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JKM Dyno-Day - 2nd March....
rtechniki:
Your cars are the biggest factor for number deviations not the dynos... (But dynos are reading just stupid...)
Your TFSI monsters have 100s of correction maps which basically mean the car will run full power at x air temp, x coolant temp, x egt temp with x amount of timing retard. A car on a dyno with a very slow ramp rate will hit its target load quicker and get hotter faster and end up lot hotter during the power run so the correction maps can easy eat away at 6.4% of the power from running 40-50deg air temp at the manifold vs a correction of zero from running between -9ded - 30deg AIT. Run the same car on a dyno with a very fast ramp rate then the temps and timing pull will be alot lower so the car will run its optimised power from mapping.
The only way to get a true idea of what going on during a power run is log the AIT, corrected load request and timing corrections.
Kennfeld Maximal fuellung Ansaugluft-Temperatur Korrekturfaktor
Map maximum charge air intake temp correction factor
Just the one map above could eat away at 40% of the power is the AITs go above 80deg....
So to sum up, your maps are not one setting for power / load output.
I hope this sheds some light on the dyno debate and I agree with Hurdy and the term Dyno Lottery..lol
wigit:
i thing some people need the Stage 2+ Findus Lasagne remap as that has plenty of horsepower
Mk5 GTian:
--- Quote from: GrayMK5GTI on March 05, 2013, 10:11:02 pm --- It's not mentioned specifically on the graph (like power is), you have to read it off the scale. Something around the 270lb/ft mark with a peak earlier than your power will be your torque curve :happy2:
--- End quote ---
Wow! Just looked at my graph, and it peaks at 290 lb/ft! Not too shabby, and in line with the 292 lb/ft I got at Storm. I'll take that!
R-tech-Nick:
--- Quote from: Mk5 GTian on March 05, 2013, 06:48:18 pm ---
--- Quote from: GrayMK5GTI on March 05, 2013, 06:23:46 pm ---
--- Quote from: Thor on March 05, 2013, 04:12:34 pm ---Surely results arent too far from the mark, my buddies Focus RS made 292bhp 325ftlbs on saturday and we all know the struggle to do the quoted manfacturers 300bhp. :happy2:
--- End quote ---
I agree. Mine made more than stock figures on a stock engine. :grin:
I've said this at least twice in this post :laugh:
Last time James got 378bhp and 450ft/lb - exactly the same as on R-Techs rollers
Both Muckipup and Robin can justify their figures too. . .
--- End quote ---
I know my car is only Stage 1 Graeme, but Revo quote 260 Bhp and 285 lb/ft in their brochure for my car at Stage 1. So 232 can't be right can it? It got 253 at Storm Developments, and their RR has to be within 1 per cent accuracy as it's used for race cars. :confused:
--- End quote ---
Lol the usual 1% accuracy because we tune race cars quote...... No such thing dude, the closest word u can say to accurate is "realistic". There is not one chassis dyno in the land which is accurate are there are so many factors to take into account, one being correction factors applied the the readings based on atmospheric conditions, there are around 6 factors which can be used which on a 200bhp run can vary the power between 7bhp -/+.
Hurdy:
--- Quote from: R-tech-Nick on March 06, 2013, 08:33:54 am ---Lol the usual 1% accuracy because we tune race cars quote...... No such thing dude, the closest word u can say to accurate is "realistic". There is not one chassis dyno in the land which is accurate are there are so many factors to take into account, one being correction factors applied the the readings based on atmospheric conditions, there are around 6 factors which can be used which on a 200bhp run can vary the power between 7bhp -/+.
--- End quote ---
In that case there must be a particularly nasty adverse conditions vortex surrounding JKM's dyno where all the negative forces come together to create the "Low" dyno. On the 2nd of March there must have been "Perfect Storm" conditions. LOL
:signLOL:
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