Re: BPW and Cylinder Vol.?

[Squash <realsquash@yahoo.com>]

--- Roger Heflin <rah@horizon.hit.net> wrote:
> VE is different for different loading conditions.  The VE for WOT with
> the brakes holding the car is different than VE for the same RPM at
> WOT without the car being held.

Then wouldn't it use a different spot on the VE map?  
 
> 90Kpa is open loop, it is easy to tune.   You run diacom, do a
> dragstrip run and make an educated guess at how the O2 sensor reads.
> I will also probably help to read the plugs, but just from the O2
> sensors if you are careful you can get a pretty good idea.

This is what I did when I enabled PE.  So there must be a setting somewhere to disable CL based on
MAP.  I disabled PE by changing TPS enable % to 95.

> Putting a 10000lb sled on the car to hold this conditions, is a
> completly different tuning point and won't be very useful for how it
> will work at 5500, 90kpa for 30 seconds, it is just not the same.

First, this is a truck, i shoulda said that.  It is used for off-roading.  Sand dunes, mud, rocks,
trails, truck pulls all have different operating ranges.

> The holding the brakes part would only be valid if this was a pulling
> vehicle, and then I would suggest getting a trailer to slow it down,
> and then the tuning with a trailer won't be  valid for the car
> without a trailer (their will be significant BLM adjustments to adjust
> for now trailer).

Squash

=====
Trains, Trucks, and EFI at http://www.trailrunners4x4.org/users/realsquash

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