Real numbers

[zmatt]

I took my car to the dyno today to see what it really made after the mods





That equals roughly 216hp and 229 lb/ft of torque at the crank. This was with intake and catback only. But, and this is a very big, full bodied and round but, my a/f was dangerously lean by redline. Until I can get that sorted I'm keeping her below 5000 so I don't blow her up.


Moral of the story, the M111 responds very well to bolt on mods going from 185 crank stock to 216 and 200lb/ft stock to 229 that's 31hp and 29 lb/ft.

Also worth mentioning, this was on a dyno-dynamics which reads 12% lower than a dynojet on average but is a better dyno for tuning.

[SD202]

would like to see someone do this with the m104 but not bad for almost stock

[SD202]

would like to see someone do this with the m104 but not bad for almost stock

[zmatt]

Added boost and AFR sheet. As you can see the blower makes a constant 6 psi spiking to about 8 or 9 at the redline. Under boost the afr should be between 11 and 12, early on it reads so rich the prob can't track it and then at the redline it reads very very lean. I will be getting a tune to fix this and hopefully a nice dollop of power will come with it.


edit: if you are wondering why it starts at 3000 rpm, automatics dont like to play nice.

[Yujin]

So the mods really did do something. Outstanding. I was thinking of a catback, any suggestion? or a high flow resonator from Magnaflow.

Thanks for being the one to get the results and pay for it, now there is concrete proof to all the 'mods dont do shit' conversation that floats in the performance forum for the C230K

Im also curious to see if a better Fuel Pump, Fuel Injector and Chip will do to it, as well as the pulley without going all out on a Turbo.

[zmatt]

No problem man. I live for this kind of thing. When I get my tune in the next few weeks I expect another healthy bump in power. I'm hoping for 190whp. As you can see the AFR is seriously messed up so there is a lot of lost power.

A tune would definitely help at this power, and that's the next bit, but instead of getting a new chip I have through a great deal of trouble figured out how to reflash our stock ecus. Once that happens it will be making more power than any non-amg 202 (save for the turbos) and may even be as fast as a C36 depending on how much we can squeeze out of her.

As for fuel delivery Paul would be a better person to ask. At the point I am not at risk of maxing the stock injectors or fuel pump. In fact I would argue that the only way to max them out on the M111 would be a larger kompressor or a turbo. The stock blower, even with a pulley and my other mods won't max out the stock fuel system.

This week my tuner is looking at the software I found and they will start working on a map. Then when the hardware to interface with the ecu is in we will put her on the dyno again and finish the map and have more numbers. I will update this thread when I have results.

[Yujin]

Interesting, I look forward to the results man. Once I start getting some income, I'll be heading in the direction you're in. ECU Tune, Catback and probably a pulley if I ever get precise info on it.

Does your guy do shipping? I wouldnt mind paying the extra money for shipping and for solid results.

[zmatt]

They do, they also can email tunes to you over the web. Although best results will be with a dyno tune, they probably wouldn't have any problem selling you my tune when it's done.