Correct mapping for Camshafts

[Programmer]

Carl,

I can't verify the ECM, but the guy brought the PROM only to the shop. Code
was AWLB on the chip--only in the 6299 ECM. I'm starting to wonder what else
was swapped in the truck <g>...
This is where it gets kinda tricky--I "think" the VE map starts at 2E6--but
is larger than the 7747 Map ????

Lyndon.
-----Original Message-----
From: EFISYSTEMS at aol.com <EFISYSTEMS at aol.com>
To: gmecm at efi332.eng.ohio-state.edu <gmecm at efi332.eng.ohio-state.edu>
Date: October 27, 1999 12:04 AM
Subject: Re: Correct mapping for Camshafts


>Hi,
>      I realize you say this is a 90 chev pu..but why does it have the 6299
>in it????did it used to have a supercharger on it???? the 6299 wasn't used
in
>a PU until 92......but supercharger companies used to convert the early
7747
>to a 6299 because it was a direct plug in and they didn't reverse the code
of
>the 7747 until later.....otherwise check your year......a 7747 will plug
>right in.....but that big of a camshaft is gonna take quite a bit of work
>especially with that slow processor....let me know if I can help.......
>-Carl Summers
>
>In a message dated 10/26/99 6:02:59 PM Pacific Daylight Time,
>nwester at eidnet.org writes:
>
><< Subj:     Correct mapping for Camshafts
> Date:  10/26/99 6:02:59 PM Pacific Daylight Time
> From:  nwester at eidnet.org (Programmer)
> Sender:    owner-gmecm at esl.eng.ohio-state.edu
> Reply-to:  gmecm at efi332.eng.ohio-state.edu
> To:    gmecm at efi332.eng.ohio-state.edu
>
> Hi guys,
>
> Got a guy I'm trying to help out at a neighboring shop. He's got a
customer
>with an
> AWLB Prom (90 GM 5.7L C15 Truck) and the wrong camshaft.
>
> Right now, the guy has put a Comp Cams 280H (.480 Int/exh and 280 degrees
>duration) in his bone stock truck engine, has only 14" vacuum at idle
>(needless to say his truck is really overfueling). Runs like crap till
around
>3000 RPM because of the overfueling. Only other modification on the truck
is
>headers and a dual exhaust.
>
> What's the plan of attack to correct this, based on differing parameters
in
>the PROM ? I realise this is a 16146299 ECM, and I'm working on an *.ecu
for
>this one right now...but ideas from a 7747 would really help.
>
> Thanks--I'd appreciate straight answers and not things like "he chose the
>wrong camshaft" <g>. I'll at least admit I'm not sure how to reduce fuel
vs.
>MAP.
>
> Lyndon.
>  >>