Quote:
Originally Posted by kendallcschm
yea and its nice anyway... so if i were to get a mustang and i wanted to own someone when drag racing i would rather have a MAP than a MAF?
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A MAF is more fuel friendly (ECONOMY) , because the air/fuel ratio always try to stay around the 14.7:1 ratio most of the time. You can change the air/fuel ratio by using a MAF translator, but this is not a smart move if you start making hi-hp (400+hp).
Here is the reason why i am trying to steer you away from MAF. If you have a hi dollar motor ($10,000). you will hate to hurt the motor because of MAF issue. In my yrs of build fast car. I have experience many problem with MAF. sometime the HOT wire element will get damage. if this should happen during racing....You will detonate/blow the engine due to faulty fuel consumption.
Another thing. You do not want to run a MAF on a turbocharge or supercharge car with high boost. The SUCTION of air from the turbo compressor fan will create enough force to break the hot wire element.
I always use a climate scanner to record current air quality and condition. With a SPEED DENSITY you can enter all the data into the ECM/PCM software base on weather condition. You will need a climate scanner if you plan on running 800+hp and want consistent time run (bracket race). Once you know your sea level, humidity, and air temp. You have all the data to match you fuel requirement. The cell number in the Block learn can be change to rich en or lean out fuel during the RUN. The BEST part about speed density is, you can custom tune all the way through the power curve, by change fuel to quench detention at certain rpm, instead of running a rich mixture all the way through the run. Speed density required experience from the tuner. If you can tune a carb engine you will have a better understanding tuning speed density. You can also you a EGT or wide band O2. This EGT (exhaust gas temperature) probe, will record the exhaust gas burn RATE/temperture.
Just like a gas welding touch. if you had more oxygen to the welding gas. the flame will burn/cut/melt the metal. If you add less oxygen. the flame will burn at a lower rate, leaving a lot of black carbon after the flame is burn. Look at most of the so-call IMPORT racer. You will notice the awful Black carbon build up on the muffler tips. The EGT will let you fine a median in the burn rate. once you fine a median burn rate, then you can play around with the fuel and timing for best HP and 1/4 miles runs.
Speed density is a MUST in winning race.