All Things Mk5 > Performance Modifications

GTI Stage 1. Dyno'd 274HP worried this is too much

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pudding:

--- Quote from: mub on April 01, 2021, 11:25:12 am ---Should I be worried about the stock turbo or the stock clutch? I read somewhere that the k03 turbo is only rated for 300hp which I assume is measured from the crank. My 274hp is measured at the wheel which translates to over 300hp at the crank. Is this right? Should I be worried?

I think I might get an independent Dyno done to check the power.

--- End quote ---

Not quite that much.  The K04 can only flow enough for 330hp.  And that comes from Borg Warner themselves. 

Rolling roads are merely a tuning aid to measure changes.  The numbers they churn out are usually nonsense when it comes to remaps.

The only way to accurately measure engine power is to remove it from the car and strap it to an industry standard rig.   There are too many variables when the engine is turning a gearbox, flywheel, road wheels, brakes and a heavy roller + the dyno operator fudging the coast down numbers to turn a customer's frown into a smile.

mub:
I read that lots of things can impact a Dyno score. Lot least how tightly the car it strapped down.

Either way I had a call with the owner of the place that did running and Dyno. He says we were told wrong, and the 274hp figure is at the crank not the wheels. He will be in on Tuesday and will send us the graphs then. I feel less stressed now.

pudding:
Indeed, wheel spin is another factor.

Another factor is gearing.  Gearboxes are torque multipliers, which is exactly why measuring engine power at the road wheels is dumb.

Anyway, 274 @ the crank is very healthy for a K03  :happy2:

CrimsonsGolf:
Where did you get your map done from?

Thanks

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