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Old 12-08-2004, 01:03 PM   #1
Fastbird
 
Join Date: Aug 2004
Location: Sicklerville, NJ/McGuire AFB
Posts: 457
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Anyone a Tuning Guru, couple of questions:

This concerns tuning a 93 Trans Am:

Now before anyone cries foul on me for playing with the VE tables, it's a speed density 93 car. I don't need no obstruction in my induction.

Also, this is just for my learning purposes, I have no intention of running a modded tune (from my actual tuners tune that is) until I have figured out a fix for my split BLM's.

Now, I've exported my Datamaster log to Excel with the following parameters:

RPM, MAP, Left LTerm, Right LTerm, Fuel Trim Cell

I sorted first by Fuel Trim Cell, then by RPM, then by MAP.

Here's the question: do to my stupid Split BLM issues (still gotta drill my TB, but I'm jsut playing right now, not running these tunes) I don't have an equal BLM on the left or right most of the time. Most of the time it's only a split of 2-4, but sometimes there's an anomale where it's a 30+ split.

I'm using the average formula in excel to compute the average for each RPM/MAP block, then using that average to compute a percent change necessary to bring my BLM average up to 128. IS THIS CORRECT???

Should I discount the anomalous VERY wide split BLM splits when they appear, or include them???

And, here's another question. I'm just computing averages, and I noticed that I have the same map/RPM values IN DIFFERENT BLM CELLS.

I thought the BLM Cell Boundary tables made out where the cells switch over. How can I have the same values in two different fuel trim cells show up in the same VE Table cell, and how do I make a correction based on such information if it's differing (one right on, one way too rich)??
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