself may want to provide 
> some low cost ECU mod for the people out there running with these 
> type of mods but who would never spend the $$ to go with the IA solution.
> I don't want really want to compete with Ned at IA because I think 
> he provides a good mod and a LOT of good customer service for his price.
> But......I  kind of hate to see people run these hacks when there is a much
> better way to go. Maybe I can start an "ECU club for Men"
> "I'm not only a spokesperson for the product but my car
> actually kicks ass with it"

Maybe we can negotiate with Ned to socket ECUs since that is the
part I certainly don't want to do.  Once the EPROM is in a socket,
the rest is easy.  Or I suppose I could hit the yellow pages
to find a local company that can do this job.

Orin.