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What did you do to your mk7 today?

C

cool_username

Passed Driver's Ed
Location
Charlotte, NC
6_speed_GTI said:
I put gas in mine :D



Anyone notice a major difference between 87 and 91? It's probably one of those questions that gets asked all the time, but I searched and didn't find an answer. Car is totally stock, and will probably stay that way except for maybe an intake and some cosmetics.
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My understanding (via car talk) is that it's best to use whatever you're tuned for. A 1.8t like mine, tuned for 87, wouldn't see any benefits from 93 (unless it were knocking for some reason). GTIs are tuned for 93, no?


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6

6_speed_GTI

New member
Location
Madison, WI
Car(s)
2016 GTI 6 MT, Black
cool_username said:
GTIs are tuned for 93, no?
Click to expand...

That's exactly what I'm trying to determine. Inside the fuel door says 87 and 91.

I'm not sure if there are different ways to calculate that or what, but for now I'm going to stick with the highest octane I can get at your average gas station.

I've heard the same thing about turbos - run premium gas (other people I know had an Audi 1.8L turbo that needed premium to run correctly as well). This is the 2.0L by the same manufacturer, so I imagine it's very much the same.
 
C

cool_username

Passed Driver's Ed
Location
Charlotte, NC
6_speed_GTI said:
That's exactly what I'm trying to determine. Inside the fuel door says 87 and 91.

I'm not sure if there are different ways to calculate that or what, but for now I'm going to stick with the highest octane I can get at your average gas station.

I've heard the same thing about turbos - run premium gas (other people I know had an Audi 1.8L turbo that needed premium to run correctly as well). This is the 2.0L by the same manufacturer, so I imagine it's very much the same.
Click to expand...



Huh, I see. Wasn't aware. I'd stick with the higher octane then for safety


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D

donp

Ready to race!
Location
Georgia
6_speed_GTI said:
That's exactly what I'm trying to determine. Inside the fuel door says 87 and 91.

I'm not sure if there are different ways to calculate that or what, but for now I'm going to stick with the highest octane I can get at your average gas station.

I've heard the same thing about turbos - run premium gas (other people I know had an Audi 1.8L turbo that needed premium to run correctly as well). This is the 2.0L by the same manufacturer, so I imagine it's very much the same.
Click to expand...
If you're stock, VW says you can run 87 but it will reduce engine output and efficiency. If you're tuned you already know you need 91 or higher.
 
B

Blizzard884

Passed Driver's Ed
Location
Cornwall, UK
Fit the new wheels today...


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H

hi_centered

New member
Location
Wa
Visited it at the dealer, had to make sure they were fixing what needs to be fixed.
 
Sandman GTI

Sandman GTI

Drag Race Newbie
Location
Tennessee USA
6_speed_GTI said:
I put gas in mine :D

Anyone notice a major difference between 87 and 91? It's probably one of those questions that gets asked all the time, but I searched and didn't find an answer. Car is totally stock, and will probably stay that way except for maybe an intake and some cosmetics.
Click to expand...

More carbon build up on 87 maybe.
 
imthanick_a

imthanick_a

Autocross Champion
Location
Ohio
Washed, waxed, detailed, and installed tow hook license plate mount (not in that order)


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