Re: GM Performance EPROMS

["Bruce Plecan" <nacelp@bright.net>]

The part no. series I can reference to uses a 1613xxxx or 1612xxxx series
part no..

They also claimed 13.67 with the first crate engine retros for the CCC
Quadrajetted cars, i never saw that happen.

Might be a memcal "chip" change, but would be minor if at all IMHO.  Least
from a drivibility issue.  I had to make some drastic changes in ESC modules
with a TBI to get a noticeable difference in sensing.  Stock ECS stuff is
lacking in my opinion for serious work.  If not doing cause your seious then
not worth the hassle.
Grumpy

> Does anyone have an image (bin) of one of the GM Performance Parts EPROMs
> for the F-Body?  I remembered that GM released some performance EPROMs so
I
> dug into my old GM Performance Parts catalog and found the part numbers.
> I've list the 730 ECM EPROM part numbers here:
> 12341430, 305 TPI, Manual (M39), Dual Converters
> 12341431, 350 TPI, Auto (MD8), Dual Converters
> 12341432, 305 TPI, Auto (MD8), Single Converter
> 12341433, 305 TPI, Manual (MK6), Single Converter
> 12341434, 305 TPI, Manual (M39), Single Converter
> 12341435, 350 TPI, Auto (MD8), Single Converter
> I'm also curious as to if GM changed the ESC filter on these MemCals so
that
> they register less knock.  These chips were meant to work hand in hand
with
> the GM Performance Parts headers, catback, and siamesed runners.  GM
claimed
> a 50hp increase with the headers, catback, runners, and EPROM.


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