Vadim @ evosport

After a number of delays we are finally able to start M271 tuning. To make this task easier we have aquired a 2005 C230 for development use.

Stock our C230 made 168 RWHP and 175 RWTQ.

Next on the testing schedule is fully dampened larger crankshaft pulley. The prototype is complete and will be tested within next several days.

Stay Tuned!

mig888

get some intercoolers on that bad boy under development too. . Happy to see this is actually getting underway.

flip

btw: auto/stick? mileage?

drexappeal

Thanks for the update, Vadim!

str8clownr

dude this is good stuff... yea definitely do what mig said and try to get a front mount, thats something id definitely buy with the pulley.

richardsayzz

i cant wait for this to complete! keep us updated

Vadim @ evosport

Thank you gents for support. Here are front and rear pictures of the prototype crank pulley.

It utilizes internal inertia damper ring and should add around 2-3 psi. Our C230 is going back on the dyno today or tomorrow for final results.

As far as intercooling, a number of members tried bigger and better core on their 2.3L and did not see much of an improvement. Stock core is fairly large.

M45 Eaton in the end is what is going to be a limiting factor of around 250 FWHP.

mbny

so if all goes well, when can we get our hands on the pulley? i'm doing ECU and pulley around october/november and i really don't want to wait any longer. i made the mistake of waiting around for certain manufacturers to finally release engine mods for my 330 and wound up not really getting my hands on them until more than halfway through my lease.

Vadim @ evosport

Once testing is complete, availability should be within a month. So it will definitely be before October.

mbny

now that's what i like to hear

any rough numbers as to what type of potential gains?

vraa

Ask tomorrow, it looks like the car goes back on the dyno today or tomorrow, so by tomorrow they should have a 'press release'

Man that looks look, why blue though?

CitronC230K_03

expect 20-30hp. those are the rough numbers everyone gives.

like ricky.agrawal says, id wait for the official numbers after the car gets from dyno.

Buellwinkle

Good job Vadim, that's one fine looking pulley. Are you going to change other pulleys like Kleemann did with the waterpump pulley? Also are you going to change/adjust the FPR like Kleemann to fix any A/F ratio issues? My only issue with the bright color is I don't like attracting attention to mods to the dealer so for me, even though it's not as pretty, the closer to stock looking the better.

BabyBenz6spd

Vadim, What type of Transmission did the Dynoed C230 have? 6speed manual or 5 speed Automatic? (And Which gear was used to dyno the car?)

Buellwinkle

You can tell from the dyno it's a 6 speed, the manual would have shifted at least once.

1Lop2K5C

Are you going to be releasing any software prog that goes with this pulley ?

otoupalik

We will have the other pulleys done also. A/F ratios will be dealt with through software tunign by our partner Powerchip.

Thanks for the words of encouragement!

Thanks,
Brad

Vadim @ evosport

Production pulleys will be black, just like factory. The picture is a prototype.

Jim Banville

Well, what were the results?

ctC230K

hmm those numbers are pretty far from my dyno... apparently my car is 177 RWHP and 147 RWTQ. How does your car make so much more torque but less horsepower? Our graphs don't even look similar... can someone explain?

BTW for some reason my graph is off by 800rpm.

Burnt Toast

are you sure you dont have the numbers switched? its odd how you would have more HP then TQ.

otoupalik

Something is REALLY wrong with those dynos. As you said, your RPM's are off. See where the TQ and HP cross, it is like 6500, when it needs to be 5250. 5250 is where TQ and HP cross (it is a mathmatical formula). You know this, as you stated it, but with something that far out of whack, I would question the whole chart.

Get them to re-do it for you!

Thanks
Brad

r3v1ls

Hey can you guys explain to me how Dyno'in the car works? I know that it calculates the rwhp but that's about it. What gears do you go through on the dyno? And how would that work on an auto? And what's that mathematical formula about the TQ and HP crossing? It makes sense to me just i never heard of it . Sorry if this i getting a lil off topic

vraa

torque * RPM * constant = hp

87.5 lbf-ft * 60 rev/min * X = 1 hp

X = 1 / (60 * 87.5) = 1/5250

torque * RPM * 1/5250 = hp

That's all I remember from physics.
Physics II in a few months, I am screwed.

hp = (torque * RPM) / 5250

ctC230K

i don't know but i paid $85 for it!!! these guys really know what they're doing, how did they screw this up? they tune tons of cars every day... here's the whole page.

Buellwinkle

It really does cross at 5,250, what's throwing you off is the scale on the left and right are different. So if you look at the HP and Torque at 5,250, they are the same, at just under 140 HP & lbs/ft torque. Never seen a dyno where the scales were different like that, throws you off but the dyno is probably not calibrated correctly if it's skewing HP and Torque like that. A dyno can only measure torque and HP is a calculation off torque. There are lots of variables in setting up a dyno and that's why every dyno is different, even Evosports numbers seem a little high since a typical manual trans car has a 12-15% driveline loss but every car is different, every day is different. I bet if Evosport ran their dyno today during the middle of the day with the temps in the 90's vs. an early morning run last week in the high 60's it will read lower.