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2011-2014 Mustangs
2011-2014 Mustang Talk
Duel Relay Trans brake with a stock Converter: Before and After
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<blockquote data-quote="clinton2003" data-source="post: 14311245" data-attributes="member: 144769"><p>So yesterday Mike got a new PB and we figured the trans brake is good for at least .1 E/T </p><p></p><p>Yes the 3 Relay raises the line pressure, and with the 3 relay one you have to adjust the tune. Only problem is with a 13-14 tune file there is a hard coded 3000rpm error code. so it will go into limp mode if your sitting at 3k+ without wheel speed. </p><p></p><p>The 2 relay is basically as safe as you can get... worst thing your going to do is hurt your internal trans clutches since what it does is engage 1,2,3 gear all at the same time. and since they share clutches they can slip from the power of the engine. </p><p></p><p>Anyway the diagram is about as much of a writeup you need... but the basics are,</p><p></p><p>take off top plug of ECU, cut tape and pull back wiring. as diagram says find wire going from pin 44 and 45 (believe they were grey and green, with stripe, but can change from year to year) if you look closely at one side of connector you can see the little numbers on either side. they dont label each one just outer most ones. </p><p>Cut wire, on plug side of both wires put 1 wire, on trans side (side going into main harness) you need to put 2 wires to each one. (label each one for ease, thats what the blue tape is) so you will have a total of 6 wires coming from the place you cut the wires. put wire harness back together and hook connector back to ECU. </p><p></p><p>We ran a new wire from the battery to the switch he has mounted in the vehicle. with a 5amp fuse close to the battery. then it goes to the momentary switch and then to where the relays are. and finally a ground that is right next to where the relays are mounted. once you have all the wires its a matter of putting them into the correct spot. </p><p></p><p>Took a while to make clean (with exception of the red wires, used what we had... ) but all in all turned out great and works well. if you have a line lock you can incorporate that into the switch as well, and have a toggle to disable Trans brake during burnout. All in all it works great and if effective.. especially for a sub $30 mod</p></blockquote><p></p>
[QUOTE="clinton2003, post: 14311245, member: 144769"] So yesterday Mike got a new PB and we figured the trans brake is good for at least .1 E/T Yes the 3 Relay raises the line pressure, and with the 3 relay one you have to adjust the tune. Only problem is with a 13-14 tune file there is a hard coded 3000rpm error code. so it will go into limp mode if your sitting at 3k+ without wheel speed. The 2 relay is basically as safe as you can get... worst thing your going to do is hurt your internal trans clutches since what it does is engage 1,2,3 gear all at the same time. and since they share clutches they can slip from the power of the engine. Anyway the diagram is about as much of a writeup you need... but the basics are, take off top plug of ECU, cut tape and pull back wiring. as diagram says find wire going from pin 44 and 45 (believe they were grey and green, with stripe, but can change from year to year) if you look closely at one side of connector you can see the little numbers on either side. they dont label each one just outer most ones. Cut wire, on plug side of both wires put 1 wire, on trans side (side going into main harness) you need to put 2 wires to each one. (label each one for ease, thats what the blue tape is) so you will have a total of 6 wires coming from the place you cut the wires. put wire harness back together and hook connector back to ECU. We ran a new wire from the battery to the switch he has mounted in the vehicle. with a 5amp fuse close to the battery. then it goes to the momentary switch and then to where the relays are. and finally a ground that is right next to where the relays are mounted. once you have all the wires its a matter of putting them into the correct spot. Took a while to make clean (with exception of the red wires, used what we had... ) but all in all turned out great and works well. if you have a line lock you can incorporate that into the switch as well, and have a toggle to disable Trans brake during burnout. All in all it works great and if effective.. especially for a sub $30 mod [/QUOTE]
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2011-2014 Mustang Talk
Duel Relay Trans brake with a stock Converter: Before and After
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