Mini Maxx Chirping issue - Diesel Forum -
6.7L Upgrades and Aftermarket - Engine Upgrading or adding OEM or aftermarket equipment to your 2011-Up Super Duty truck with 6.7L Power Stroke diesel engine. Please confine discussion of topics in this forum to those items that are specific to the 6.7L Power Stroke engine.

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post #1 of 4 (permalink) Old 11-29-2017, 04:40 PM Thread Starter
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Mini Maxx Chirping issue

I just did a full EGR delete and installed a new 4" straight pipe and the H&S Mini Maxx Tuner. The truck runs great but the tuner is emitting a quick double chirp with a small pause in between each double chirp. It's driving me crazy. I did not install a pyro sensor, yet anyways, so checked to make sure the Pyro sensors were set to "Off" in the defuel options. I can't seem to find what is causing the issue. Can anyone give me any ideas on this?

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post #2 of 4 (permalink) Old 12-07-2017, 06:22 PM
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I just did mine today also, was damn cold out there doing it. Mine was chirping when i first cranked up also but stopped when i went through the power levels. I may have shut it down and rebooted also.

Also, my pyro is showing over 2500 degrees on pyro 1. I was NOT getting on it and there is also no pyro hooked up. I have to research this, is yours doing it?

2012 F450 4x4 Lariat CC
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post #3 of 4 (permalink) Old 12-08-2017, 08:51 AM Thread Starter
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Mine chirps on startup, but I think that's normal. When it hits the minimum temperature to kick in the "performance" setting it continuously chirps. I set the pyro sensors to 'off' since the pyro one sensor I was sent doesn't fit so I didn't install it. Make sure you have the pyro's set to off in your defuel settings and that may fix your problem. For me I think I may return the tuner and get a different one that has current tech support as I'm not having luck resolving my issues.
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post #4 of 4 (permalink) Old 12-13-2017, 02:00 PM
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FWIW,the MM I had in 2 previous 450s, would always chirp when I hit the defuel settings--are you sure one of them is not set wrong?

2017 F450 KR
2010 F450 Lariat 4x4--died, but reborn, traded
2009 F450 Lariat 4x4--died, scrapped
2007 F350 KR DRW CC 4x4-Gone to pasture
2015 Mobile Suites 38RSSA--hoping for another 10 years
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