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Old 11-26-2018, 10:24 PM   #1
iamct01
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Default What do people do when they drive across country

Can you change to a 91 map with still mostly 93 in the tank? Will that Dakota mud oil throw DAM off? Is it even a good idea to take turbo Subaru on long highway trips? Can you get through Nebraska without getting pulled over? Should I floor it in fifth at 1500 to pass people?
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Old 11-26-2018, 10:50 PM   #2
the_saintusa
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Just get in the car and drive.

Check oil.
Add fuel.

Go.

I have zero concerns driving long distances in any of the vehicles I own.
Keep up with maintenance and don't worry about it.

Highway miles are easy on a vehicle.
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Old 11-26-2018, 11:09 PM   #3
jasonwrx86
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Yes you can load 91 map with 93 octane in the tank.
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Old 11-27-2018, 07:08 AM   #4
subaru505
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Doing pulls from 4th/5th is gonna be a real bad time!!
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Old 11-27-2018, 08:18 AM   #5
Loyale93
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Quote:
Originally Posted by the_saintusa View Post
Just get in the car and drive.

Check oil.
Add fuel.

Go.
This...
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Old 11-27-2018, 12:26 PM   #6
RutRut1124
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Quote:
Originally Posted by the_saintusa View Post
Just get in the car and drive.

Check oil.
Add fuel.

Go.

I have zero concerns driving long distances in any of the vehicles I own.
Keep up with maintenance and don't worry about it.

Highway miles are easy on a vehicle.
Agreed. Just drove my 17 STI from Detroit to central California in 4 days back in October. It was actually a fairly decent road trip car.
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Old 11-27-2018, 12:37 PM   #7
Gallo2011
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Quote:
Originally Posted by RutRut1124 View Post
Agreed. Just drove my 17 STI from Detroit to central California in 4 days back in October. It was actually a fairly decent road trip car.
Have you contributed to Bubblegum Alley yet?
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Old 11-27-2018, 01:05 PM   #8
SirBrass
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I'd keep it on a 93 map when you're able to get 93. The first sign you're getting into 91 territory, flash to 91. Or just flash to 91 and go. Going with a map designed for lower detonation resistance is not going to harm your engine when you're running higher det resistance fuel.

Don't floor it in 4th or 5th, unless you're above 3k. And don't pull to redline in those gears either. That's how you get a really severe speeding ticket or a night in jail.

Also, load up on audible audiobooks. That's going to make those long, boring straight passages of road much more survivable.

And if you've never done a long ass road trip before, take note: make use of the rest stops. The long roads will tend to hypnotize you and begin to make you fall asleep. Factor in an additional 3 hours per day to your GPS's estimated ETAs to factor in driver eye rest, food, and "get up a walk" rest breaks at convenient places off the freeway or at rest stops.

I find that I need to take a break about every 3-4 hours of straight driving. Whether that's pulling into a rest stop, leave the engine running and closing my eyes for the next 30 minutes before getting out and walking around and doing stretches for about 5 minutes, or pulling off the freeway and going to the nearest Cracker Barrel for food.

Also, good clean OCI before heading out doesn't hurt if you're headed from one coast to the other, if you'll be within 1k of needing it after you complete your trip on the oil you've got now.

Highway miles are easy on the engine, but the long drive times are harder on the driver.
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Old 11-27-2018, 01:09 PM   #9
RutRut1124
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Quote:
Originally Posted by Gallo2011 View Post
Have you contributed to Bubblegum Alley yet?
I actually haven't! Cruised up and camped in Big Sur this past weekend, will probably make a contribution this weekend after doing some drinking downtown, big fan of Libertine.

I will say I'm thankful for stock wheels on the road trip though. We ran up to the bay area for a meeting the other night and put an unholy bend in a 3 piece forged wheel hitting a buckled expansion joint at way above posted speeds. The joys of 25 series tire life.
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Old 11-27-2018, 03:07 PM   #10
jasonwrx86
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Quote:
Originally Posted by SirBrass View Post
I'd keep it on a 93 map when you're able to get 93. The first sign you're getting into 91 territory, flash to 91. Or just flash to 91 and go. Going with a map designed for lower detonation resistance is not going to harm your engine when you're running higher det resistance fuel.

Don't floor it in 4th or 5th, unless you're above 3k. And don't pull to redline in those gears either. That's how you get a really severe speeding ticket or a night in jail.

Also, load up on audible audiobooks. That's going to make those long, boring straight passages of road much more survivable.

And if you've never done a long ass road trip before, take note: make use of the rest stops. The long roads will tend to hypnotize you and begin to make you fall asleep. Factor in an additional 3 hours per day to your GPS's estimated ETAs to factor in driver eye rest, food, and "get up a walk" rest breaks at convenient places off the freeway or at rest stops.

I find that I need to take a break about every 3-4 hours of straight driving. Whether that's pulling into a rest stop, leave the engine running and closing my eyes for the next 30 minutes before getting out and walking around and doing stretches for about 5 minutes, or pulling off the freeway and going to the nearest Cracker Barrel for food.

Also, good clean OCI before heading out doesn't hurt if you're headed from one coast to the other, if you'll be within 1k of needing it after you complete your trip on the oil you've got now.

Highway miles are easy on the engine, but the long drive times are harder on the driver.
Honestly just load 91 tune and drive. He is not gonna be using all the power on a road trip plus gas quality is hard to predict so why risk it.
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Old 11-27-2018, 04:09 PM   #11
tootru9
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You'll be fine to switch from 91 to 93.
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Old 11-27-2018, 05:08 PM   #12
rtv900
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I don't know why anybody would want to be on a cross country trip and seriously consider changing maps depending on what's available wherever you end up needing gas.
sheesh, for what? The 8% peak power difference at WOT 6000 rpm's?

If you are actually using that power the out of state cops that spot you are going to take you to the cleaners.
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Old 11-27-2018, 05:46 PM   #13
Charlie-III
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Quote:
Originally Posted by the_saintusa View Post
Just get in the car and drive.

Check oil.
Add fuel.

Go.

I have zero concerns driving long distances in any of the vehicles I own.
Keep up with maintenance and don't worry about it.

Highway miles are easy on a vehicle.
Quote:
Originally Posted by Loyale93 View Post
This...
Agreed.

Oil change, bring some extra fluids, minor tools, munchies and drinks.
If sorta modded and going through AZ, NV or CA, maybe swap to a COBB ACN map for your parts.

Longest solo for me was NE NJ to SLC and back (with some deviations). It was 5252 miles round trip. This was sorta around Memorial Day weekend to do the first COBB SLC meet quite a while ago.
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Old 11-27-2018, 06:12 PM   #14
Gallo2011
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Quote:
Originally Posted by rtv900 View Post
I don't know why anybody would want to be on a cross country trip and seriously consider changing maps depending on what's available wherever you end up needing gas.
sheesh, for what? The 8% peak power difference at WOT 6000 rpm's?

If you are actually using that power the out of state cops that spot you are going to take you to the cleaners.
You do realize he's asking because a good portion of the country has 91 octane as the highest grade available. He's on a 93 map now and wants to be able to accomodate lower octane grades. Power gains have nothing to do with his question.
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Old 11-27-2018, 08:46 PM   #15
tokksic
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This is actually a good question that I never thought of. Iím pro tuned for 93 octane. If I ever drive to 91 land, Iím screwed and would have to ask for a special 91 tune from my tuner. Canít run Cobb maps due to the mods I have.
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Old 11-28-2018, 07:10 AM   #16
rtv900
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Quote:
Originally Posted by Gallo2011 View Post
You do realize he's asking because a good portion of the country has 91 octane as the highest grade available. He's on a 93 map now and wants to be able to accomodate lower octane grades. Power gains have nothing to do with his question.
right
then you put on 91 and it works for both
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Old 11-28-2018, 09:24 AM   #17
Loyale93
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Quote:
Originally Posted by rtv900 View Post
right
then you put on 91 and it works for both
This...
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Old 11-28-2018, 03:25 PM   #18
Gallo2011
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Quote:
Originally Posted by rtv900 View Post
right
then you put on 91 and it works for both
Exactly what OP is hoping is true.
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Old 11-28-2018, 03:40 PM   #19
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Quote:
Originally Posted by iamct01 View Post
Can you change to a 91 map with still mostly 93 in the tank? Will that Dakota mud oil throw DAM off? Is it even a good idea to take turbo Subaru on long highway trips? Can you get through Nebraska without getting pulled over? Should I floor it in fifth at 1500 to pass people?
This. This is how you troll NASIOC.
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