MSP installed and running!
#1
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1) Emilio told me that any vacuum 3 inches away from the throttle body was good. So I went with my cruise control plug on the back half of the manifold.
2) Hooked it all up, synced the timing, and fired it up. It was making a howling sound from the intake for the first couple minutes which eventually went away. I'm running the base tune that came with the unit.
3) It seems to have a idle issue. When the idle has settled, it holds around 650rpms, which seems low. When the revs come down it stumbles to like 500rpms and sometimes shuts down. I read about the idle situation and understand adjustments to AFR and timing may be needed. What do you guys think of the following?
![](https://www.miataturbo.net/attachments/megasquirt-18/136452-msp-installed-running-img_0170_2.jpg?dateline=1427250991)
AFR
![](https://www.miataturbo.net/attachments/megasquirt-18/136453-msp-installed-running-img_0168_2.jpg?dateline=1427250991)
Fuel
ignition
#2
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Oh I almost forgot to mention how the MS holds the targeted AFR MUCH better than the stock ecu. When I would look a the wideband with the stock ecu, for example the idle would be constantly moving from 14-15.2. The MS stays within like .3 of the target. Very impressive ![big grin](https://www.miataturbo.net/images/smilies/biggrin.gif)
It does have some drivability issues and but I'm sure that will be worked out.
![big grin](https://www.miataturbo.net/images/smilies/biggrin.gif)
It does have some drivability issues and but I'm sure that will be worked out.
![big grin](https://www.miataturbo.net/images/smilies/biggrin.gif)
#6
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Afrs are super rich when on the throttle but it stumbles if Im too aggressive on the throttle and so I'm driving it around like a grandma at this point.
I got the test n tune this Sunday but looks like I'll be mounting the stock ecu next to the ms. Not that I was thinking I'll have it figured out but I waaas hoping I could use the autotune feature but I'm having issues with my wideband.
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