EGR Cycling w/ Mini Maxx - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

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post #1 of 18 Old 03-16-2011, 04:09 PM Thread Starter
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Unhappy EGR Cycling w/ Mini Maxx

I read on the H&S forum that the Mini Maxx will complete one test cycle of the EGR system for the 2010-2011 trucks to keep it from sticking. This post was about 3 months old, and it said that the system for the 2007.5 thru 2009 trucks don't cycle the system at all (yet). Is this true or do all Mini Maxxes cycle it now? I have to smog the truck yearly and I don't want to have to worry about the valve sticking every time I go back to stock for the one day I smog the truck.

2008 Ford F-350
6.4L Power Stroke
Crew Cab Long Bed
Buck Stop Bumper w/
WARN 9500 lbs. Winch
H&S Mini Maxx w/ homemade mount
5" Flo-Pro DPB exhaust w/ muffler
Bilstein 5100s Shocks
AFe Stage II Magnum Force Intake
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post #2 of 18 Old 03-16-2011, 05:15 PM
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I thought the 6.4 cycles upon startup...which would explain some of the weird sounds upon startup.

I would prefer the valve to cycle at idle, but I'll accept just on startup.

-Steve
2011 F-350 Lariat 4x4 SuperCew: White Platinum Tri-Coat, Goodyear Wrangler Silent Armors, Window Tint
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post #3 of 18 Old 03-16-2011, 05:33 PM Thread Starter
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That's what I thought too, the post on H&S said it does cycle it once upon start up, but only for 2010 and 2011 trucks. They said they haven't figured out how to cycle the egr on the 2007.5 to 2009 truck yet... at least that's what the post said. Any input?

2008 Ford F-350
6.4L Power Stroke
Crew Cab Long Bed
Buck Stop Bumper w/
WARN 9500 lbs. Winch
H&S Mini Maxx w/ homemade mount
5" Flo-Pro DPB exhaust w/ muffler
Bilstein 5100s Shocks
AFe Stage II Magnum Force Intake
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post #4 of 18 Old 03-16-2011, 05:55 PM
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post #5 of 18 Old 03-16-2011, 05:59 PM Thread Starter
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Here's where I found the post:

HS Performance - tunes - H&S Performance

2008 Ford F-350
6.4L Power Stroke
Crew Cab Long Bed
Buck Stop Bumper w/
WARN 9500 lbs. Winch
H&S Mini Maxx w/ homemade mount
5" Flo-Pro DPB exhaust w/ muffler
Bilstein 5100s Shocks
AFe Stage II Magnum Force Intake
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post #6 of 18 Old 03-16-2011, 06:46 PM
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I called H&S and they said on the 6.4 it is shut off and will not cycle. That was about 4 months ago. I got a KEM custom that will cycle at idle. Well worth the 50.00

2008 FX4 SC SB 6 Speed 3:73LS, Transflow, H&S Mini Maxx, KEM Tunes, S&B Intake
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post #7 of 18 Old 03-17-2011, 08:05 PM
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I talked to H&S on the phone today, and the guy on the phone told me that he wasnt sure if it did, or it didnt. He said that he talked to another employee and he wasnt sure either. I asked how i can find out and he told me that i should get under my truck and listen for it to cycle. Maybe I will try to call back on a different day hoping that i can get better results.

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post #8 of 18 Old 03-17-2011, 08:08 PM
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You can hear a different sound from the exhaust when it cycles. If it cycles only on start up, you may need someone to start the truck so you can hear it.

2008 FX4 SC SB 6 Speed 3:73LS, Transflow, H&S Mini Maxx, KEM Tunes, S&B Intake
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post #9 of 18 Old 03-18-2011, 05:05 AM
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I was pretty sure it cycled on startup. However I have been hearing otherwise. Anyone contacted anyone at Rudy's to see thier opinion? I'll shoot them a call or email.

2008 Ford F-350 CC/LB 4X4

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post #10 of 18 Old 03-18-2011, 05:58 AM
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I can't find it, but I emailed Casey at H&S last year and if I remember correctly he said the XRT, Mini, and Black maxx all cycled the EGR on start up. I asked about the XRT specifically.

If I find the email I will let you know.

2008 F250 Crew Cab 6.4 2wd Mini Maxx, Diamond Eye DPF/DOC delete, S&B CAI
2009 Harley-Davidson FLTR
2011 Edge ( yeah I got kids)
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