Cam tuning

[Jim Wilson]

  Bruce,

  I am not real familiar with the Buicks (2-Bar map sensor)and I presume
MAF. In my situation, with the early LT1's (92/93)  this is pure
speed/density (no MAF) so all my editing in boost is done at 100KPA. In
regards to your other post I am using Lucas 42#, high impedance injectors.

                                  Jim




-----Original Message-----
From: nacelp <nacelp at bright.net>
To: gmecm at diy-efi.org <gmecm at diy-efi.org>
Date: Monday, March 20, 2000 12:43 PM
Subject: Re: Cam tuning


I'm not real sure what your trying to get to.  While in a condition of lag
there is little or less then normal boost, at that point, so it is self
correcting at that stage.  On the Buick it's actual flow that generates the
grams per second that the ecm uses for it's computations, so everything is
relative to what the engine is actually doing
Grumpy

> As far as turbo tuning (for you Buick guys :) ), is there a big RPM vs.
> Boost difference at WOT depending on turbo lag, or is the boost curve vs
> RPM pretty much the same every pass?
>
> Thanks
>
> Doug R - Black 93Z A4 3.73 - D.B. F-Body Organizer
> Mods: DragRadials,Hooker 1.75" headers,Flowmaster,AS&M CAI
> Mods: 3.73 gears, SLP Torsen, S&S Stage 1 heads, UD pulleys,
> Mods: Chip,EibachSprings,1LEswaybars, AFPR - 13.11 at 105.5
> *My car: http://daytona.f-body.org/doug
>
> >>> Wilson.James4 at worldnet.att.net 03/17/00 07:48PM >>>
>
>    Bruce,
>
>   I definitly agree with you on this one. There is no way a "tunner"
> could
> get my 92LT1 right (Speed/Density) on the dyno. This was after he
> burned 10
> Eproms.
>
>   He tried to tell me there was something else wrong with the engine
> (all
> new 383). As soon as I hooked up with the group and got Tunner Cat I
> have
> been able to get a great program in the ECM. I am running the engine
> blown
> (Vortech Supercharger) with 42# injectors (no FMU)
>
>
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