Fuel type !!!

[Starmanut]

I have always used the Clear, no Ethanol, gas in my motorcycles and lawnmower. I think it's a couple higher octane than the regular stuff, but that's not why I get it.
My 2010 Touring doesn't pop, but it always has a decel gurgle like sound. I have RamAir and TORS, with the Nels tune. I finally just got to where it's normal to me. (And most will say it IS normal).

 

[TURBO200R4]

Ah? Ok?
What you said "87 will run better" is sort of misleading to anyone who has no clue about octane like OP ( original poster) Kemes. It implies that the other grades of fuel will not run the same. You can always use a higher octane fuel on any engine that that only requires low grade 87. Higher octane rating only means it requires a higher pressure to knock (predetination) and nothing else. There is 0.000% power increase or any other results of using a higher grade fuel except for cost.
I would expect you to know about octane ratings.
Hope I cleared up what I meant to say before.

just my opinion
on the early rockets they are tuned for low octane rating so they wont ping
if an early rocket was tuned (timing advanced) to run on premium then it would run better
mined is tuned to run 87 so it runs better because that is what it is tune for (timing retarded)
i ran premium and when i switched to 87 a could fell a power increase.

 

[Bob R]

Stock exhaust and k&n filter. That’s all. Rest is all stock.

Have you thought of putting in the de-restricting tune that was built quite a while ago, or browse the resources and see if there is something there that would possibly help by enriching the fuel? It may be popping because it is too lean. Just my random musings.

bob

 

[Mongler07]

just my opinion
on the early rockets they are tuned for low octane rating so they wont ping
if an early rocket was tuned (timing advanced) to run on premium then it would run better
mined is tuned to run 87 so it runs better because that is what it is tune for (timing retarded)
i ran premium and when i switched to 87 a could fell a power increase.

Even the full 260 carpenter kits can be tuned and to run on 87. I would love to see a dyno result on that. Going down to a fuel that is tuned for sure can help but this thread was for a stock bike. Hence why I said misleading vs saying wrong. I knew where you were going to go with that.

 

[Gerald]

Even the full 260 carpenter kits can be tuned and to run on 87. I would love to see a dyno result on that. Going down to a fuel that is tuned for sure can help but this thread was for a stock bike. Hence why I said misleading vs saying wrong. I knew where you were going to go with that.

What's the purpose of building a 260 kit and then retarding the timing and de-tuning the engine to run on 87 octane, to stop spark knock and pre-detonation.

 

[Mongler07]

What's the purpose of building a 260 kit and then retarding the timing and de-tuning the engine to run on 87 octane, to stop spark knock and pre-detonation.

I'm not saying they do all the time but they can. #1 cost in fuel, #2 reliability, and #3 power difference is not that much. You can with just a quick update go racing on high test or racing fuel. Then on the week go casual riding on cheaper gas.
There is a video of someone with a dyno sheet for a full carpenter build, 168hp on blend. I have been talking to carpenter lately about getting my busted rocket back up and I'm going to do the 240 kit DIY. I am fully able to blueprint and ring an engine correctly. In the email I asked for kicks of I can dual tune for lower octane. Yes easily. On the 260 kit it's 264hp on 87 and the same torque but 269hp on 94. So there is few and far between id ever run and desire the extra few hp on the 240 build. I'm high altitude and in the email he said I should expect about 242 with the cobra pipes and sidewinder headers and the ram intake with the 240 kit. What would it be with 94? Maybe 246 ish. So yea I don't care. Unless you are running track and drag you should just detune it and run 87 because it's not a big difference.... At least to most casual non professional non competitive riders.
Having a bigger better parts and dialing back the tune just a bit really helps with getting a longer life on parts.
The downside is the area under the curve. Yes it's a little less go but the area under the curve is the bigger picture and the less aggressive rise of that curve. Both have pros and cons. For me I'd rather run 87 and take the hot on power and get longer life on the build.
But to each their own.
You asked I gave the answered.
Imo if you have a need for a stock engine to run correctly on high test when it only needs low test, there is a problem. Just trying to keep on track for OP.

 

[Kempes]

Have you thought of putting in the de-restricting tune that was built quite a while ago, or browse the resources and see if there is something there that would possibly help by enriching the fuel? It may be popping because it is too lean. Just my random musings.

bob

I was thinking about it. Any leads or recommendation?

 

[Bob R]

I was thinking about it. Any leads or recommendation?

I would use Tune ECU. You can go to the top of the main page and click on the resources tab to see if there is a tune inthere that matches the configuration of your bike (or close) and load it up. It may be trial and error but I think it would work.

bob