[Gmecm] Which ecm to use

[Mike V]

HI Phil,
several people have run the 749 turbo code in the 730.
Use a memcal from a 730 for an engine that had the correct number
of cylinders for your app, and put the turbo code in the last
half of the chip.  The turbo 749 chip was 27128 equivilent
  and the 7730 had chips that were all 27256 IIRC.
You can also just add the code to itself to get 256kbytes
to burn into the larger ROM.
Cheers,
mv


At 04:19 PM 7/21/2006 -0700, you wrote:
>I have a '90 Nissan 240 sx which I was wanting to
>convert to a GM ecm for tuning simplicity and also to
>swap to a speed densty system and get rid of the MAF
>sensor. For now it is naturally aspirated but some day
>I want to turbo the car. I used to have a 749 ecm I
>was going to use on the car but I got busy doing other
>projects and sold the ecm and memcal I was going to
>use. Since then I have decided to delve into the
>project again but now I am wondering which ecm to use.
>I was thinking that a 7730 would suit me just fine but
>I am not sure of its compatbility with a turbocharged
>engine. Thanks in advance,
>
>Phil