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RX8 Compression Calculator for Android

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Old 12-21-2011, 05:41 AM
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RX8 Compression Calculator for Android and iPhone/iPod

Dear all,

I've created a simple utility for Android for Renesis compression adjustment (based on previous work of teknics and IOANNIStsa).

Don't expect anything fancy though.
The utility is only useful for adjusting a compression, don't expect any rating such as IOANNIStsa's.

Here it is: https://market.android.com/details?i...tionapps.rx8cc

Cheers


Update:
The iPhone/iPod version has been approved by Apple and can be found here
http://itunes.apple.com/us/app/rx8-c...7863?ls=1&mt=8
Attached Thumbnails RX8 Compression Calculator for Android-mzl.xvjpkjay.320x480-75.jpg   RX8 Compression Calculator for Android-mzl.hbjktpep.320x480-75.jpg   RX8 Compression Calculator for Android-screen1_2.png   RX8 Compression Calculator for Android-screen2_2.png  

Last edited by virusakos; 04-14-2012 at 05:28 AM. Reason: Added link for iPhone/iPod app
Old 12-21-2011, 06:16 AM
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What about iPhone?
Old 12-21-2011, 06:21 AM
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Developing apps and having them pushed to the market for the iphone is like trying to pass a kidney stone. Sure, eventually it works out, but boy is it a painful process.
Old 12-21-2011, 09:40 AM
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Originally Posted by LifeAfterRx8
What about iPhone?
Already working on it, but as paimon.soror said, getting Apple's approval might be a painful process, so be patient and fingers crossed
Old 12-21-2011, 11:10 AM
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It might be easier for you guys to go get Android phones.
Old 12-21-2011, 11:24 AM
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you could just keep a pic of the OE diagram too, it's not like you will use it daily or anything and it's not exactly rocket science to reference the point quickly just by sight ...

but then I don't own an electric can opener either
Old 12-21-2011, 07:49 PM
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my compression tester tells me my compression numbers and converts them to 250 rpm on the fly ... oh wait
Old 01-18-2012, 10:06 AM
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Originally Posted by virusakos
Dear all,

I've created a simple utility for Android for Renesis compression adjustment (based on previous work of teknics and IOANNIStsa).

Don't expect anything fancy though.
The utility is only useful for adjusting a compression, don't expect any rating such as IOANNIStsa's.

Here it is: https://market.android.com/details?i...tionapps.rx8cc

Cheers

I'm confused... what else is needed for this to work besides the app?
Old 01-18-2012, 11:49 AM
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Originally Posted by virusakos
Already working on it, but as paimon.soror said, getting Apple's approval might be a painful process, so be patient and fingers crossed
First let me say, I'm clueless on this process but...
What about if we are jailbroken and use cydia, wouldn't be easier to get it on their apps vs apple?


Either way, subbed.
Old 01-18-2012, 12:09 PM
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Yep, unfortunately going through cydia you are losing a lot of public exposure from those who do not have jailbroken devices. Plus, once you have been targeted as developing unlicensed applications, good luck trying to license a product to sell through the apple store in the future.
Old 01-18-2012, 12:40 PM
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^ That sucks.
Old 01-31-2012, 05:51 PM
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For those of you that wanted an iPhone/iPod app, check first post for the link

@Leejin nothing else (if I understand your question). Apart from doing a compression test on your engine that is.

Cheers
Old 01-31-2012, 06:20 PM
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Thank You Sir!
Old 02-01-2012, 09:30 AM
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Originally Posted by virusakos
For those of you that wanted an iPhone/iPod app, check first post for the link

@Leejin nothing else (if I understand your question). Apart from doing a compression test on your engine that is.

Cheers
OOhhh... I understand now. It's a number converter. Gotcha. I thought it was adjusting the compression somehow on the engine itself. Haha... I need to read things better. X)
Old 02-20-2012, 07:46 PM
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Thank you so much for creating this tool!!
Old 03-08-2012, 09:26 AM
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Using PSI as the input values does not seem to be working for me on my Nexus running ICS
Old 03-08-2012, 02:41 PM
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so... according to this calculator... my readings are out of spec. Not sure if I'm doing this right, so maybe someone can chime in for me. My readings were:

#1 @ 318 RPM
7.8, 7.2, 7.5

#2 @ 318 RPM
7.6, 7.5, 7.6
Old 03-09-2012, 09:14 AM
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Originally Posted by wcs
Using PSI as the input values does not seem to be working for me on my Nexus running ICS
Sorry about that.
I will check it out.

Could you please send me a PM with the values you have tried?
Old 03-09-2012, 09:29 AM
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Originally Posted by Renesis555
so... according to this calculator... my readings are out of spec. Not sure if I'm doing this right, so maybe someone can chime in for me. My readings were:

#1 @ 318 RPM
7.8, 7.2, 7.5

#2 @ 318 RPM
7.6, 7.5, 7.6
Looks like all chambers in both rotors are below Mazda's minimum compression value.
If you don't have a warranty and your engine starts fine without issues, then no need for an action.
Enjoy your car
Old 03-09-2012, 01:26 PM
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The bug with PSI adjustment has been fixed.

Many thanks to wcs for reporting the error.
Old 04-08-2012, 03:46 PM
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I can't seem to find a way to delete the saved results.
Am I missing it?
Old 04-09-2012, 02:16 AM
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Originally Posted by wcs
I can't seem to find a way to delete the saved results.
Am I missing it?
No you are not missing it.
There is no functionality right now for deleting saved results in Android application.
It will be available in v1.3 (hopefully by the end of the next week).
Old 04-09-2012, 06:40 AM
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Originally Posted by virusakos
No you are not missing it.
There is no functionality right now for deleting saved results in Android application.
It will be available in v1.3 (hopefully by the end of the next week).
Sweet!
Thanks for the fast reply.

edit---
Looking forward to the update as I'll be show casing your app at our meet.
I've got 10 rx8's to do compression tests on

https://www.rx8club.com/canada-forum-35/rx8-spring-meet-new-date-april-29th-2012-a-231580/page3/


edit edit ----
Any thoughts of adding altitude compensation? Or using the Nexus built-in barometric pressure sensor?

Last edited by wcs; 04-09-2012 at 06:48 AM.
Old 04-14-2012, 05:26 AM
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v1.3 with delete functionality is available on Google Play.

@wcs never thought about altitude compensation, but does it really matter? Does Mazda take into account altitude when evaluating a compression?
Old 04-14-2012, 07:41 AM
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Originally Posted by virusakos
v1.3 with delete functionality is available on Google Play.

@wcs never thought about altitude compensation, but does it really matter? Does Mazda take into account altitude when evaluating a compression?
Sweet!

Ok ..... ummm does altitude matter
Well yes IMO and so does temperature, you could even say instead of altitude to use barometric pressure.

Does Mazda compensate for these things?
I'm sorry I don't know.

Here is the altitude compensation chart that I discovered doing research on other sites and from online "Engine Tech" books



I live at 1579 feet so I am interested in compensating for thinner atmosphere.

I'm also interested in how you actually calculate the "Normalized" compression value. Example when you have X psi value at Y rpm and you normalize it to 250 rpm.
It's obviously not a direct linear value as my numbers never seem the same as yours.


Great work man, love the app

Cheers


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