Unleaded vs Super unleaded

[monkeyhanger]

Matt your wasting your time explaining it. Placebo effect will always win over scientific knowledge 

Or VW engineering development and set-up. 

[remlapeel]

https://youtu.be/WTaBngvsPrc

I'll just leave this here, and help fuel the fire a little more.

[monkeyhanger]

https://youtu.be/WTaBngvsPrc

I'll just leave this here, and help fuel the fire a little more.

So the "best" premium fuel gave 2.1% more hp than the worst, but will on average cost 9% more right now than standard RON95, one of the 3 premium fuels gave no discernible gains over the 2 standard fuels and no mpg data was available.

Is the MK6 GTI in ED35 tune officially recommended to use RON95 or RON98? How quickly will the cars ECU adapt properly to change in fuel to be using it optimally? Not the complete story from that flawed experiment.

[Poached]

https://youtu.be/WTaBngvsPrc

I'll just leave this here, and help fuel the fire a little more.

So the "best" premium fuel gave 2.1% more hp than the worst, but will on average cost 9% more right now than standard RON95, one of the 3 premium fuels gave no discernible gains over the 2 standard fuels and no mpg data was available.

Is the MK6 GTI in ED35 tune officially recommended to use RON95 or RON98? How quickly will the cars ECU adapt properly to change in fuel to be using it optimally? Not the complete story from that flawed experiment.

MK6 GTI setup for 95 RON,the older EA113 based engines in the 6R/ED35 retained the existing 98 RON recommendation.

If you run a modified ECU or a tuning box, super unleaded will give more scope for gains.

The Dyno runs in that video were filmed at RTECH.

[remlapeel]

I do love the 95vs98/99 octane debate. I used premium in mine to keep the engine clean. I wasn't expecting it to start spitting fire. Obviously when it was mapped it's a totally different story.

With the R only V power goes near it.

[JoeGTI]

The choice is easy here in Ireland. You use regular unleaded or you walk 

Super unleaded hasn't been available here for as long as I can remember. That tells you all you need to know. VW / Audi / BMW retail the exact same GTI's, R's, RS4's, M3's as they sell to you guys. We "make do" with ordinary unleaded and it works just fine.

[remlapeel]

The R will pull back on power though as its specifically tuned to use 98minimum.

[Organisys]

  "Dyno Runs"

We all know how accurate they are !

[Poached]

"Dyno Runs"

We all know how accurate they are !

True, some are better at operating them than others...

The video itself doesn't show any 'surprise' results but you'll often read 'yeh yeh the published figures must be under quoted' .

[GeoBog]

In fairness I have tried both and mpg/performance wise I haven't noticed any difference. The only difference that I could notice between Shell regular(95RON) and V Power Nitro (99RON) is the sooty exhaust pipes with 95RON. The soot builds up slower on them with 99RON. Thank God for Cif Lemon that keeps them as new after each wash.