03-04-2006, 05:51 AM
Join Date: Nov 2005
Location: Down Under
Total Cats: 0
I hope that you don't mind me giving few answers to kags1969 original questions.
1.) What is the shopping list for a piggy-back install?
I bought a MS1 v3.0 from diyautotune along with the GM temp sensor for the AIT. I also needed/wanted a heap of electronics gear that I purchased from Jaycar to be able to do the job.
1a.) Do I really need the relay board ? do you have it?
I didn't get one and my car is running just fine.
2.) Are you using the miata coils and crank angle sensor? Any issues?
Yep, I've spliced the MS into the OEM wiring and it's running from the CAS and using the OEM ignitor and coils.
3.) Did you have to buy any sensors to get it to work with MS?
No, I didn't have to get the GM sensors and my car ran fine for fuel only on the old 1.6. The GM sensors do make things easier though and when I do my cooling re-route I will be using a GM sensor for cooling temp as well.
4.) Looking back what would you do different?
Probably heaps of things. My reasons for getting the MS were to properly tune my 1.8 engine which is going to have a 260 duration Mazdaspeed intake cam. I started with a fuel-only set up on the old 1.6 so I could learn to tune the thing without having to worry about the engine if I totally stuffed things up. Then I took it all off while the 1.8 went in, drove around with the 1.6 ECU running the 1.8 (and causing me a bit of grief in the process) and then I finally modded the MS to be able to run the PWM idle control as well as the ignition and since then everything has been sweet.
I really wish that I'd just left it on the car while the engine swap was done and had the thing running the 1.8 from the start. It really was that easy to get running with the MS that I shouldn't have waited.
I hope that helps with your install decisions. If anyone has any more questions than I'd be more than happy to try and help out.