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    • A little methanol and ignition timing gets 646 wheel horsepower out of the Pure Turbos Stage I upgraded W205 Mercedes-AMG C63 S M177

      You previously saw this Pure Turbos Stage I upgraded M177 V8 W205 generation Mercedes-AMG C63 S on 93 octane pump gas. The tuner, Precision Tuning, has since added methanol injection and they did a new dyno tune.


      The result? 646 wheel horsepower and 616 lb-ft of torque at the wheels. This is an increase of 25 horsepower and 20 lb-ft at the wheels over the STD corrected baseline. All on the same 21 psi of boost pressure.

      The question is, how much will they crank up the boost now with the supplemental methanol injection? This car will likely easily top 700 to the wheels.


      This article was originally published in forum thread: A little methanol and ignition timing gets 646 wheel horsepower out of the Pure Turbos Stage I upgraded W205 Mercedes-AMG C63 S M177 started by Sticky View original post
      Comments 7 Comments
      1. Bowser330's Avatar
        Bowser330 -
        Can experienced tuners please explain why its safer to add timing than more boost? Is it because, if something goes wrong, the car can save itself and not detonate too much?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Bowser330 Click here to enlarge
        Can experienced tuners please explain why its safer to add timing than more boost? Is it because, if something goes wrong, the car can save itself and not detonate too much?
        @kbaldi29
      1. MR747's Avatar
        MR747 -
        Hrmmm this information is very interesting

        As i was having a talk to my tuner last week to get a little extra power out of my car he was talking exactly this as AMG ecu compensates for a little extra fuel if it detects knock

        I dont really know the ins and outs but sounds similar to what he was talking about

        I wonder if its a new thing that tuners have worked out
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by MR747 Click here to enlarge
        I wonder if its a new thing that tuners have worked out
        Adding methanol and bumping timing has been around forever...
      1. MR747's Avatar
        MR747 -
        I understand this

        I must get the full story and i will report back
      1. kbaldi29's Avatar
        kbaldi29 -
        I think is more a personal choice more than anything, what the tuner considers Is best for each situation, and of course based solely on what car you are working with. In this case, I was looking to increase the HP and try to leave TQ alone, hoping to get a better 60ft at the track. Also, in this car just like previous AMGs, boost is pretty much capped by Ecu/sensor limitations to 22psi, sensors can be offset, fit a bigger sensor and or trick the Ecu to go over the cap, but since we are trying to compare apples to apples, keeping the same boost was part of the comparison process and I'm not gonna lie, tuning a timing curve I believe is easier than bending my head sourcing bigger map sensors or trick Ecu to let boost go out of usual safe zone and keep it under control without risking to spend several hours behind my laptop.
      1. Bowser330's Avatar
        Bowser330 -
        Thank you.