Octane/ race fuel discussion

[Diesellover]

Different dynos give out different results, hence your findings are worthless, unless you dyno the vehicle on the same dyno each time. :hammerhead:

 

[Nick]

Your findings are of no use unless you use the same Dyno to measure the gains.

Elaborate?

The one constant in your testing should be the instrument used to measure the power out put IE the Dyno.

Im sure one dyno to the next have been set to different calibrations by the various manufacturers, thus resulting in inaccurate readings if you jump between dyno shops.

So in closing you would need to take all the different fuel mixes and test them on the same dyno to boil down the gains or loses.

---

I took my 320i to the same shop and did three runs on the same dyno.
You'll see the results are constant...


RUN1

RUN2

RUN3

 

[sageman]

agree with the guys, need to use the same dyno. i dyno'd at KAR and made 311wkw on pump fuel, then dyno'd at PRT's dyno the next day, same time of day and similar temperature and only managed 287wkw on the same tank of 95.

 

[Kimeran]

But does this not work because of the fact that he is only showing the gains that the OB gave on the same dyno?
So he did a run on pump fuel, then a dyno with OB on the same dyno, showing the gains.

 

[FerdiBotha]

But does this not work because of the fact that he is only showing the gains that the OB gave on the same dyno?
So he did a run on pump fuel, then a dyno with OB on the same dyno, showing the gains.

No stock dyno figures are shown for Boost Juice and the results with Boost Juice are far better than the other products, but there is no way of telling how the figures on that dyno will compare with any of the others.

When doing any mods to my car I always use the same dyno, not because it’s 100% accurate (no dyno is), but because you keep the test instrument consistent, so your gains should be measured as accurate as possible (obviously weather conditions will cause slight variances, but that’s the only factor that cannot stay consistent)

If this whole experiment was done on a single dyno it would be very easy to identify the best OB and move on, but it isn’t that simple at all in this case..

 

[Kimeran]

But does this not work because of the fact that he is only showing the gains that the OB gave on the same dyno?
So he did a run on pump fuel, then a dyno with OB on the same dyno, showing the gains.

No stock dyno figures are shown for Boost Juice and the results with Boost Juice are far better than the other products, but there is no way of telling how the figures on that dyno will compare with any of the others.

When doing any mods to my car I always use the same dyno, not because it’s 100% accurate (no dyno is), but because you keep the test instrument consistent, so your gains should be measured as accurate as possible (obviously weather conditions will cause slight variances, but that’s the only factor that cannot stay consistent)

If this whole experiment was done on a single dyno it would be very easy to identify the best OB and move on, but it isn’t that simple at all in this case..

Agree with that 100%.
However, if I dyno on pump at dyno X and make 100wkw, then dyno with OBX and make 120wkw on the same dyno on the same day, I gained 20wkw.
If I then go to dyno Y and make 120wkw on pump and 150wkw with a different OBY on the same dyno on the same day, I gained 30wkw.
Would that not mean that OBY was better based on the gains?
Surely the gains should stay constant irrespective of dyno?
So as long as you have a before and after dyno, that's what matters. Or am I wrong?

 

[r0ckf1re]

But does this not work because of the fact that he is only showing the gains that the OB gave on the same dyno?
So he did a run on pump fuel, then a dyno with OB on the same dyno, showing the gains.

No stock dyno figures are shown for Boost Juice and the results with Boost Juice are far better than the other products, but there is no way of telling how the figures on that dyno will compare with any of the others.

When doing any mods to my car I always use the same dyno, not because it’s 100% accurate (no dyno is), but because you keep the test instrument consistent, so your gains should be measured as accurate as possible (obviously weather conditions will cause slight variances, but that’s the only factor that cannot stay consistent)

If this whole experiment was done on a single dyno it would be very easy to identify the best OB and move on, but it isn’t that simple at all in this case..

Agree with that 100%.
However, if I dyno on pump at dyno X and make 100wkw, then dyno with OBX and make 120wkw on the same dyno on the same day, I gained 20wkw.
If I then go to dyno Y and make 120wkw on pump and 150wkw with a different OBY on the same dyno on the same day, I gained 30wkw.
Would that not mean that OBY was better based on the gains?
Surely the gains should stay constant irrespective of dyno?
So as long as you have a before and after dyno, that's what matters. Or am I wrong?

Maybe if posts the power run from 95 only at SOX it would help.

 

[FerdiBotha]

Agree with that 100%.
However, if I dyno on pump at dyno X and make 100wkw, then dyno with OBX and make 120wkw on the same dyno on the same day, I gained 20wkw.
If I then go to dyno Y and make 120wkw on pump and 150wkw with a different OBY on the same dyno on the same day, I gained 30wkw.
Would that not mean that OBY was better based on the gains?
Surely the gains should stay constant irrespective of dyno?
So as long as you have a before and after dyno, that's what matters. Or am I wrong?

You’re 100% right there.

At the end of the day the gain with OB1 was 28kw and E80 was 33kw, so E80 seems to be better, albeit marginally.

Now when you throw Boost Juice in the mix, you all of a sudden sit with a 40kw gain over the second best OB. To some this may look like a clear win, but without a 95 run to refer to this is merely a campfire story as you cannot possibly know what the car would’ve done on stock fuel.

Based on the results I would go for the second best OB as there is clearly a 33kw improvement over stock. Boost Juice could possibly only yield a 5kw improvement for all we know, so I wouldn’t buy that without doing a 95 run.

 

[Kimeran]

Agree with that 100%.
However, if I dyno on pump at dyno X and make 100wkw, then dyno with OBX and make 120wkw on the same dyno on the same day, I gained 20wkw.
If I then go to dyno Y and make 120wkw on pump and 150wkw with a different OBY on the same dyno on the same day, I gained 30wkw.
Would that not mean that OBY was better based on the gains?
Surely the gains should stay constant irrespective of dyno?
So as long as you have a before and after dyno, that's what matters. Or am I wrong?

You’re 100% right there.

At the end of the day the gain with OB1 was 28kw and E80 was 33kw, so E80 seems to be better, albeit marginally.

Now when you throw Boost Juice in the mix, you all of a sudden sit with a 40kw gain over the second best OB. To some this may look like a clear win, but without a 95 run to refer to this is merely a campfire story as you cannot possibly know what the car would’ve done on stock fuel.

Based on the results I would go for the second best OB as there is clearly a 33kw improvement over stock. Boost Juice could possibly only yield a 5kw improvement for all we know, so I wouldn’t buy that without doing a 95 run.

Ok cool, I get you. Completely agree there. I didn't pay much attention to the BJ (haha!) gain, because of no before run on pump fuel.

 

[HitokiriZed]

Agree with that 100%.
However, if I dyno on pump at dyno X and make 100wkw, then dyno with OBX and make 120wkw on the same dyno on the same day, I gained 20wkw.
If I then go to dyno Y and make 120wkw on pump and 150wkw with a different OBY on the same dyno on the same day, I gained 30wkw.
Would that not mean that OBY was better based on the gains?
Surely the gains should stay constant irrespective of dyno?
So as long as you have a before and after dyno, that's what matters. Or am I wrong?

You’re 100% right there.

At the end of the day the gain with OB1 was 28kw and E80 was 33kw, so E80 seems to be better, albeit marginally.

Now when you throw Boost Juice in the mix, you all of a sudden sit with a 40kw gain over the second best OB. To some this may look like a clear win, but without a 95 run to refer to this is merely a campfire story as you cannot possibly know what the car would’ve done on stock fuel.

Based on the results I would go for the second best OB as there is clearly a 33kw improvement over stock. Boost Juice could possibly only yield a 5kw improvement for all we know, so I wouldn’t buy that without doing a 95 run.

I would go one further and relate the proportional gains at each dyno. Since the Dyno figures cannot be related the absolute gain can't be either.

That being said OB gave a 9.9% gain, and E80 11.6%. E80 FTW!

 

[whoop_ass]

so stock car zero tuning
only so much timing can be advanced with OEM software

 

[vwfourlife]

But does this not work because of the fact that he is only showing the gains that the OB gave on the same dyno?
So he did a run on pump fuel, then a dyno with OB on the same dyno, showing the gains.

No stock dyno figures are shown for Boost Juice and the results with Boost Juice are far better than the other products, but there is no way of telling how the figures on that dyno will compare with any of the others.

When doing any mods to my car I always use the same dyno, not because it’s 100% accurate (no dyno is), but because you keep the test instrument consistent, so your gains should be measured as accurate as possible (obviously weather conditions will cause slight variances, but that’s the only factor that cannot stay consistent)

If this whole experiment was done on a single dyno it would be very easy to identify the best OB and move on, but it isn’t that simple at all in this case..

Agree with that 100%.
However, if I dyno on pump at dyno X and make 100wkw, then dyno with OBX and make 120wkw on the same dyno on the same day, I gained 20wkw.
If I then go to dyno Y and make 120wkw on pump and 150wkw with a different OBY on the same dyno on the same day, I gained 30wkw.
Would that not mean that OBY was better based on the gains?
Surely the gains should stay constant irrespective of dyno?
So as long as you have a before and after dyno, that's what matters. Or am I wrong?

Maybe if posts the power run from 95 only at SOX it would help.

Sorry didn't do 95 run