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    • OE Tuning helps create the world's most powerful supercharged E46 S54 M3 - 610 whp

      610rwhp 423lbs torque for a VF Stage 3 M3 tuned by OE Tuning is now the world's most powerful supercharged S54. The vehicle was previously running a tune from VF's partner, GIAC, but there were concerns about the car running too lean as well as having idle surge issues which are well documented with VF cars. OE Tuning managed huge gains as well as a safer air fuel ratio from the previous tune.


      Here is how the car looked with the previous tune:


      Congratulation to OE Tuning and car's owner, CarbonChooch.
      This article was originally published in forum thread: OE Tuned Vf Stage 3 started by CarbonChooch View original post
      Comments 85 Comments
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by MSpiredM3 Click here to enlarge
        No, HPF doesn't use that as their CR. I'm saying his compression ratio should be 9.8:1 because that is what VF spec'd from CP for their stage 3 builds, so his piston should be those
        Weird, I have seen Stage 3 with 9:1 as well so it seems there is no standard.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by MSpiredM3 Click here to enlarge
        This was on a Dynapak? That makes much more sense, I would deduct at least 30rwhp from that
        I think your concerns of the dynapack reading higher are valid but the main thing is the curve and the AFR's.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by BrenM3 Click here to enlarge
        I've baselined a ton of cars on this dyno, and a local mustang dyno down the street, and a dynojet on the same day. They all read similar, the only thing about the dynapack it reads maybe 1% higher on the torque reading only, probably due to the lack of rear wheels.

        It is a non-adjustable dyno (no ctrl x, no temp probe in the engine bay bs), no wheel slippage, no strap bs, weather station attached to machine and cannot be manipulated etc.

        The M3 baselined at 554 IIRC before the tune.
        Do you have the baseline?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by TaZaM3 Click here to enlarge
        I dont get it, whats brentuning and oetuning?

        Also i just had to mention from what ive seen Dynapack's are the highest reading dyno's.
        You know OE Tuning, right? Bren works with OE regarding their East Coast applications.
      1. OE Tuning East's Avatar
        OE Tuning East -
        Graphs are being emailed from the Dyno operator.

        Nick @ ACE performance is re-doing the Pulley system on this car to eliminate the idle drag, and the high rpm slippage. He is also going to address the coolant expansion tank which seeps, the SINGLE Bosch 044 fuel pump that ran out of pressure past 7600 rpms and the tiny air filter that was clogged during these pulls. Then we will give it another shot Click here to enlarge

        It was 94.4 degrees during testing that Friday and the humidity was at 100% according to the weather station.
      1. TaZaM3's Avatar
        TaZaM3 -
        Great job! Finally someone is making the VF kit better.
      1. GG///M3's Avatar
        GG///M3 -
        This is good stuff
      1. Funkboy316's Avatar
        Funkboy316 -
        i have some questions regarding the tuning, and im not going into a rant or slamming just really curious. was anything modified from the VF end to complete the outstanding tuning done on this. This appears to be a solid tune and was curious if you removed all the so called "scaling resistors" from the car to tune the DME or are they still in use?
      1. MSpiredM3's Avatar
        MSpiredM3 -
        Click here to enlarge Originally Posted by Funkboy316 Click here to enlarge
        i have some questions regarding the tuning, and im not going into a rant or slamming just really curious. was anything modified from the VF end to complete the outstanding tuning done on this. This appears to be a solid tune and was curious if you removed all the so called "scaling resistors" from the car to tune the DME or are they still in use?
        They went with Alpha N so I'd bet there are no more resistors
      1. Funkboy316's Avatar
        Funkboy316 -
        ah ok, i missed that part.
      1. mpoweroo1's Avatar
        mpoweroo1 -
        Click here to enlarge Originally Posted by Funkboy316 Click here to enlarge
        i have some questions regarding the tuning, and im not going into a rant or slamming just really curious. was anything modified from the VF end to complete the outstanding tuning done on this. This appears to be a solid tune and was curious if you removed all the so called "scaling resistors" from the car to tune the DME or are they still in use?
        To start out, this car is running an Alpha N.
        Next, the rescaling resistor by and of itself isn't going to be the problem.
        A rescaling resistor simply acts as a voltage divider when combined with the internal resistance of the ECU's ADC (Analog to Digital Converter) input with respect to signal ground. Generally an ECU ADC input can read from 0 to 5 volts.
        But the MAF can put out a voltage WELL above 5v. The rescale resistor simply will (example) cause the ECU to read 5/6ths of the actual MAF voltage - so that 6v out of the MAF becomes 5v into the ECU.

        The key is how the TUNE handles this. Is the MAF table properly
        rescaled? If so, then the Q (airmass in Kg/Hr) number in the ECU represents the
        real world and all is well. If not, "Houston we have a problem".
      1. Funkboy316's Avatar
        Funkboy316 -
        i was only curious as to what they may or may not have changed in order to tune it properly. i wasnt questioning what would cause a problem or not.
      1. mpoweroo1's Avatar
        mpoweroo1 -
        Click here to enlarge Originally Posted by Funkboy316 Click here to enlarge
        i was only curious as to what they may or may not have changed in order to tune it properly. i wasnt questioning what would cause a problem or not.
        Understand, just wanted to inform you that a resistor is not bad if you have a good tune. It is very obvious that the tune is the weak part of the VF kits.
        I am just glad that OE has the ability to get Carbons car running the way it should. Very impressive numbers on pump gas if you ask me.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by mpoweroo1 Click here to enlarge
        Understand, just wanted to inform you that a resistor is not bad if you have a good tune. It is very obvious that the tune is the weak part of the VF kits.
        I am just glad that OE has the ability to get Carbons car running the way it should. Very impressive numbers on pump gas if you ask me.
        I'm really starting to think the exact same, the tune deserves way more of the blame. Seems some heat should be directed at GIAC instead of at Nik.
      1. Funkboy316's Avatar
        Funkboy316 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I'm really starting to think the exact same, the tune deserves way more of the blame. Seems some heat should be directed at GIAC instead of at Nik.
        while i do agree with you, im still not 100% there is a tune. i still think they are "tricking" the DME with the resistors and relying on it to adjust and learn on its own to tune the car.

        im not sure if you guys remember or not but when the whole F&F thing came out there were several "resistor" mods found readily on ebay, you placed a resistor inline on your Intakes air temperature sensor to trick the cars computer into thinking the air was alot colder causing it to adjust fuel trims and advance timing. well of course they didnt work great and cause a $#@!load of problems, much like what is going on with the VF "tune"

        because of there contract with VF and probably signed disclosure statements we will never know or here from GIAC but im pretty sure they just did some small time things like removed some limiters and raised simple things much like the shark injector does.
      1. OE Tuning East's Avatar
        OE Tuning East -
        Just to clarify, all that was changed was we unplugged the MAF Click here to enlarge. Other then that it's exactly how the VF kit is setup.

        From our testing ACE is going to fit a large fuel pump, or twin setup, different pulley system for less idle drag, and a larger air filter. We felt there was some power to be gained there.
      1. Funkboy316's Avatar
        Funkboy316 -
        Click here to enlarge Originally Posted by OE Tuning East Click here to enlarge
        Just to clarify, all that was changed was we unplugged the MAF Click here to enlarge. Other then that it's exactly how the VF kit is setup.

        We are going to fit a large fuel pump, or twin setup, different pulley system for less idle drag, and a larger air filter. We felt there was some power to be gained there.
        cool thanks for chiming in and answering my questions. you did a great job on this car.
      1. TaZaM3's Avatar
        TaZaM3 -
        OEtuning, did you guys notice a large difference with the VF tune on the car vs the stock tune? Curious to know how much VF altered the stock software.
      1. OE Tuning East's Avatar
        OE Tuning East -
        Here's some videos and pictures we found of Andrew's car on the dyno:

        Click here to enlarge
        Click here to enlarge


      1. OE Tuning East's Avatar
        OE Tuning East -
        We did not look at the tune. Before we tuned, we reflashed the car via GT1 to the latest BMW software and started from scratch.