Thread: Megasquirt ECU in D2 V8

Mmmm sound like a much more complex conversion on the D2 than the RRC. LR4X4 site has a really good sub-forum on MS for Rover V8. They seem happy to advise on options etc

Originally Posted by Nick S

Not sure about how D2 integrates engine ecu with body but with my 4.6 in a 1990 RRC it was just a matter of getting rid of the cux14, MAF and the distributor and replacing it with coil packs, MAP, EDIS8 and a MSII Extra ecu. Result has been great, total contol over fuel and ignition. Can you just leave the existing ecu there powered up for the BCM and bypass the lot with MS?

If I do go ahead with the MS2+, it will only be utilised for fuelling & ignition. All of the functions of the Motronic intergrating with BCU, CCU, EAT etc will remain.
It is well known that the tuning of the Motronic is extremely conservative.

The D2 throws a lot of codes back when you plug in a piggy back. Seems even though the stuff's still plugged into the lines, it has issues with the sensors. Maybe voltage issues as it's plugged into two things. Wasn't going to unpin the senor inputs from the ECU plug to test the difference.

The CUX will just replace it completely wouldn't it?

Originally Posted by Collins

I can assure you, not a Haltec piggyback, rechip of early D2, flah programming of later. Vehicle required, approx cost $600. I spoke with them last week.
Give them a call,

Be assured, rechip od early TD5, reflash of late NNN TD5 ecu's.

The only V8 tuning they do is the Haltech. Spoke to my old service manager who's still there.

Only reprogramming option is Mark Adams.

Firstly, I must apologise to 'clubagreenie', he is correct, Coopers do not rechip & still add on a Haltech starting at $1300. Please disregard the link I posted.

However, made another call today & spoke with Bruce Davis @ Davis Performance Landys & he again confirmed that they do rechip D2 V8 Motronic ECU's.
After talking with him today I an seriously considering booking in to have the ECU rechipped.

Best of luck to you..

The only real gains come from mechanical upgrades...

Cam, Heads, Valves, Polishing, Porting, Capacity increase or forced induction...

V8 Rovers - 'you can't polish a turd, but you can roll it in glitter'

You want it to pull harder - go bigger (4.6)

Fitted a Bruce Davis chipped ECU to a V8 2003 D2a, customer noticed good gains for towing, it is an auto, and running 32" BFG mudders aswell.

I reckon with standard tyre size it'll be better again.

He is very happy with the $600 outlay.

He says his fuel bill seems the same, too.

JC