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Old 12-19-2007, 01:34 AM   #1
bObby
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Default Moving to AZ. I have a question about 91 octane

First week of January, I will be living in Chandler. I have a decently modded wrx. It has a VF23 with a TiAL 38mm wastegate setup. It was tuned on 93octane here in Ohio.

My concern is when I get there, would I be able to get away with using 91 octane with octane booster or maybe even a mix of race fuel?

I am pretty sure it's going to pick up knocks with the 91 so I just want to figure a way to get away with 91 octane somehow until I part my turbo setup out and return it back to stock. I'm not really looking to get tuned if Im parting out sometime within a month after I settle in.


Let me know what you guys think.



Bobby
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Old 12-19-2007, 01:43 AM   #2
John2.5RS
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There's a Gas station just off of Chandler Blvd. that sells 100 oct. at the pump. you can mix that with 91 for a while, should be fine.
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Old 12-19-2007, 01:43 AM   #3
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I went 93 to 91 on my old rex w/o issue. But it was was still stock...

Id say get it tuned. but till then you Prolly could get away w/ some oct. booster.

Edit:
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Originally Posted by John2.5RS View Post
There's a Gas station just off of Chandler Blvd. that sells 100 oct. at the pump. you can mix that with 91 for a while, should be fine.
yeah but last time i got the 101 it was like 5.99 Gal... and now its More... long run cheaper for a tune.
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Old 12-19-2007, 01:44 AM   #4
rudeboy_sti
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Before my tune I ran a 100/91 octane mix to curb the detonation. I was stock however. I don't see why you couldn't though. If you look in the regional faq, you will find locations for 100 octane. Since you will be in Chandler, I would look into "In The Zone" off of Ray road or Chandler Blvd I think. Its around 44th street I believe.

May I ask why you are returning to stock? Leaving the Subaru club?

Good luck on the move.
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Old 12-19-2007, 01:57 AM   #5
bObby
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Quote:
Originally Posted by rudeboy_sti View Post

May I ask why you are returning to stock? Leaving the Subaru club?

Good luck on the move.

Well... not sure how I want to say it. I love the Subaru club but I like going fast. I know I can try to keep dumping money into a bigger turbo and all but I think Im going to do up an Evo. I've been around Buschur Racing for quite some time now and with the progress they keep getting. I think that is the best car for me at the moment. I can easily build a high 10 sec street evo so that's the route Im looking at right now. Unless you somehow pursuade me to keep my wrx's.

Believe me, I thought about keeping the wrx and slap on a rotate mount gt30r kit since I have the JDM STi 6spd tranny in already but then again, It's going to run what? like maybe a low 12- high 11?


ps- Im not leaving the Subaru crowd. Hope you guys don't mind seeing an Evo at the meets
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Old 12-19-2007, 02:12 AM   #6
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How long do you think a 10-sec street car is gonna last on the streets of Phoenix? A 10-sec evo is still a Mitsubishi.....Nuf said.
If it's gonna be your DD, I can't imagine a 10-sec. setup being very good on the streets. Where is the power band going to be? Most 10-Sec. setups i've seen are barely streetable, and not very good in traffic, or at stop lights. They're usually all or nothing in the power department. What exactly is your budget for your project? That plays a big factor in what to go with.

Last edited by John2.5RS; 12-19-2007 at 02:18 AM.
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Old 12-19-2007, 02:15 AM   #7
bObby
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It's not going to be daily driven and if it breaks, then it breaks

Im going to debadge it and put Subaru on it. Maybe it might last a few months long
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Old 12-19-2007, 02:30 AM   #8
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Oh, if it's not a DD, then it should last a little while. Subaru's aren't very good drag cars either, not saying they don't do well. Just the gearing and aero package aren't exactly setup for the 1/4 mile.
I'd say invest the money, and wait until the GT-R comes out next Summer. Should Run 11's out of the box, and it appears that they're not running alot of boost from the factory. Getting rid of the stock runflats and installing some drag radials could help, as could a catless exhaust, retune for Some race gas or Alcohol injection, and Crankin' Da boost! should do the trick. As long as someone can crack the Transmission code and re-program it for high torque output, should be able to get it in the 10's, no problem. and It's got the Aero package to do it safely and efficiently. But you may need to install a cage, just to be safe.

Just an idea.
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Old 12-19-2007, 01:06 PM   #9
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at least you are coming in the winter.. it would be waaaaay worse in the summer time al-ah 300 degrees
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Old 12-19-2007, 02:11 PM   #10
bObby
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Im coming in January, when should I expect the really hot heat to come by? March?
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Old 12-19-2007, 02:37 PM   #11
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usually late may.....
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Old 12-19-2007, 06:12 PM   #12
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look up AMS' comparison of their 06 sti and their equally modded evo's. sti certainly tops it on whp and tq. if you want a drag car, i would skip either, but the evo is the better choice with the 5 spd ratio.
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Old 12-19-2007, 06:28 PM   #13
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New STIs have a better gear ratio now, the 06+, I'd look into that and yeah with 120 degree summers you'll be lucky to hit 13s
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Old 12-19-2007, 08:55 PM   #14
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Quote:
Originally Posted by sunnyniazi View Post
New STIs have a better gear ratio now, the 06+, I'd look into that and yeah with 120 degree summers you'll be lucky to hit 13s
No, 07+ only. 06's did not receive the updated gear ratios.
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