Any difference between 91 and 94 Octane?
02-02-2009, 06:38 PM
#3
Audi Forum - Posts like an A1
Thread Starter
Join Date: Jan 2009
Location: Victoria
Posts: 12
Re: Any difference between 91 and 94 Octane?
Alright I left myself open for that one 
Basically i'm wondering if putting 94 octane is a waste of money, or worse, if it's putting less efficient buring gas in my A4
Basically i'm wondering if putting 94 octane is a waste of money, or worse, if it's putting less efficient buring gas in my A4
02-02-2009, 11:17 PM
#5
Audi Forum - Posts like a TT
Join Date: Feb 2008
Location: waterloo
Posts: 696
Re: Any difference between 91 and 94 Octane?
depends on it you are chipped. With 91 and 94 you really are not going to see a difference. Your cars fuel range will never actulay think its using 94 because it will protect itself and assume a top average of 91. If you use a lower grade, your engine could ping but the computers are smart enough to change the engine timming based on the octane. If you are chipped however you must use the fuel that you have it programed for as the computers willnot change unless you tell them to.
Conclusion, use 91 unless your chipped.
Conclusion, use 91 unless your chipped.
02-03-2009, 08:10 PM
#6
Audi Forum - Posts like an A1
Join Date: Sep 2008
Location: Ottawa
Posts: 29
Re: Any difference between 91 and 94 Octane?
I agree with Sonic, however if your running stock "wanthema" has a point that you'll get better mileage.
I drive down to Syracuse a few times a year, from Ottawa, using 91 I usually get around 700-725 km, i.e. back and forth on the same tank. however with 94, I find myself doing over 800Km.
I drive down to Syracuse a few times a year, from Ottawa, using 91 I usually get around 700-725 km, i.e. back and forth on the same tank. however with 94, I find myself doing over 800Km.
02-04-2009, 03:56 PM
#8
Audi Forum - Posts like an S4
Join Date: Oct 2008
Location: Burnaby/Powell River
Posts: 257
Re: Any difference between 91 and 94 Octane?
my car is chipped with APR. Went to tofino last summer and they only have 91 over there. Had to fill up half a tank to come back and my car has noticeably less power and runs not as smooth as on 94.
02-04-2009, 03:59 PM
#9
Audi Forum - Posts like a TT
Join Date: Feb 2008
Location: waterloo
Posts: 696
Re: Any difference between 91 and 94 Octane?
when you say your car is Chipped with APR, do you have both programs, 91 and 94?
when chipped there is a noticable difference when using 91 vs 94 program....im just really hoping you didnt use 91 well having the car programed for 91...guarantee you did some sort of damage to the valves.
when chipped there is a noticable difference when using 91 vs 94 program....im just really hoping you didnt use 91 well having the car programed for 91...guarantee you did some sort of damage to the valves.
