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cryo

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Here ask this question to your tuner.

 

You: How much atmospheric pressure is sustained on Earth?

 

Tuner: 14.7 Pounds Square Inch. That's where a set my wideband for stioch at sea level to tune your vehicle.

 

You: Now, take your left or right hand and accelerate velocity until contact with face is reached.

 

Lesson Learned

 

 

Click Here for you none believers |

\/

 

Source: http://www.windows2universe.org/earth/Atmosphere/atm_press.html

 

Lets Return to the Topic

 

I don't know how to say this without coming off like I'm being mean...

 

http://i267.photobucket.com/albums/ii287/bac52/B81C97EB-EF71-4483-BDD0-B1310A349D8A-3644-00000216A0060E9A_zps8783a444.jpg

 

The things you've said in your last two posts just might be some of the stupidest things ever written on this board.

 

Atmospheric pressure has nothing to do with stoichiometry.

 

I have no time to teach you remedial chemistry, but I trust you can read.

 

http://en.wikipedia.org/wiki/Stoichiometry

[URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard
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Bac is 100% correct, stoich and patm are not even close to the same thing.

 

Stoich changes based on fuel being used. Patm changes based on....well.....patm..:)

 

Thanks

 

Dave

[sIGPIC][/sIGPIC]

Providing unmatched customer service and a Premium level of Dyno/E-tuning to the Community

 

cryotuneperformance@yahoo.com

facebook.com/cryotuneperformance.

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Just a little input 14.7 PSI is the pressure pushing against Earth all the time. Yes if it wasn't for that pressure we would all explode from nothing holding the body together. Which 14.7 is considered a perfect combustion of what ever carbon you might be burning. If it wasn't for us wanting to run dinosaur liquids through engines your oil wouldn't turn black. Your exhaust wouldnt have carbon build up. Just some knowledge. Soo how you you tune for other fuels. Propane, Coal, Diesel, E85 is being used and is understood how to tune.

 

http://i41.tinypic.com/apd2qp.gif

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The things you've said in your last two posts just might be some of the stupidest things ever written on this board.

 

This. Note that competition for this title is pretty stiff.

Obligatory '[URL="http://legacygt.com/forums/showthread.php/2008-gh8-238668.html?t=238668"]build thread[/URL]' Increased capacity to 2.7 liters, still turbo, but no longer need spark plugs.
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Dave, how lean do you typically like to go for AFR under full boost on 93 octane?

 

That's a hard question as there are a lot of variables like is the car used for road race, dragstrip etc. Does the car run a stock tmic or upgraded tmic/fmic etc. What kind of timing is being ran etc. I dont really like to try and make power by leaning it out till I see issues, on the dyno I have seen very little power difference between "safe" and "unsafe" afrs.

 

Dave

[sIGPIC][/sIGPIC]

Providing unmatched customer service and a Premium level of Dyno/E-tuning to the Community

 

cryotuneperformance@yahoo.com

facebook.com/cryotuneperformance.

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IME power drops off rapidly below 10.8 AFR, but doesn't increase so dramatically when going leaner. So, I shoot for 10.8 on cars that are run hard for extended periods, have sub-optimal intercooling, run often in high ambient air temps etc. Cars that have easier / better lives I tune to 11.0 or 11.2 if they have headroom in intercooling. Every tuner has his/her own preferences.
Obligatory '[URL="http://legacygt.com/forums/showthread.php/2008-gh8-238668.html?t=238668"]build thread[/URL]' Increased capacity to 2.7 liters, still turbo, but no longer need spark plugs.
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LC1 Wideband 02 sensor- One of the most common options for people right now, Bosch sensor, logworks software and cheap guage options as well.

 

Dave

 

Does this one come with all the neccessary cabling to input the AFR into your laptop while logging with romraider for example?

 

Im looking at this one exactly:

 

http://www.innovatemotorsports.com/products/lc1.php

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Although that info is helpful, please refrain from copying/pasting others hard work into the thread and link it to said site instead.

 

Thanks and have a great day

 

Dave

[sIGPIC][/sIGPIC]

Providing unmatched customer service and a Premium level of Dyno/E-tuning to the Community

 

cryotuneperformance@yahoo.com

facebook.com/cryotuneperformance.

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  • 1 month later...
So probably been covered but my gauge jumps all over the place from 14 ish to 20 on idle but when driving I will let off the gas and it goes red to 20. What's the deal. Oh ya its an innovative. Sorry new to Subaru's and this things all done up
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  • 2 weeks later...
  • 2 weeks later...
  • 2 months later...

Dave,

 

I enjoy your write ups. I appreciate the effort you put in to explain the concepts of tuning and how/what they affect our cars.

I've been using an Innovate LM-2 for tuning local cars requiring a wideband. I like the handheld readout and logging. Its treated me well as a portable solution for tuning cars' without a wideband already installed.

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Does this one come with all the neccessary cabling to input the AFR into your laptop while logging with romraider for example?

 

Im looking at this one exactly:

 

http://www.innovatemotorsports.com/products/lc1.php

 

I'm not sure how I missed this, sorry about that.

 

Normally all that's needed is a serial to usb adapter OR a laptop with a serial port already built in *Dell is good for that*

 

Wiring up the LC1 to the car is per the instructions.

 

-Logan- Glad to hear you enjoyed it, I think it helps people to understand in simple terms.

 

Dave

[sIGPIC][/sIGPIC]

Providing unmatched customer service and a Premium level of Dyno/E-tuning to the Community

 

cryotuneperformance@yahoo.com

facebook.com/cryotuneperformance.

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  • 3 weeks later...
i'm stage 2 tuned with an 11.1 afr (downpipe only) and it put down pretty good numbers. but it's not any faster than the cobb stg1 map from the ap. i'm making 300wtq at 3300rpm and 248whp at 4900rpm. yet at the drag strip, it fails to trap over 100mph. should i have my tuner re-tune it, or take it somewhere else?
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Well I'm assuming your referring to the stock 02 sensor readings when you say 11.1 which is the lowest it can read so true afr's are actually unknown.

 

What were the differences in trap speeds between your stage 1 cobb tune? regular trap speeds for a stage 2 car are about 98-102mph from what I have seen. I doubt its directly related to your afrs.

 

Did you have it dyno tuned and that's where the numbers came from? what was your base line?

 

There are a lot of variables to consider but a stage 2 custom tune should run quite a bit different than a cobb ots map.

 

Have you spoke with your tuner about your concerns?

 

Hope that helps.

 

Dave

[sIGPIC][/sIGPIC]

Providing unmatched customer service and a Premium level of Dyno/E-tuning to the Community

 

cryotuneperformance@yahoo.com

facebook.com/cryotuneperformance.

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i went from running a 13.5 @101.2 stock, down to 13.8 @99 stage 2. yes, it was dyno tuned and the base numbers were 228hp @5600rpm and 265tq @3600rpm on a dynapack.

my tuner is currently at VIR, so when he comes back, i'll have it checked over and possibly revised.

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  • 1 month later...

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