Project 6.0L Sedan

[D_Eclipse9916]

So.... how is the ECU/wiring/etc handled? Does everything else work normally? I assume you start with an OBD-1 car? What about A/C?

It is basically a bolt on kit <!-- m --><a class="postlink" href="http://sambergperformance.com/product/bmw-e36-mounting-kit/">http://sambergperformance.com/product/b ... nting-kit/</a><!-- m --> No hammering of firewalls, cutting up sheetmetal, welding. Bolt-on.

The driveshaft will need to be sent out to be shortened, and I will have to extend some of the ABS lines to move it so I can get it out of the way heat out of the headers.

As for wiring. It is a hybrid of BMW/GM wiring in the car.

Very little BMW engine side harness is used. I mean we are talking a couple relays and the main power wire. The GM ECU drives the engine/trans, and since OBD2 is universal, you just move on wire in the OBD2 port, and you have fully functional OBD2 diagnostics. The E36 m3 luckily comes with fully independent ABS/brakes/steering in that it doesn't need to communicate with the BMW ECU (solving any issues with having ABS, another RX7 issue, most RX7 guys go non-abs).

The A/C actually works pretty easily with two wires, and will be having 2 custom A/c lines made to adapt the GM compressor to the BMW condensor/drier.

As for gauges, you are using the stock BMW tank/pump assembly/level senders, so gas gauge is good to go. Speed sensor is in the differential, which you are not replacing, so Speedo works. RPMs are literally just a tune on the stock GM ECU. Stock coolant level sender is used so no problem. Oil level/pressure uses adapters and threads into the LS1.

Cruise control remains the same, and is independent of the BMW ecu, so you just have to shorten the cruise line, and it works.

Shifter ends up being in roughly the correct place. Just slightly 1/2 inch back. So people just bend the shifter (along with going short shifter), and it works.

You do have to do a "custom" power steering line. (simply move the high pressure hose from a straight fitting to banjos).
All accessories are GM based, A/C, power steering, alternator, starter. So no problems.

One of the issues solved with the LS1 vs. LS2/3/6/7, is the throttle cable is an actual cable, not drive by wire. Making pedal swap not neccessary for the throttle pedal.

Clutch line is just a remote bleed clutch line that is common to many LS motors.