Run a MS2 parallel on an NB1 or use AEM FI6?

[fwman1]

Anyone running a MS2 parallel for a NB1? Call me a wus, but I would rather start parallel and just have the MS2 handle fuel and timing.

I've also been considering an FI6 from AEM.
The FI6 seems like the easiest path, but not many folks have chosen this route.

Community and company support for Miatas is not nearly what the MS offers. Still, if it works as advertised, the FI6 actually does exactly what I want to do in the simplest package.

[engled]

I didn't see and FI6 listed for a miata in the web site so I guess that means your kinda on your own for base maps and such.

A lot of people do the piggy back method, look on turbomiata.net and you should be able to find what you need. I think what you end up with is the MS doing everything but the idle.

That having been said the DIYPNP is not that bad to do. Several of our members have built them and have them running today. When I looked at the two options the piggyback looked like a lot more work to mean and I'm pretty lazy. Very little wiring changes, change out the intake air sensor and remove the air flow meter and your done. Idle is going to be the only hard part and it can be made easier with a pretty simple hardware change in the DIYPNP.

[fwman1]

Thanks Darryl. I've been trolling MT really hard the last several weeks. There is definitely more support available for the MS2! I think I even read that they were coming out with a PNP for 99-05.

On the MS2...I was a jeweler for 20 years so working with tiny stuff is no biggie. I have been flying RC planes for 30+ years and built my own computer transmitter from a kit back in the day before they were commonplace. After spending hours on the DIY site, I believe the work they require is within my skill set. I still do a decent amount of soldering in the RC hobby today as the planes I fly are pretty big and the stock stuff often needs to be modified. It is the learning curve on the tuning and the fact that my car is my DD that slows me down. I am in love with my A/C and my generally well mannered car, and the while MS2 appears that it can be made to play nice that is a non-negotiable point to me. If I had a second car to drive to work (80 miles round trip at 4:00 am!) it might appeal to me more.

While the AEM FI6 for the 99-00 Miata is not directly supported through AEM I have found enough bits and pieces that I see it as a viable alternative. AEM has a patch harness available, and if you want to pay the extra bucks, Boomslang can do all the wiring for you. I have the necessary pinouts in hand already. It would take part of an afternoon to get it ready to go. A about 16 various taps and intercepts you can do at the shop table. There are a few folks running them on supercharged Miatas with good success. Mostly they are in the northeastern part of the country. The thing about the FI6 is the calibration files are always set to zero when you start tuning. Basically, as a piggyback, the unit will be transparent to your ECM till you start tuning. You can set a switch to flip from one map to the other, so keeping a zeros map makes it dead simple to back out a tune. On the FI6, the learning curve is not going to be that steep, and I can keep my Powercard (fueling) and M45 active during the learning process with little risk to either system. The running on the rest of the car is still handled by the ECM. It only pulls timing, and does not advance it. Once I get the timing down, then I'd tackle the fueling. After that was done, the smaller nose pulley and a/w or w/i goes on.

More info than you ever wanted to hear, I'm sure. It helps to talk/type it out sometimes. The folks running the MS2 in our club, are they running them on a DD with A/C? If so, I'd like to pick their brains a bit more on the MS2. Again, thanks for taking the time to reply!

[fwman1]

Hey, I didn't lose it after all! Yea.. I thought I'd lost the post above and was really bummed.

[zukitek]

I DD my 240 and did it without 1 day down . What you do is do a DIYPNP or the MSPNP and keep it where you can just jump back and forth between the stock ecu and the MS untill you get everything with the MS where you like it . My car still has working AC and cruise . It really is a pretty simple process and the support is pretty great for the MS.