Compression Ignition Addict
Join Date: Aug 2011
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Just want to share what happens with trans and big RWHP
I have been seeing weird stuff happening with the transmission and the high level of power I'm making. When I want to get on it hard say for 35-40 mph, and spin the tires something weird happens. The truck decides to shift in between gears like into neutral. I thought maybe the transmission's clutches where going but they are not.
So here is what I have learned and sharing to help others. I talked to Jesse and Andy Warren who built the transmission I have and they told me that 6.0 does the problem I'm having due to the ECM. They told me that when the truck spins the tires the ECM sees that the wheel speed is not matching the transmission speed and through the adaptive learning makes the trans just stop working and puts it in neutral. Andy told me that Matt from gearheads turns the adaptive learning off to stop this from happening. Jesse sees it in the pulling truck when the tires are spinning hard and transmission is shifting into other gears.
For built trannies it is also wise to put a tune in and drive it easy until the trans learns before hitting on it. Sometimes the tranny might pound the gears extremely hard and bust something if you don't let it learn the tune. Hope the info helps out, ever since this truck has stepped into the big power there has been some things that need adjusted for it.
2004 F250 Ext.cab fabtech 5.5" lift,and traction bars 35" on 18".2005-2007 grill and LED headlights,58v FICM, Warren dual HPOP system, fuel reg. return system, areo 1000a fuel pump, dual fuel filters, ARP studded heads, CCV reroute, EGR delete, 225/75 Warren injectors, water/meth injection (cooling mist),SCT tuner with customs, banks intercooler. MTW stage 4 turbo, built trans by Andy Warren, 4:10 Detroit lockers.