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JB1 on 87 octane?
- Thread starter Vrrm11
- Start date
Golfs everyday
Autocross Newbie
- Location
- USA
Is that even safe to do? Seems like the engine will retard timing due to not enough octane (maybe defeating the purpose of installing a JB1).
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JB1 creates more power by increasing boost. The difference between regular gas and premium gas is low/higher octane. Octane represents fuel's resistance to burning, or its flash point. 87 octane will burn more easily/has a lower flash point than 91+ octane fuel. When you increase pressure (which is what the JB1 does), temperatures rise as well, leading to an increased likelihood of preignition when running low octane 87 fuel.
In other words, if you want more power, you cannot have your cake and eat it too with respect to shitty fuel. If you're willing to spend a few hundred on a piggyback to increase power, be willing to spend the extra $5/tank on premium. Shit I'm stock and I use premium.
You're a stock GTI, so you should be using premium.
Golfs everyday
Autocross Newbie
- Location
- USA
Right I usually post in a question form not to offend the op and to get him thinking.
yirayira
Go Kart Newbie
- Location
- Chicago, IL
- Car(s)
- 2015 GTI SE
Ideally but 87 is the recommended minimum from VW and is perfectly safe on the stock tune.
Diggs24
Autocross Champion
- Location
- de plains! de plains!
- Car(s)
- 2015 GTI
Put it on 3.0 and run a log. Let's see how it does.
Look, we want you to express yourself, okay? Now if you feel that the bare minimum is enough, then okay. But some people choose to use higher octane and we encourage that, okay?
Diggs24
Autocross Champion
- Location
- de plains! de plains!
- Car(s)
- 2015 GTI
People can get 87 octane anywhere, okay? They go to the gas station for the ethanol and the attitude. Okay? That's what the higher octane's about. It's about fun.
yirayira
Go Kart Newbie
- Location
- Chicago, IL
- Car(s)
- 2015 GTI SE
You know what, I do want to express myself, okay. And I don't need 37 pieces of flair to do it.
cuda2000
New member
- Location
- Fort Myers, Fl
- Car(s)
- 2017 Golf SW 4motion
I have a 2017 Golf sportwagen 4motion 1.8 stock turbo with jb1 since 5,000 miles and it has 16,000 now. I ran it or 2 tanks of gas on 87 octane at +3 map1 just to see what it was like and it ran fine, with a little more pep but nothing like 93 octane map 6 at +5.5. For 2 months I turned it off (map 0) while i taught my 16 yr old daughter to drive. Now I have it back to map 6 and 93 octane. My only issue, is that with the boost cranked up, once in a while at slow speed (25 mph), when I let off the gas I get a very loud squawk noise from the turbo area. It almost is as loud as a tire squeal. That can't be good?
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cuda2000
New member
- Location
- Fort Myers, Fl
- Car(s)
- 2017 Golf SW 4motion
It would need logging to figure out if the computer was retarding timing or not. I have not done any logging. It does not make sense to increase boost just to have it knock/ping and then the computer retards the timing back to stock. Is it worth $400 to screw around with? Nah. But I only paid $250 For used jb1, so I mess with it when I have time.
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