Problem adding MAT to $0D TBI 7427, Not pulling timing.

[brian617]

Its kind of hard to explain, but this is the way I understand it. The air moving through the intake at low speed, low air flow, has more time in the intake to heat soak and becomes the same temp as the ECT. As air flow increases, the air has less time to heat soak in the intake as it moves through, so you would in theory want the PCM to bias more toward the MAT sensor, while calculating AFR. This number is a multiplier I have all 1's in it currently, anything less than 1 will richen the mixture up.

I understand airflow the same way, its the numbers (multipler) that doesnt make any sense to me. Example, how would you know how fast your'e going if your speedometer used chinese numbers lol. If anything less than one will richen the mixture, would numbers above 1 lean it out?