Good news -- wow this thread seems dead now -- I replaced my MAFs with new factory units (got them from this thread). I drove around for 15 miles then tested the flow.
Good news -- wow this thread seems dead now -- I replaced my MAFs with new factory units (got them from this thread). I drove around for 15 miles then tested the flow.
Forget new MAFS. Just get Alpha-N. It's not a lot more expensive than 1 set, and you'll never need to buy another MAF as long as you live. On top of that, your car will drive waaaay better too. It's a no-brainer really......
Forget new MAFS. Just get Alpha-N. It's not a lot more expensive than 1 set, and you'll never need to buy another MAF as long as you live. On top of that, your car will drive waaaay better too. It's a no-brainer really......
Ya but these are only $320 shipped ( I can have them in the car in less then 20 minutes). Isn't the Alpha-N $800 bucks plus & requires custom remapping of your fuel charts & stuff...
When testing the MAFS, are you guys accelerating up to the rev limiter or driving and keeping the revs at a certain RPM. I accelerated up to the rev limiter in 1st, 2nd, and 3rd. I saw 138l/h a couple times and 155l/h once. Is it possible each of us might be performing this test differently?
Eventhough my numbers seem pretty good and the car feels strong, I am seriously considering AlphaN. I'd like to add the AA CAI with K&Ns and won't do it as long as the MAFS are there (chance of fouling them with the oil)
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Evolve Automotive- Alpha-N/Evolve Medusa Headers/Tune/AIT Kit, Dinan 3.45, BBS CH-R 19x9 and 10.5, E60 SSK with illuminated ZHP, Floating Rotors with Axxis Ults, Slimmbones Rear Diffuser, Rear can delete with stock tips, Open Ducts, Clutch Stop, Royal Purple in the trans and diff; TEC cupholder and V1 hardwire (but I don't call them real mods)
When testing the MAFS, are you guys accelerating up to the rev limiter or driving and keeping the revs at a certain RPM. I accelerated up to the rev limiter in 1st, 2nd, and 3rd. I saw 138l/h a couple times and 155l/h once. Is it possible each of us might be performing this test differently?
Eventhough my numbers seem pretty good and the car feels strong, I am seriously considering AlphaN. I'd like to add the AA CAI with K&Ns and won't do it as long as the MAFS are there (chance of fouling them with the oil)
I have the same questions. What gear does everyone run their tests in? I saw well over 200 l/h at one point when I floored it in first gear while conducting this test, is my computer dumping way too much fuel into my engine (refer to my thread about my car having terrible fuel economy) or should this test be conducted in a different gear?
I have the same questions. What gear does everyone run their tests in? I saw well over 200 l/h at one point when I floored it in first gear while conducting this test, is my computer dumping way too much fuel into my engine (refer to my thread about my car having terrible fuel economy) or should this test be conducted in a different gear?
I had the impression (from reading here somewhere) that 3rd gear was ideal for this test. I got 133, 134, and 132 l/h (uncorrected) in at redline in 3 consecutive 3rd gear pulls.
higher gears give you more steady-state conditions that allow you to read real numbers.
the DME is going to dump fuel at entirely different rates based on engine load and the engine is loaded differently in different gears.
Ideally, you would test this on a load-bearing dyno, by first finding the peak torque location in the revband. Then, you would set the dyno to hold the engine at that RPM, then read the value under steady-state conditions.
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