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Interested to know how you plan on getting the HTG and Haltech communicating via CAN in the main harness. I'm assuming its not plug and play between the two for them to communicate properly. Amazing build you have here, I made an account just to comment!
HTG ECU have two CAN buses, each one can be configured separately. One will have Haltech properties and will "talk" with it easily. 2nd CAN will be used for communication with BMW shifter.
For all of you patiently waiting for the DKG conversion to be finished, still didn't. A couple months ago, been on the track and at first pass had violent nitrous explosion in the intake, part of the intake piping with 50 mm blow off vent and air born through front bumper. The engine was working fine but there was a significant oil leak between heads.
Later, went to the garage, removed plenum, cleaned oil residue, and found hair like crack at the block, just where one of the oil passages is. So, engine out, disassemble, at first look everything seemed OK minus that cracked block and significant wear on the bearings (not critical but they couldn't take it much longer for sure) But..
Piston wrist pins were bent, could remove it from pistons and rods only by force, hammered. Rods bearing were pressed and pushed out too. Then found a crack on the oil pump and that was it. Decided to trash everything except heads and do it from the beginning with keeping in mind what I've learned. Not that I'm very sad, this build lasted 5 racing seasons without issues up to this.
So, I've ordered Wiseco custom pistons from CZP, this was painfully slow process, apparently they had a bad batch at first attempt, then waiting another month for 2nd batch, then almost three months to be shipped from USA to Croatia because of this COVID mess and finally I get parts couple days ago.
HTG ECU have two CAN buses, each one can be configured separately. One will have Haltech properties and will "talk" with it easily. 2nd CAN will be used for communication with BMW shifter.
Right but as far as I'm aware, the Haltech's CAN communications are pretty locked down. It's broadcast protocols are widely available, but the only devices that can transmit to the ECU are Haltech devices. Unless you plan on CAN sniffing one of Haltech's IO Expander boxes to break down Haltech's transmit protocol and programming the HTG to mimic it, I'm not really sure of a way its possible for the HTG to transmit to the Haltech. Interested to see how you accomplish it though!
Right but as far as I'm aware, the Haltech's CAN communications are pretty locked down. It's broadcast protocols are widely available, but the only devices that can transmit to the ECU are Haltech devices. Unless you plan on CAN sniffing one of Haltech's IO Expander boxes to break down Haltech's transmit protocol and programming the HTG to mimic it, I'm not really sure of a way its possible for the HTG to transmit to the Haltech. Interested to see how you accomplish it though!
GCU will read everything needed from Haltech through CAN. Haltech doesn't need much from GCU, an analog input should suffice for torque reduction on shift.
There is one guy with Supra, Elite 2500, DKG and GCU.. driving last couple of months already.
If you ship to the states, and may be some instructions, directions, or pitfalls to avoid on how you integrated it with the Elite 2500, I'd be a interested customer.