I guess useful info to have would be:
1. The Brand and Type of Dyno used. Dyno's use different methods to calculate power, some give accurate wheel HP numbers, other give accurate engine power numbers, some give torque, others don't.
2. Date and temperature (dyno should adjust for atmospheric conditions but still good to know for those that don't)
3. Modifications
One thing that seems to be a common fact with these engines, they very rarely give the factory quoted 444HP. My Dyno operator, a German guy who's spent many years working with Audi engines said "this will make 426Hp" and as you will see bellow, he was on the money.
Maha LPS 3000 AWD.
These dyno's give very accurate engine HP and torque figures although their loss numbers will seem alarmingly high and wheel numbers very low. They are industry standard for VAG.
7th Jan 2016 / 11am / 25'C
Car was completely stock with approximately 19,000Km on the clock, car loaded onto the dyno, several bags of sand loaded into the trunk for ballast and the car strapped down, checked the tire pressures were at factory settings.
[IMG]
[/IMG]The car made 425.8HP and 410Nm there was a strange bulge in the torque at 4500rpm that we couldn't explain and didn't repeat on any other run, possibly the car adjusting to running on the dyno?
We then allowed the car to cool and didn't move it from the dyno. Installed the Eventuri intake with the car still on the dyno.
13:44 / 27.8'C
[IMG]
[/IMG]With the intake installed the power jumped up to 450HP and the torque increased slightly to 415Nm, the strange bulge in the torque had flattened out. I wish we had done a second run with OE intake to see if this bulge was an anomaly, the operator had never seen an RS5 do it before. if you look how the torque curve was tracking it would make the Eventuri gains seem normal.
Run 3
13:47 / 28'C
[IMG]
[/IMG]Power has now settled to 446.7HP and 425Nm
Eventuri gained 21.1HP and 15.6Nm
We decided to allow the car to adjust to the intake for a week and then bring it back for a final dyno run.
Same dyno, same tire pressure check and same ballast in car, I did have to fill the car on the way as it was empty by now so that could not be kept a constant, I filled with 98RON but driving to the dyno shop the car felt very sluggish, like they feel on a hot day when everything is being pulled back.
18 Jan 2016 / 15:21 / 28'C
[IMG]
[/IMG]446.9HP and 417Nm, the power is the same as previous but the torque is down slightly. It could have been the fuel, we will never know but once that tank was used up and filled again, it felt back to it's healthy self.
[IMG]
[/IMG]Car on the dyno in OE specification form as it used to be many years ago.
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. And too bad you didn’t do another dyno back to the stock setup to eliminate any chance of an anomaly. Would have sole me at that point.
Originally Posted by Murazor
Carbon Ceramic Brakes, JHM Stage 2, JHM 2.75” catback exhaust, K&N filters, 034 inserts (all of them), Alu Kreuz, carbon fiber splitter/side mirrors/ECS spoiler/rings
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