"Bernd D. Ratsch" wrote:
> I haven't found any way to change the curve...yet...without having the
> computer custom programmed. ($400+ for a simple timing curve change isn't
> feasible.)
I'm leaning towards not actually changing the curve. In a way - I like it - its
just hard to live with. Instead I'm thinking of ways to work with it - like a
MAP-based alcohol/water injection system that comes on in stages - before/low,
during/medium, and after/high the onset of pinging. I want to get all these things
TOTALLY under control before I ever think about any power adders. On that note -
you are right about the retard module - just I hate being retarded 8-))
> And NOPE....no knock sensor that I can find or have heard of on these
> engines. The fuel economy theory is nice, but with the pinging problem,
> people will have a tenancy to keep their foot in it a little bit more to
> quiet it down. Also, when the engine pings that bad, fuel economy goes down.
You missed my point. I merely was stating that maybe higher fuel economy was a
goal as far as the factory's much advanced timing curve. It wasn't a theory
relating to pinging. And putting the foot down will only increase pinging while
under load unless there is a gear change from my findings.
> One interesting thing I found was that in 5th, the engine didn't
> ping....only in first through fourth. There's something there which i'm
> missing.
>
Interesting - I have only had experiences w/the auto tranny. On the other hand -
it seems to be related to rpms (probably due to the ignition maps table lookup).
If we keep hammering on this annoyance - we will eventually beat it. Too bad the
mechanics at the dealerships aren't as persistent. Pretty sad aint it? Proves
that money can't buy you everything. A strong will is pretty hard to beat tho.
Latr,
Shane
-- '96 IndyRam-HisIndy-MPI/TB/Pulleys/Coil/Wires/CompTAs '96 IndyRam-HerIndy-numbered(#142)"Track Truck" '74 Triple-Black Dodge Challenger Rallye 360 home-brew EFI R&D vehicle '68 Black Corvette Convertible 427 (For Sale)
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 11:50:48 EDT