[Gmecm] Gmecm - Does anyone know if there are any tricks to using abig cap HEI on a 747 ecm?

[Steve Ravet]

> -----Original Message-----
> From: gmecm-bounces at diy-efi.org 
> [mailto:gmecm-bounces at diy-efi.org] On Behalf Of Mark Romans
> Sent: Thursday, June 01, 2006 10:54 PM
> To: gmecm at diy-efi.org
> Subject: [Gmecm] Gmecm - Does anyone know if there are any 
> tricks to using abig cap HEI on a 747 ecm?
> 
> Gmecm - Does anyone know if there are any tricks to using a 
> big cap HEI on a
> 747 ecm?
> 
> I have a friend who put a 747 ecm in his 80 Buick and is 
> running a big cap HEI and a 747 ecm.
> The Car runs great with the EST Bypass disconnected, except 
> it doesn't have any power due to low timing advance in the 
> module, when he hooks up the EST bypass the timing jumps all 
> over the place.

I've seen that at idle also on my TBI blazer.  I think it's "normal".
Ignoring the timing light, how does it run?

--steve


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