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Carbon Airbox on S50 engine

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  • #16
    2 hours from Luton to Eastbourne, good effort!

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    • #17
      Originally posted by Rags View Post
      2 hours from Luton to Eastbourne, good effort!
      ah the height of optimism!

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      • #18
        I hope he has made it home alright....! Or perhaps he is still out there driving and enjoying the sound
        1997 AC Schnitzer M3 Evolution, Techno Violet

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        • #19
          Maahny,

          how do you create a load / air mass signal for the ECU if the MAF sensor has been removed ?

          Regards, Will

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          • #20
            Originally posted by wfarrell View Post
            Maahny,

            how do you create a load / air mass signal for the ECU if the MAF sensor has been removed ?

            Regards, Will
            one word.........

            Sal!
            Last edited by BEN; 23-04-2008, 08:55 PM.

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            • #21
              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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              • #22
                Sorry 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.
                Last edited by maahny; 23-04-2008, 10:14 PM.

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                • #23
                  that airbox is the nuts!

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                  • #24
                    Imran,
                    That looks and sound the dogs bollocks. Good job

                    Shame it's on a rag top.
                    From Z3 MC to Z4 MC... glad to be back

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                    • #25
                      Originally posted by maahny View Post
                      Sorry 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.
                      Maahny,

                      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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                      • #26
                        that dyno chart would look a lot better if you could get rid of that trough in both torque and HP between 2-3500 rpm.

                        Any ideas on that?
                        From Z3 MC to Z4 MC... glad to be back

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                        • #27
                          imran

                          are we saying 45bhp or am i reading it wrong

                          1800 euros

                          whats that work out fitted and remapped ?
                          [GROWING OLD IS COMPULSARY ---- GROWING UP IS OPTIONAL

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                          • #28
                            Group buy?

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                            • #29
                              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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                              • #30
                                Originally posted by exdos View Post
                                Anyway what do they put in KFC? Come on, tell us!
                                its not chicken its rat!

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