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Old 05-10-2012, 09:35 PM   #1
quickgtp
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Default How to tune for 2900 ft?

I just moved to Tucson from So Cal. So I am basically going from sea level to 2900 ft where I live in Sahuarita. I can feel a difference in the car and would like to get e retune plus it has been like 6 years since my original. I know there are several tuners in Phoenix but the elevation is closer to sea level then 3,000 ft. This is not intended as a discussion on what tuner to use it is about whether or not it is worth doing the retune if it is not done at elevation. I know I am not at 10,000 ft or anything but I do feel it is making a difference.

cliff notes
Tuned at sea level now live at 2,900 ft whats best way to get retuned? Is it going to Pheonix or doing open source back and forth over internet or something I have not considered? Thanks
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Old 05-11-2012, 11:16 AM   #2
dan az
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doing open source yourself is best, 150 for a tactrix cable.
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Old 05-11-2012, 11:24 AM   #3
quickgtp
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Dan thanks for the response. While I am car guy and am comfortable working on my car I'm not realy comfortable tuning my car. I have an OBDII cable that has a USB that I used on my last car but I don't think it is tactix as it is over 10 years old. I am hoping with the right software maybe I can download logs and send them to someone. I would love to just put it on a Dyno to get it 80% there then send some follow up logs or something. Better yet I would love to find someone who still does Utec tuning so I could do the double map. ANy other ideas or experiance in doing this would be appreciated.
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Old 05-11-2012, 11:43 AM   #4
dan az
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unfortunately you pretty much have to have a tactrix cable, but honestly you really probably dont need to do anything tune wise going from sea level to 2900,
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Old 05-11-2012, 12:50 PM   #5
TwinscrollGT35R
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You should retune just based on switching to az gas alone. Your ecu should have compensation tables for altitude. But your tune could be better.
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Old 05-11-2012, 01:05 PM   #6
aggie113
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I went from Dallas to Clovis NM, around 4300ft and my tuner said the car could take care of the change itself.
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Old 05-11-2012, 05:16 PM   #7
quickgtp
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Thanks for all the feedback everyone. Still not sure what I am going to do. But I am at least not soo stressed about doing something immediately.
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Old 05-13-2012, 10:02 AM   #8
ktmrider
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Quote:
Originally Posted by aggie113 View Post
I went from Dallas to Clovis NM, around 4300ft and my tuner said the car could take care of the change itself.
This is the case "however" the tune itself is still the Base for timing, AF, etc.

His tune from SoCali is likely quite conservative due to the craptastic 91 octane swill they get from the pump. A bit more timing and leaner A/F ratios for the higher altitude would certainly be noticable. Keep a copy of the CA map in case you return.

If you move around enough investment in a Tactrix cable is money well spent. You could then work with a non-local tuner via email. For someone in the general vicinity Cameron of camtuning.com fame is hard to beat IMO, heck could even mean a road trip to ABQ for a meet!
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Old 05-13-2012, 01:17 PM   #9
TwinscrollGT35R
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Albqu is 5500 ft. This would be no better then his current tune. Also does the OP still have a working barro sensor?
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Old 05-13-2012, 01:47 PM   #10
ktmrider
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Quote:
Originally Posted by TwinscrollGT35R View Post
Albqu is 5500 ft. This would be no better then his current tune. Also does the OP still have a working barro sensor?
No you're missing the point, his BASE TUNE could use a tweak BECAUSE it's calibrated for CA fuel and altitude. 91 octane and sea level = ultra conservative BASE TUNE ( that holds all the target AF and timing stuff ).

Why do you think Cobb AP maps carry a specific CA-91 file?!? Compare and see.

From an detonation standpoint it's fine, performance not so much.
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Old 05-13-2012, 09:18 PM   #11
dan az
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ca 91 and az 91 is the same piss water fuel.
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Old 05-13-2012, 11:24 PM   #12
ktmrider
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Quote:
Originally Posted by dan az View Post
ca 91 and az 91 is the same piss water fuel.
Sigh, last comment.

Altitude = less oxygen density = less detonation = more agressive base tune options.

CA + 91 octane + sea level = less agressive base tune options.

OP is asking about why his car feels different at the 2900ft level of Tucson, ONLY reason I suggest he mod his current base map that he's targeted to SoCal. Yes the ECU will adjust for altitude, yes the engine should have no issues, and yes a re-tune for Tucson will would likely yield a better running car.
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Old 05-14-2012, 09:22 PM   #13
quickgtp
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Thanks again guys. So for now I am just going to wait out summer as I am no longer afriad of damaging my car. Then after summer do an agressive retune.
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Old 05-15-2012, 12:44 AM   #14
brocksdad
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Why are you no longer afraid of damaging your car? I would be if I was you. Coming from a place where average summer temps are ~85* to a place where average summer temps are ~110* is a huge difference.
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Old 05-15-2012, 02:16 AM   #15
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Quote:
Originally Posted by brocksdad View Post
Why are you no longer afraid of damaging your car? I would be if I was you. Coming from a place where average summer temps are ~85* to a place where average summer temps are ~110* is a huge difference.
So I guess by your philosophy, All of us that are driving around on winter tunes. Should be blowing up left and right because we are now on summer gas and the 110* heat??

I'm thinking he will be just fine with his plan. The ecu will learn and correct as he goes.

Socal gas and Socal temps are very close to here. While it may not get 110* everyday in Socal. It does happen more then a few times in the year. And I do not think the Subaru world in Socal stops driving on those days because someone in SWIC said they should be afraid. Maybe I should tell Mickey Mouse he needs to take his fire truck to Toon Town to get remapped too. I hope he has a CobbAP so he can swap maps on the fly during the parade.

No need for scare tactics to make money.
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Old 05-15-2012, 02:40 AM   #16
yman
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The point is that a tune is a lot cheaper than a motor, and although the temps might only be 25 degrees hotter, under hood temps can be far greater. If he's easy on it and doesn't go WOT in the daytime then yea, he'll be fine but if it gives him peace of mind then I would say go for it (and also install any little things you've been waiting to put on as well).
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Old 05-15-2012, 02:47 AM   #17
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Its going to make no difference. He will be just fine. You are not going to blow an engine because its a hot day out. Unless the old tuner blindfolded his ECU, He will be just fine till he decided to get it re-tuned down the road.

He's just driving the car to work. Not running a race or pulling a 5th wheel trailer.
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Old 05-15-2012, 03:02 AM   #18
yman
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Well, I don't know his car or his mod list so I wouldn't make that assumption, but yes, you are saying the same as me as long as he's not beating on it it's gonna be fine.
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Old 05-15-2012, 03:09 AM   #19
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Quote:
Originally Posted by TwinscrollGT35R View Post
So I guess by your philosophy, All of us that are driving around on winter tunes. Should be blowing up left and right because we are now on summer gas and the 110* heat??

I'm thinking he will be just fine with his plan. The ecu will learn and correct as he goes.

Socal gas and Socal temps are very close to here. While it may not get 110* everyday in Socal. It does happen more then a few times in the year. And I do not think the Subaru world in Socal stops driving on those days because someone in SWIC said they should be afraid. Maybe I should tell Mickey Mouse he needs to take his fire truck to Toon Town to get remapped too. I hope he has a CobbAP so he can swap maps on the fly during the parade.

No need for scare tactics to make money.
Who's trying to make money??? I simply stated that he should get his car tuned for the different climate. I never said that I needed to tune the car or it would blow up.

And you're right, I do recommend getting a summer tune and a winter tune. When I tune someones car in the winter, I always tell them to come back and we'll run the car again when it gets hot. I NEVER charge for this. I would rather be safe than sorry when it comes down to the longevity of the car.
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Old 05-15-2012, 03:14 AM   #20
brocksdad
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To add to my above post, I would even look at the car for free and give my recommendation on whether to tune or not tune. I would be willing to sit down and show why it did or did not need the tune.
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Old 05-15-2012, 11:38 AM   #21
quickgtp
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I really appreciate all the input. If there was tuner here in Tucson I would probably go get it done just because I enjoy my car running at its best. As far as making it out to Pheonix to get tunes it just isn't going to happen for a while due to time issues more then money issues. As it is it is summer here I have no intention of driving the car hard in the heat...well not for any period of time anyway I just can't help it when getting onto the freeway sometimes. My set up is fairly tame Zilla 18G TD-05, PE-650, APR DR 750 FMIC, APS CAI CAI, Vishnu up-pipe and Vishnu signature series (divorced wastegate) TBE. Those are just the big ones other stuff is done as well. Thanks again for all the input. Look farward to meeting some of you when the temps drop and tracks open.
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Old 05-15-2012, 12:27 PM   #22
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B.T.W. Spoke with a buddy this morning that works for he fuel companies. There is no more winter/summer blend fuel as of last year. Year around 10% ethanol for the state of Arizona.
He said there was a few stray mom and pop stores still holding out. But they are far and few..
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Old 05-15-2012, 06:57 PM   #23
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Quote:
Originally Posted by quickgtp View Post
I really appreciate all the input. If there was tuner here in Tucson I would probably go get it done just because I enjoy my car running at its best. As far as making it out to Pheonix to get tunes it just isn't going to happen for a while due to time issues more then money issues. As it is it is summer here I have no intention of driving the car hard in the heat...well not for any period of time anyway I just can't help it when getting onto the freeway sometimes. My set up is fairly tame Zilla 18G TD-05, PE-650, APR DR 750 FMIC, APS CAI CAI, Vishnu up-pipe and Vishnu signature series (divorced wastegate) TBE. Those are just the big ones other stuff is done as well. Thanks again for all the input. Look farward to meeting some of you when the temps drop and tracks open.
There are some tuners in Tucson. Head over to AZAWD.org to check them out.

EDIT: I'm not in Tucson, still not trying to make money.

Last edited by brocksdad; 05-15-2012 at 07:03 PM.
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Old 05-15-2012, 08:26 PM   #24
03.dub.r.x
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Quote:
Originally Posted by brocksdad

There are some tuners in Tucson. Head over to AZAWD.org to check them out.

EDIT: I'm not in Tucson, still not trying to make money.
*irrelevant to the subject*
id like to give you money when my car is ready still no response for tune pm sent.
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