dieselbeef
dick doggin
- Joined
- Jul 23, 2007
- Messages
- 9,998
yeah well my truk ran a 16.0 at 82 mph and only made 275/675 on the dyno so iive got other issues nobody can solve
Here is the answer I got on another forum
Well if its that easy, dang it, I think BD has made a lot of money on there Rad boxes.
Lavon
well darn it, I'm about to find out myself, just pulled it in the shop
Lavon
Im thinking the same thing, Im going to try to put a 5V resistor in line and see what happens
Lavon
Let me know what you found out. I got stupid and bored and messed with a set screw on the throttle linkage so mine is running like crap at the moment.
Just to let everyone know what we learned this weekend. The RAD has a programmable chip in it that communicates with the ecm. It is not duplicatable without actually copying BD's program which is illegal.
We wired everything in place with the exact same voltage input and output in the TQ management wire(white with black tracer) and also the same amount of resistance in the Speed sensor wire(White with orange tracer). We drove my truck with the BD RAD on and measured all the differences of voltage, resistance, and ohms between driving with it of and with it on.
Hope this clears up any questions about TQ management.
So basically you broke the law and got it to work? :hehe:
Care to share voltages, and resistance numbers?
We actually didn't get it to work without a RAD. We had all the quality's exactly the same and it DOES NOT WORK without the programmable chip.
On the speed sensor wire (white with orange tracer on white clip) the voltage is 3.09V with the RAD on and the resistance through the BD RAD at 0mph was 150ohms and was close to 2000ohms at 55mph(the value changed faster then what the meter would comprehend)
We could actually figure it out legally, but the design would have to be 30% different then BD's. We could build one for about $50 actual cost but it would take a lot of time to write a code for the ECM and by the time you figure in the cost of everything to make a profit, it wouldn't be much less then what BD want for there's ($225).
Lavon