JKM Dyno-Day - 2nd March....

[Gti_Mad]

I think we should have another SRR day, shall I give Charlie a call and get some dates??? 

Im goin there 2moz for a RR to see if i get low readings again if i do im gettin on2 revo thursday and arrange iva a stage 2+ reflash or goin back 2 stage 2 

[Thor]

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. 

[E30Dom]

God that car looked good! 

[Thor]

God that car looked good! 

Yes it does, very nice inside too on the run down to jkm.

[GrayMK5GTI]

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.  

I agree. Mine made more than stock figures on a stock engine.  

I've said this at least twice in this post  

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. . .

[Mk5 GTian]

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.  

I agree. Mine made more than stock figures on a stock engine.  

I've said this at least twice in this post  

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. . .

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. 

[GrayMK5GTI]

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.  

I agree. Mine made more than stock figures on a stock engine.  

I've said this at least twice in this post  

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. . .

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.  

In all honesty 260 has never ever ever been seen on a stage one GTI (on any rollers - except AMD's  ). Its been well discussed on here that Tuners advertise the highest believable figure to sell their products.

Even 253bhp sounds very optimistic tbh  

Yours was bang on the money for stage one, have a look on JKM's website - most of them make about 235bhp. Last time some poor lad only got 221bhp at stage one.

My stg1 GTI made 248bhp at R-Tech (with pre-cat removed) and 241bhp at JKM, which isn't a million miles away. Nick & R-tech only gets around high 230's / low 240's on his dyno @ stage one (with pre-cat present)

I bet you weren't far off the 285lb/ft though?

As Robin said, your curves are great and it drives well on the road. It's the area under the curve which is important and the reason it drives so well on the road  

I'm not defending JKM as they always seem lower (whether by a bit or a lot) than other tuners. Other dyno operators have suggested JKM use strange settings on the dyno (sorry I don't understand the detail to go into it  ) which may be why tuned cars read low but stock cars don't.

The Haldex situation seems strange as other DD operators can manage it with no problems - again, I'm no expert but other tuners with many years of experience are doing Haldex cars sucessfully.

I'm in no position to question the competency of a garage so I'm not going to 

[chungster]

Why do JKM use TN:3.356

SRR use TN:3.541

??

What is this?

No idea......

It's something to so with the inertia setting

Asked Charlie about this last year - said it doesn't matter in the whole scheme of things.

[Mk5 GTian]

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.  

I agree. Mine made more than stock figures on a stock engine.  

I've said this at least twice in this post  

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. . .

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.  

In all honesty 260 has never ever ever been seen on a stage one GTI (on any rollers - except AMD's  ). Its been well discussed on here that Tuners advertise the highest believable figure to sell their products.

Even 253bhp sounds very optimistic tbh  

Yours was bang on the money for stage one, have a look on JKM's website - most of them make about 235bhp. Last time some poor lad only got 221bhp at stage one.

My stg1 GTI made 248bhp at R-Tech (with pre-cat removed) and 241bhp at JKM, which isn't a million miles away. Nick & R-tech only gets around high 230's / low 240's on his dyno @ stage one (with pre-cat present)

I bet you weren't far off the 285lb/ft though?

As Robin said, your curves are great and it drives well on the road. It's the area under the curve which is important and the reason it drives so well on the road  

I'm not defending JKM as they always seem lower (whether by a bit or a lot) than other tuners. Other dyno operators have suggested JKM use strange settings on the dyno (sorry I don't understand the detail to go into it  ) which may be why tuned cars read low but stock cars don't.

The Haldex situation seems strange as other DD operators can manage it with no problems - again, I'm no expert but other tuners with many years of experience are doing Haldex cars sucessfully.

I'm in no position to question the competency of a garage so I'm not going to 

Ok thanks Graeme.  Where's the torque figure on the print out?

[GrayMK5GTI]

 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 

[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]

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 

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]

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.  

I agree. Mine made more than stock figures on a stock engine.  

I've said this at least twice in this post  

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. . .

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. 

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]

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 -/+.   

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