1st Step of M271 Pulley Kit development Complete!
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Blimp
1st Step of M271 Pulley Kit development Complete!
So i went to Evosport last night and got the car baseline dyno'd on the house. They are going to start developing performance parts for the M271 motors, To start a Pulley kit for the SC.
Anyway, these are the numbers we got on a stock car.
We got 159.7 whp and 163.5 tq on a cold run
We then did a second run and the car due to heat and/or real world issues lost about 6hp/5tq.
On the third consecutive run without rest we pulled in 150 whp/155wtq
We then did an open air box run and gained about 6whp...
That's a nice gain from an open air box! anyway, i will be going to back in about 3 weeks to get the prototype pulley kit in and run some dyno's.. I'll let you all know how that goes.
oh, and Evosport will also design a new intake system for the car. 6hp gain is impressive!
-Danny
Anyway, these are the numbers we got on a stock car.
We got 159.7 whp and 163.5 tq on a cold run
We then did a second run and the car due to heat and/or real world issues lost about 6hp/5tq.
On the third consecutive run without rest we pulled in 150 whp/155wtq
We then did an open air box run and gained about 6whp...
That's a nice gain from an open air box! anyway, i will be going to back in about 3 weeks to get the prototype pulley kit in and run some dyno's.. I'll let you all know how that goes.
oh, and Evosport will also design a new intake system for the car. 6hp gain is impressive!
-Danny
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Joined: Apr 2003
Posts: 792
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From: Las Vegas
2003 C230 K , 2001 ML320
Which pullies are they going to change? If they need another test mule, I am close enough. They did a great job on my C32 front brakes.
I believe the only pullies that can be changed are the alternator ( to turn slower and use less power) made larger, and the crank pulley, made larger to turn the supercharger faster. There are issues with the M271 fitment as some pullies are already very large.
I can easily believe the heat issues, the intercooler is not large enoughand gets heat soaked easily on the M271. A good dyno development of intercooler upgrade would sell a lot of new intercoolers for Evosport!
I believe the only pullies that can be changed are the alternator ( to turn slower and use less power) made larger, and the crank pulley, made larger to turn the supercharger faster. There are issues with the M271 fitment as some pullies are already very large.
I can easily believe the heat issues, the intercooler is not large enoughand gets heat soaked easily on the M271. A good dyno development of intercooler upgrade would sell a lot of new intercoolers for Evosport!
Super Member
Joined: Aug 2004
Posts: 810
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From: Illinois, Indiana
2005 C230 Sedan 6spd
Also, Does air/fuel ratio (ECU) or infact any other computer needs to be reprogrammed after pulley has been swapped? Since More boost, usually means more fuel is needed for the extra air going into the engine. 
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From: The blue white rock, third out.
2002 C230 Coupe(M111)
Originally Posted by aries palmiotto
What would happen if your engine blows or your supercharger freezes???
I hate BS posts like this.
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Blimp
well, what they realized when looking at the stock intake box was the fact that the upper cover is really restrictive. So they are probably going to design something w/ that in mind (maybe a new upper cover, and an intake filter, or even a full intake set up. That's what i was under the impression might happen..
I'll keep you all posted as I learn more about their plans!
-Danny
I'll keep you all posted as I learn more about their plans!
-Danny
