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Old 09-20-2012, 08:35 AM   #26
cmiovino
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So this gas millage is normal? I mean I might expect to gain a few more MPG as the Computer gets more used to the 93, but I can't see it busting 300miles, even if I used 14 gallons?
12.25 gallons only got me 250 miles = 20.4 MPG... and that's not even exact numbers you're giving us.

20.4 is normal. That's what I get commuting to work and back, staying out of boost. Hills + traffic + stop signs/lights ever 5 feet = killer. And I've seen worse, so I can't complain.
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Old 09-20-2012, 10:45 AM   #27
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I get anywhere from 21 mpg to 30mpg depending on conditions.
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Old 09-24-2012, 10:15 PM   #28
Djimpreza02
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12.77 gallon put in, and I got 293 miles off of it.
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Old 09-25-2012, 02:42 AM   #29
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Lead foot accounts for most of my fuel dropping, most wrx owners understand.
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Old 09-25-2012, 07:21 AM   #30
Djimpreza02
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Well, it's my GF's DD, but I think she gets that now.

That, and I think the computer went through it's 100 miles learning period too.
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Old 09-25-2012, 03:36 PM   #31
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Put 91 in. Switch as soon as you can. If you get misfires/codes, through some octane booster in. Prolly want to reset the computer after you fill up with 91 fully, maybe wait till the second tank to be safe. It should say on the gas cap to put in 91.
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Old 09-25-2012, 03:46 PM   #32
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Pretty much everything I've read has said that octane booster does nothing. I'd just get her to drive very carefully till the take is mostly done, then fill it up with highest octane you can buy.
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Old 09-25-2012, 03:54 PM   #33
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It helps, how much it helps is debatable. Ideally, the OP should through a couple gallons of race gas in. Or E85. Anything to raise the octane level of the tank for safety. Hm... maybe just use some 100LL avgas...
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Old 09-25-2012, 04:40 PM   #34
Djimpreza02
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Well 93 is what is mainly around here, 91 can be found, but not often.

As far as race gas, I don't need it, and don't see why I would.
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Old 09-25-2012, 05:58 PM   #35
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do not throw e85 in a tank full of gas with a stock tune. just fill it up with 93 and stop worrying about it.
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Old 09-25-2012, 07:13 PM   #36
Djimpreza02
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That's what I'm doing.

But there is always someone to come around and say you need race gas for some reason.
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Old 09-26-2012, 01:01 PM   #37
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You want the highest octane fuel you can put in the car. Use 93.

Since you clearly don't know much about turbo cars OP, I'll fill ya in on a lil secret. Low octane fuel will cause detonation. Detonation will destroy (aka "blow up") your engine. It won't cause detonation all the time or at all loads, but it will happen. You engine can only take so much detonation before a catastrophic failure occurs.

I'm shocked you don't have cel's already on the car showing that's it's missfiring/having issues. Have you even checked?? I filled up with 87 once and I had instant misfiring codes, loss of power, etc. Even while trying to stay out of boost.

Adding a higher octane fuel or octane booster to the car is a SAFETY FACTOR to prevent detonation until you can fill up fully with 93.

Also, adding a couple gallons of E85 to a tank of pump gas does the same thing. It raises the octane level. This has been done for years with out being "tuned" specifically for E85, it's such a limited amount it doesn't matter. People have actually ran 50/50 pump gas/E85 with out tuning with no issues (except added performance of course).

I know ya all are newbs, but damn. Seriously

Last edited by rexblake; 09-26-2012 at 01:33 PM.
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Old 09-26-2012, 07:50 PM   #38
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I know ya all are newbs, but damn. Seriously
yeah...just mutha****ing yeah
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Old 09-26-2012, 08:12 PM   #39
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Guys I've been using 93 now for a week or so, I just stumbled across this, and saw someone telling me to use race gas, sorry, but I don't need race gas.

Mixing in a little E85 might be something to think about, but I'm fine on 93 for right now. Plus, Waterford is the only place to get E85 out a pump in CT, as far as I know right now.


And the check engine light never came on when I used 87 a few times, and from reading around, I also find it weird.

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Old 09-26-2012, 09:57 PM   #40
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http://www.fueltechexperts.com/2008/...which-is-best/

Tested on a actual knock engine to get exact numbers on ocatane increase using the RON rating scale. some boosters can get as much as. I've seen some other tests that showed even more gains with different boosters but they actually do work. so if you keep a bottle with you and cant get anything but a tank of 89 you good to go.
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Old 09-27-2012, 09:22 AM   #41
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Quote:
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do not throw e85 in a tank full of gas with a stock tune. just fill it up with 93 and stop worrying about it.
This.

93 FTW. That's why gas stations carry it.
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Old 09-28-2012, 12:46 AM   #42
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This.

93 FTW. That's why gas stations carry it.


jesus.....just jesus
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