H&S MiniMaxx 6.4.24 update - 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 05-01-2011, 03:08 PM Thread Starter
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H&S MiniMaxx 6.4.24 update

Hey guys I updated my Mini to the 6.4.24 since it said it was made to address surging issues. I still have surging. Finding that if I get on to it fairly hard then back off to a consistent speed around 120kms/hr I can feel it surging pretty hard. I currently have it going into TC lock in 4th and 5th. Should I maybe be changing it to the 5th lock only to help combat this a bit. Thanks for the help.

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post #2 of 18 Old 05-01-2011, 03:58 PM
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I think the surging issues are just on the schedule 1. I changed to the shedule 2 medium and it works great. 5th locks up about 55 to 57. Give it a try.

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post #3 of 18 Old 05-01-2011, 04:15 PM
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i have the exact same problem! when the tc locks up in 4th it surges and feels like the transmission is slipping a little.

2003 F-250 6.0 ECLB- [B]
-EGR Delete-Oil cooler-6.4 Banjo Bolts-WW2-turbo feed and drain lines-upgraded alternator-upgraded FICM

Previous trucks: 1997 F-350 CCLB, 2000 F-350 CCLB, 2008 F-250 CCLB
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post #4 of 18 Old 05-01-2011, 05:24 PM
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I noticed the surging too. I got it to reproduce with 40-45 mph in 4th tc locked and light on the go pedal. I'm running the Sch.1-Low trans tune.

it's not terrible, but definitely noticable.

'08 F350 job 2 CC long bed SRW
H&S Mini Maxx, 4" DP, 5" w/muffler, S&B intake
full deletes
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post #5 of 18 Old 05-01-2011, 07:09 PM
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i noticed it today when i had cruise control on around 70-75 mph and i tapped the brakes to turn off the cruise control and felt a huge jump for a second....definitely very noticeable. I have the schedule 1 but other than the little surging there everything else is awesome. Good job H&S on the new shifting

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post #6 of 18 Old 05-02-2011, 04:30 AM
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yep mine gives that jump coming out of cruise too. otherwise this tune is great
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post #7 of 18 Old 05-02-2011, 10:07 AM
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today after a partial relearn run and 20 miles of driving, I noticed that the surging is less pronounced. I bet with a little more time and miles, it will go away.

'08 F350 job 2 CC long bed SRW
H&S Mini Maxx, 4" DP, 5" w/muffler, S&B intake
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post #8 of 18 Old 05-02-2011, 03:03 PM Thread Starter
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Switched to Schedule 2 Low and am happy with it so far. Few relearn runs and a few days of driving will tell me if I like it. Thanks for thew input guys

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post #9 of 18 Old 05-03-2011, 06:41 AM
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from what i am seeing on the diff. thread's about the new trans tuning im looking at schedule 2 low trans seems to be the way to go, 42 mph lockup in 5th gear sounds like a good fuel saver and daily driver, has anyone noticed if the 300 tune feels slower than the older 250 tune?


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post #10 of 18 Old 05-03-2011, 08:48 AM
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I have the schedule 2 low loaded on mine and it feels stronger than the old hot damn to me

2010 F-250 Lariat Fx4
H&S mini maxx
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