jawatkins95

Hello friends.

I bought an MSM with a Hydra. I have recently thrown that sh*t in the trash and installed a Haltech Elite 1000, complete with PNP harness, CAN gauge, and wideband.

I plugged the Haltech in and loaded the appropriate basemap; the car proceeded to start easier than ever. Problem is, now I have a lovely ECU and bundle of wires accompanying the space that my feet need to go in the driver's footwell.

Since my car didn't come with a stock ECU (or brackets), I can't just modify the stock brackets and install the new brain in the old brain spot. Before I go through the effort of engineering my own solution I wanted to ask the hivemind and see if there were any creative solutions that I haven't found yet. (I have seen the airbag delete/replacement, that's a neat solution)

​​​​​​So, where put brain?

thebeerbaron

iTrader: (1)

brainzata

iTrader: (4)

Detach the oem harness. It is long and is routed from the passenger side anyways. Guide it back through the small opening where it's routed behind the hvac/heater. The harness plug ends will easily reach the floor panel area and you can mount the ecu similar to how na 1.6's have it from the factory.

Socals14

How about the GWR unit:

https://www.good-win-racing.com/Mazd...hoCrzsQAvD_BwE

jawatkins95

I got it figured out. I halfway took your advice an ran the ECU harness through the dash between the radio and the hvac/heater. I started to fish it out from its original hidey-hole like you suggested but it seemed to be way easier to just double it back across. Once you cut the harness loose from the assorted clips and electrical tapes in the pedalbox it has plenty of length to make it back across the car. This method puts the connectors right behind the glovebox, which is (conveniently) right where the Hydra was mounted. The Haltech fits nicely in the Hydra bracket, so I just zip tied it in place and tucked the bundle of connectors in the passenger knee-dash-panel thing to the right of the stereo.

This location also makes it pretty easy to use the generously-sized AC line holes and grommets in the firewall to run cables to the engine bay.

(insert pics here when I take some)

DNMakinson

iTrader: (3)

This is interesting. I had seen people Mount units behind the air bag, but assumed they used an extension to do it.

With all the extra wires I now have coming from my MS3-Basic, I doubt I’ll move it now. But great info.

Also, brainzata, you discuss behind the glove box, but show behind the air bag. Which did you mean?

Finally, did the 1.6 ECU reside on the floor beneath the seat, or on the wall behind the seat?

DNM

jawatkins95

I put mine behind the glovebox, brainzata put his in the airbag compartment. He had originally recommended re-routing the harness and putting it in the passenger floor in the 90-93 location.