Can't go wrong with treadstone stuffs!

Can MS do closed loop? If not then meh.



Awesome build by the way. Subscribing. I'd like to do Motec in my RX8 one day, the traction control is awesome and GPS based control would be cool to play with. Maybe active aero.

I have not seen an application so far where the gearbox wouldn't work properly with the MS3, like I said, with gearboxes from Samsonas, Sadev and Quaife.

Kind of dodged the question there eh?

I'll assume that it's a basic ignition/fuel cut on a time delay. Also I don't think you can input a raw strain guage 0-5v signal either if I was reading that correctly in the Quaife thread. One other thing that Motec can do is a power reduction for shifts instead of an abrupt cut as well.

This website actually explains it pretty well with data logs and everything.

Geartronics - Sequential gearbox electronic systems - Closed loop system

Let's all just relax. The question about motec has been answered, there is no need for hostility on either side, or to derail his thread.

Noted.

Are you gonna run a custom intake manifold? I noticed you bought intake flanges. If so, I don't know much about what makes a "well designed" intake manifold considered well designed. What's the primary benefit compared to a over the shelf manifold? Either-way, i'm looking forward to the fabrication of it.

​​​​​​I think the over the shelf manifolds outcase poor design philosophies that make everything else around it hard to service. Also, I don't plan to use a Miata TB. Fabrication will need to take place at some stage.

My plan IF I ever get my car settled and if I don't sell it would be C6 or Volvo V70 pedal with a audi (Bosch 0280 750 009) throttle body pared w/ skunk 2 manifold. Unneeded and unnecessary but seems fun to add.

Thank you so much for the feedback sir!

Don't use the VW thottle body, which is pretty bad and breaks down.

Do get the RX-8 throttle body, which is large-ish (70mm) and has contactless position sensors (Hall) inside for increased reliability.

for a big power build and DBW, get something like a VDO throttle body from a chysler/dodge hemi. they are 80mm but with dbw that really doesn't matter. you can program throttle opening over rpm so it really doesn't matter how big it is if the PID's are good. 2500rpm you will only need like 20% throttle opening (set that to 90% pedal) and linear down to 0 from there... perfectly drivable car with zero chance of intake losses and advanced filling of the plenum when you are fully open.

Are you shooting for an equal length twin scroll manifold? How are you measuring runner lengths?

I don't know about the Chrysler TBs, however many of the VW/Audi TBs are also VDO and crappy. So beware.

That's what I purchased to use on an old project. they don't seem to have any issues from what I could read.

point of the post was more along the lines of - - get the largest throttle body, there are almost no negative impacts from a larger TB when you go dbw being that you can tune it to how you like to drive and tune throttle plate over rpm against throttle pedal position so its still drivable - -

I narrowed down into two options in terms of the DBW setup because I already have the calibration files, GM style or a CRV unit. The GM style is pretty fast between 10-90% and their response time is somewhere around 20ms. I will do more digging when I am the stage to make the call.

Fine idle control is almost impossible on large throttle bodies on small engines.

even more reason to use a powerful ecu.

closed loop throttle control for idle and fine ignition control tables specifically really make this a non-issue.