Dyno Tune & Fuel Question

[khsonic03]

Looking for opinions on this. I just installed a Gen5 Whipple on my 2017 GT. Going in this Friday for a dyno tune and I'm trying to decide if I should add Boostane or just leave it on pump gas (93).

I don't plan on running Boostane normally (I will be driving this car several times per week), so I would think it makes sense to not add Boostane so I get a true tune based off the fuel I'll be using day-to-day. However, I've seen people on here say to always add octane booster when going to the dyno so there are no fuel-related issues. Just concerned that the Boostane might mask issues that would otherwise be there without the additional octane boost.

Also considering the fact that it's winter gas. For the "safest" tune, should I add Boostane or not?

Thanks

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[Zinc03svt]

That is unfortunately a risk you take pushing psi on pump gas. I personally will never run boost on a coyote without E85/methanol for safety. Good luck.

 

[EFI]

Unless you plan on running this Boostane all the time, it is definitely a BAD idea to get tuned on it then run plain 93.

You can always ask whoever is tuning your car to provide you multiple tunes, for example one with and one without the Boostane. That way when you do want to go fast and have the stuff, you run the big boy tune, but when you're just putting around on straight 93 you can run the base tune.

 

[khsonic03]

Thanks EFI - that answers my question and is what I was thinking as well.

 

[Bluelightning]

Definitely tune it on 93 if that is what you are going to drive it on. Run boostane afterwards to protect yourself against bad gas.

 

[fastblue5.0]

you could tune the car on 93 but you can ask your tuner to make a 93/boostane / race fuel file for you for race days , i have a 93 tune and 93 plus boostane/race fuel and and a e85 tune . 17, 18 and 21 degrees of timing respectively .

 

[jrsimon27]

Why not get 2 tunes one only on 93oct and the other 93oct plus boostane?

 

[khsonic03]

Thanks all. I'll probably take the 2-tune approach. I guess what threw me off was a post on here where I read that you should always use octane booster during a tune to ensure there won't be any fuel issues, because "fuel inconsistencies" is one of the first things a tuner will point to if there are issues while tuning.

 

[Burkey]

Using booster when tuning on the dyno is the equivalent of tuning for 91 with 93 in the tank. No idea why anyone would do it.

 

[crcpdx]

Using booster is the equivalent of tuning for 91 with 93 in the tank. No idea why anyone would do it.

I tuned for 91, use 92 oct gas and a shot of boostane every tank. The reason is to protect the engine from bad gas. I also have a race gas tune for the track. i figure on the street its better to be safe than sorry. Do you really need the extra 25hp for a street tune?

 

[Burkey]

I tuned for 91, use 92 oct gas and a shot of boostane every tank. The reason is to protect the engine from bad gas. I also have a race gas tune for the track. i figure on the street its better to be safe than sorry. Do you really need the extra 25hp for a street tune?

Yes, but you didn’t tune the car on 93 when you plan to drive it on 91, which is what I was trying to say.
Edited original comment for clarity.

 

[beefcake]

if your not planning on adding it , then no reason to add it for "glory pulls"

 

[khsonic03]

On this topic, other than lambda and knock, do you guys monitor any pids on ngauge to catch early on if you got a bad tank of gas? I see OAR as an option, but not exactly sure what I should be looking for there. It seems like it "learns" and adjust tables, which doesn't seem like it would be an early indicator of bad gas.

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