[Gmecm] Off idle stumble

[Mark Romans]

How did you build your 1100 cfm maf?  Is it based on a stock one?
Thanks!
Mark

----- Original Message ----- 
From: "Mike Poore" <mp at FlowersByValerie.com>
To: <Gmecm at diy-efi.org>
Sent: Friday, March 10, 2006 7:03 PM
Subject: Re: [Gmecm] Off idle stumble


> No, it is an '85 L98 MAF system. Someone else wanted to know about my 
> setup, so I'll go into some detail.
> 
> It is an '85 vette. Right now the block is a 355, but will be replaced 
> with a 420 cid. I have the TPIS Mini Ram, a 58mm throttle body, handmade 
> MAF capable of 1100 cfm, handmade fresh air system, long tube headers, 
> air system removed, cats removed, no egr,  hand ported heads, Ford 
> Racing 40# injectors, 10:1 compression, Richmond ROD 6 speed 
> transmission,  cap  dis ignition with remote coil,  and numerous 
> handmade bit and pieces to get everything to fit. Everything is 
> oversized for the 355, which is a bit of a challenge, but I can't afford 
> to get the 420 cid block right now. I don't want to know what I have 
> already spent not to mention the hours invested.
> 
> Mike
> 
> Darryl M Gilbert wrote:
> 
>>Are you using a MAP??
>>Darryl..
>>On Fri, 10 Mar 2006 20:21:09 -0500 Mike Poore <mp at FlowersByValerie.com>
>>writes:
>>  
>>
>>>I now have the BLM at idle between 126 and 128. My newest issue is 
>>>that 
>>>since reducing the injector pulse width vs. LV8 by 20%  to get the 
>>>BLM 
>>>to 128 the engine has a hesitation off idle. I have a 58mm throttle 
>>>
>>>body, which is a little big for the current configuration, but will 
>>>be 
>>>perfect when I get the 420 cid built. For now, I need to make due 
>>>with 
>>>what I have. I tried adjusting the following:
>>>
>>>Delta TPS Accel. Enrichment Pulses from 4 to 5
>>>Accel. Enrich. Delta TPS Scale Factor from 0 to 30%
>>>Accel. Enrich. Delta vs. Delta LV8 scaled up 20%
>>>
>>>Even with all three adjustments, the hesitation still exists. Any 
>>>suggestions?
>>>
>>>Mike
>>>_______________________________________________
>>>Gmecm mailing list
>>>Gmecm at diy-efi.org
>>>http://lists.diy-efi.org/mailman/listinfo/gmecm
>>>
>>>
>>>    
>>>
>>
>>  
>>
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