anybody got a .csv log of an n/a with stock MAF scaling?
#1
anybody got a .csv log of an n/a with stock MAF scaling?
I'm just interested in seeing MAF and load readings under WOT pulls especially. Or can anyone tell me what is the typical peak gram/second and lpeak oad reading on a stock or mostly stock n/a car?
Last edited by arghx7; 10-19-2009 at 04:18 PM.
#2
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iTrader: (3)
As the OE MAF calibration sees it (with no add-on intake or exhaust), the MAF can range from 190 to 220 g/sec around 8000 RPM, where it typically peaks.
FYI - The highest MAF reading I've seen so far (on a turbo car) was 454 g/sec. The lowest peak MAF reading I've seen on a totally stock car (a 2004 that probably had a "soft" engine) was 176 g/sec.
FYI - The highest MAF reading I've seen so far (on a turbo car) was 454 g/sec. The lowest peak MAF reading I've seen on a totally stock car (a 2004 that probably had a "soft" engine) was 176 g/sec.
#7
so I was tuning a friend's Subaru Legacy GT today using AccessTuner. Those are basically STi's with smaller turbos, so 2.5 liter 4 cylinder boxer engine.
Interestingly enough, his peak MAF values (stock MAF stock intake stock turbo) were slightly lower than your log there ^ and he was running peak boost of 16psi tapering down to about 12 as the turbo ran out of breath. That's with a full 3 inch exhaust, stock turbo, catless uppipe. The car was on a dyno that is not known to read high (Land & Sea Dynomite) and it did 220rwhp/260rwhp torque. With less airflow than a stock Rx-8. It peaked at about 220 g/sec around 4000-4500rpm and held flat up to about 6500 rpm as the boost tapered off.
I'm not sure what's more impressive, how much air a rotary can flow or how little power it can make with that flow? I really hope Mazda makes some big strides with the new combustion chamber design, this is kind of ridiculous.
Interestingly enough, his peak MAF values (stock MAF stock intake stock turbo) were slightly lower than your log there ^ and he was running peak boost of 16psi tapering down to about 12 as the turbo ran out of breath. That's with a full 3 inch exhaust, stock turbo, catless uppipe. The car was on a dyno that is not known to read high (Land & Sea Dynomite) and it did 220rwhp/260rwhp torque. With less airflow than a stock Rx-8. It peaked at about 220 g/sec around 4000-4500rpm and held flat up to about 6500 rpm as the boost tapered off.
I'm not sure what's more impressive, how much air a rotary can flow or how little power it can make with that flow? I really hope Mazda makes some big strides with the new combustion chamber design, this is kind of ridiculous.
Last edited by arghx7; 12-06-2009 at 10:33 PM.
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