|
Re: Thread for those of us who tune our own cars
Quote:
Originally Posted by Mach828
The o2 sensors just read the ratio of oxygen to fuel in a given sample. So the computer adjusts fueling through stft so the sample of exhaust reaches 14:1 in closed loop. The mtf predicts the what flow of air through the maf will ultimately translate to that ratio after combustion. Once it knows the fuel needed for that ratio, that the base fuel table can be used to determine the fuel added to reach the lamba desired in the base fuel table. Forcing open loop and changing the bft across the board will prove this theory if the mtf is accurate.
|
Very well written. But i would state the maf reads the incoming air predicts it
__________________
mods:cai, flowmaster 40's, o/r x tune
best et: 13.17@107mph & 8.56@84.5 1/8
new mods: spacer, 98 cobra cams 4.10's
new times: 2.12 60' 1/8-8.44@85.97 1/4-13.0@109.76
New mods:Ported eaton swap divisonX 340 pump, 3.4 pulley@ 9#, 60# dekas, Lmaf, egr delete, aem wideband, ET streets
TUNED by ME!....with SCT proracer softwear!!
482hp / 481tq
new times:1.7-60' 1/8-7.724 @92.4 and 11.8 @118 1/4
00 SS Camaro M6 with 8.8 rear 3.73 gear. bolt on's and tune
times: 1.8 60' 12.8 @111
|