Max APP

Tuning discussion for all second generation Mazda 2.3 MZR DISI Turbo powered vehicles
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Steve @ VersaTune
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Max APP

Post by Steve @ VersaTune »

What is the max APP percentage you are seeing? I've seen a lot of Gen2's that don't go to 100% More like 75% ish. What is everyone else seeing?
EPTSpeed3
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Joined: February 20th, 2013, 8:30 pm

Re: Max APP

Post by EPTSpeed3 »

Max Ive seen is 75% as well. Been doing alot of adjustment of tune since I learned that it only goes to 75%.
mituc
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Re: Max APP

Post by mituc »

Is this a general issue? 75% sounds more like throttle position numbers, nu APP.
2008 Cosmic Blue Mazda 3MPS
Built engine + WMI + GTX3071 gen2, ~509BHP @34PSI
2008 Icy Blue Mazda CX7
Stock engine and exhaust (YES!!), JBR3" + GTX2867 gen2 + Autotech HPFP, self-tuned to 330-ish BHP
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Steve @ VersaTune
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Re: Max APP

Post by Steve @ VersaTune »

I shimmed mine and got it to 83% Previously it was hitting the floor and stopping at around 75% I verified that it is getting the max travel that is mechanically possible.

None of the Gen2 logs I've seen hit 100% APP

Interestingly, it fails the Mazda IDS health check on the APP test.
EPTSpeed3
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Joined: February 20th, 2013, 8:30 pm

Re: Max APP

Post by EPTSpeed3 »

Hmmm. Interesting.
EPTSpeed3
Posts: 17
Joined: February 20th, 2013, 8:30 pm

Re: Max APP

Post by EPTSpeed3 »

So i what happens if we mess with the APP Calibration? Set 70% APP to Request 100%?
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Steve @ VersaTune
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Re: Max APP

Post by Steve @ VersaTune »

or set the APP Req Load tables to request your max load by 75% ish.
torquemaniac
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Joined: April 6th, 2013, 2:26 pm

Re: Max APP

Post by torquemaniac »

On my gen2 CX-7, the logs shows that the minimum APP at idle is 31%, and the maximum APP at WOT is 76%!?!?

Does this mean that the lower and upper parts of my "APP requested load" table are worthless?
CX-7 beast : top mount Holset Hy35 / L2A intercooler / Aquamist HFS4 direct injection / modded transmission...etc
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Steve @ VersaTune
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Re: Max APP

Post by Steve @ VersaTune »

I'm still looking at how the real APP number is determined by the ECU. I'm surprised to see a min APP of 31% though.
torquemaniac
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Joined: April 6th, 2013, 2:26 pm

Re: Max APP

Post by torquemaniac »

I guess the best option should be to tune with the "requested load X gear", so the APP% wont matter

Here is a log that show the APP at idle and WOT (all my log show the same patern)
Attachments
High load v1.08 WOT log.zip
high load v1.08 WOT log
(51.4 KiB) Downloaded 586 times
CX-7 beast : top mount Holset Hy35 / L2A intercooler / Aquamist HFS4 direct injection / modded transmission...etc
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