M135i Stock - Dyno run @ KAR

[Quick///M]

Hey Guys

My stock m135i made 211.1wkw today :rollsmile: Quite happy with stock figures. My focus ST 225 was full stage 2 when it made 208wkw. Lots of room to play in terms of potential future mods

 

[131GAV]

Hey man... Nicely done,

out of interest, how come the dynos show a NA vehicle? Surely that has something to do with the correction factor etc when working out the power/torque?

I have no clue how dynos work but was just curious.

 

[Quick///M]

Hey man... Nicely done,

out of interest, how come the dynos show a NA vehicle? Surely that has something to do with the correction factor etc when working out the power/torque?

I have no clue how dynos work but was just curious.

bud wish i could answer this, but i can tell you it was always set to NA even since 2011 when i dyno'd my first st

 

[Dion-ZN]

Good figures.
my ST back in the days made 237wkw.

but the 135 / 335 is a totally different beast. :thumbs:

 

[Dangz_335]

I was wondering the same thing, could anyone elaborate on wkw and kw. Ones at the crank ones at the wheels? correct me if im wrong. How would you convert one to the other??

 

[Crash_Nemesis]

Ah man... thats awesome. I miss the coastal air for my car. These NA cars lose so much power up here.



Hope you enjoying it and congrats.

 

[nawti1]

nice bud, mine did basically the same 212wkw at KAR....after JB4 and DP.....I now doing 240wkw at KAR on 95

 

[sageman]

nice figures bud! :thumbs:

 

[Crash_Nemesis]

I was wondering the same thing, could anyone elaborate on wkw and kw. Ones at the crank ones at the wheels? correct me if im wrong. How would you convert one to the other??

You are correct. One is at the crank/flywheel. One is at the wheels. The drive train is what is accountable for the difference. The Engine needs to send it's power through the gearbox, propshaft, differential and then finally move the wheels. This causes a loss of rotational force, as this is spent to spin these objects. This is called drive train loss.

The drive train loss is mostly a guesstimate. Usually about 13-15% for Rear Wheel drive cars, but in some cases it has been seen to be higher. Front wheel drive cars suffer less drivetrain loss. Usually around 5%. I stand to be corrected on these values, but this is what I have found to be the average.

Using my car as an example.
My e46 M3, before all the major mods and engine build, with the previous owner, did a 224wkw down in Cape Town. Some e46 M3's have made less, some around the same, but it's usually about 215 - 220wkw. The engine is rated at 250kw. So, you can calculate the drive train loss to be about 12-14% with those figures. Seeing as every dyno is different, we cannot confirm this to be 100% correct. To get a proper 100% calculation, you need to know exactly what the power is on the engine/flywheel and on the wheels at the same time. By having both these figures, you can correctly calculate the drive train loss. Not all Dyno's are equipped to do this, so most places use the industry "standard" of 15% loss for rear wheel drive cars, hence why the figure of 224wkw may be optimistic or it may be fair in relation to my car's power. We don't know for sure as the previous owner of my car never did a flywheel kw test on the same day. So, the engine may have been running higher than 250kw. 15% of 224kw is 33kw. So, if anything, the engine was probably on 258kw on the day. We cannot be certain. Hence why the 15% is a guideline and not a fact.

Remember, dyno's are used as a tuning tool. No two Dyno's are the same.

 

[Quick///M]

Ah man... thats awesome. I miss the coastal air for my car. These NA cars lose so much power up here.



Hope you enjoying it and congrats.

Thanks Bud, i am really enjoying this car always puts a smile on my face:thumbs:

---

nice bud, mine did basically the same 212wkw at KAR....after JB4 and DP.....I now doing 240wkw at KAR on 95

Nice power man!! How does the down pipe sound ? Are you happy with the current more there is still a lot more to tap into with the right modes

 

[Chavoos]

Good figures



Sent from my iPhone using Tapatalk

 

[Magneto]

Nice. Do the N55 135i and the M135i have the same tuning potential?

 

[Shaun m]

:thumbs:
Good figures, I think these cars should do close to 300wkw with the stock turbo after a few good mods. .
Bmw is way to strict on mp :yuck:

 

[Twinz]

Good figures for sure :thumbs:

 

[nawti1]

DP sounds crazy........:rollsmile:

 

[Tareeq]

Nice and strong bud :rollsmile: :thumbs:

 

[UpNcOmiNg!]

That is some properly impressive figures at KAR man! Congrats! :thumbs:

 

[Schalk94]

Well done, great figures:thumbs:

 

[Dangz_335]

Thanks Crash much appreciated

 

[K33G4N]

Howzit Crash, your stock E46 m3 made 224 wheel kw?? :-O