ecutek road mapping??

**Aj Scoob** · 25-03-2010, 06:27 PM

Im just looking for info on how the mapping of the cars with JGM is able to produce figures i am on the DTD irl site and there is a massive debate on how the figure are being made up and basically taking the **** out of road mapping

i just want the correct info so i can post it up there to shove it in thire faces

Cheers guys

Andy

**Resintooth** · 25-03-2010, 07:30 PM

Are you talking about the delta dash figures?

**Big Red T** · 25-03-2010, 07:53 PM

Road mapping gives the correct air available for an engine at a given speed and under a given load. Rollers cannot provide the same air flow as you get on the road and the air speed. Try sticking your hand out the window at 100mph and see what happens .
As far as i am aware these delta dyno figures are as near as approximate,if you read the dyno plots they are full of peaks and troughs which is undulations in the road, a slight dip meaning you may spike the power figure and a slight uphill may read under where on the rollers these plots should look pretty smooth. I would take a straight line through these peak spikes on the dyno plots as being the average figure of peak power that would most likely be achieved on the rollers.

**Aj Scoob** · 25-03-2010, 08:01 PM

cheers lads bit more info there for them to suck on they seem to be very bias to the rollers

**Stu** · 25-03-2010, 08:51 PM

Some info here for the DYNO queens, the Rolling roads in this country all give different readings so RR are not that accurate either but they do give similar results.

Road mapping gives real time results, be interesting to see who is mapping there cars as im yet to find a decent name in mapping in Ireland yet.

Deltadash is more accurate than say tuning box as it takes more info/input

DeltaDash On-Road Dyno Testing

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**Aj Scoob** · 25-03-2010, 09:13 PM

cheers stu ill pass it on seems they think the RR is the only way to go

**scoobyman555** · 25-03-2010, 09:29 PM

is there not something about tyre pressures with RR ?? could be wrong

**Stu** · 25-03-2010, 09:33 PM

Originally Posted by scoobyman555

is there not something about tyre pressures with RR ?? could be wrong

Yep and the base settings ie floor pan, whole load of things.

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**scoobyman555** · 25-03-2010, 10:04 PM

when i had the skyline i went to 2 rr days 363bhp & 450 bhp i think it had to do with the polish

**Stu** · 25-03-2010, 10:10 PM

Originally Posted by scoobyman555

when i had the skyline i went to 2 rr days 363bhp & 450 bhp i think it had to do with the polish

The Polish get everywhere, hadnt realised they were operating RR aswell

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**scoobyman555** · 25-03-2010, 10:50 PM

Originally Posted by Stu

The Polish get everywhere, hadnt realised they were operating RR aswell

lol

**stevieturbo** · 26-03-2010, 10:05 AM

Deltadash is as fallable as any rolling road. All you have to do is fill in the wrong numbers, and the output changes. Just the same as with most rolling roads. ( although rollers wont have inclines, wind or vehicle weight differences affecting readings ) Give the customer a high number and they are happy, give them a low number and all hell breaks loose, suddenly their car is broken. Either way, both systems are open to manipulation to make happy customers.

So ALL such figures can be taken with a pinch of salt.

All that really matters is how the car performs. Or genuine before/after results with runs carried out under exactly the same conditions to see what gains there may have been.