2 hours from Luton to Eastbourne, good effort!
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Carbon Airbox on S50 engine
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Jayson has picked up his car and is driving home....... making alot of noise and wearing out his tryes at an alarming rate :)E34 M5 3.8
6 speed
345mm Discs & 4 Pot calipers
was 347.9 BHP....dunno now but it is faster.
Why didn't BMW use my engine in the ZM instead!
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Originally posted by maahny View PostSorry guys - we are not going to discuss the technical details of how MAF removal is carried out. It was hard work sorting this out - its like asking the KFC for their secret...:-)
First post edited to include pictures and dyno graph.
Appreciate why you want to keep your methods 'KFC' secret -- removing the MAF sensor is indeed (very) hard-to-do.
That's why I asked the question -- the air mass signal is an absolutely critical input into the BMW ECU strategy. Fuel mass, ignition angle, and cam position are all referenced to air mass -- hence air mass signal accuracy is uber-critical, both in full load and part load conditions.
It would be possible to 'fudge' the ECU air mass calibration to enable the engine to operate at full load without a MAF (e.g. use the MAF failure/ limp home tables, or 'tweak' the MAF sensor characterisation), but (in my humble opinion) this would be a potentially risky solution.
In a number of other non-MAF BMW applications (such as the E46 CSL), air mass is inferred from manifold air pressure, air temperature, and engine speed, but this requires is a diferent ECU and software strategy.
Anyhow, good luck with the Carbon Airbox venture.
Regards, Will
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Imran,
Good gains! Just for my own curiosity can you do a comparison graph of my best run and Jason's with the airbox for torque?
Anyway what do they put in KFC? Come on, tell us!/// Exdos ///
"Men who try the impossible and fail spectacularly are infinitely superior to those who reach for nothing and succeed" --Napoleon Bonapart
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