Pat's Ebay Turbo Compound Boost Build
#690
Elite Member
Thread Starter
iTrader: (16)
Join Date: Aug 2007
Location: Houston, TX
Posts: 9,339
Total Cats: 519
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
To reduce shock loading on the entire drivetrain during shifting, I need to reduce engine power to almost nothing during gear changes. Like this. There is no visible RPM bounce after the clutch is out on this shift. And I run zero smoothing on my RPM trace (and almost every sensor really since that can mask problems).
![](https://www.miataturbo.net/attachments/build-threads-57/164863-pats-ebay-turbo-compound-boost-build-drivetrain%2520shock2_zpsqzpkjral.png?dateline=1457456647)
#695
Elite Member
Thread Starter
iTrader: (16)
Join Date: Aug 2007
Location: Houston, TX
Posts: 9,339
Total Cats: 519
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Just driving and enjoying it. Since it is a street car, I want it to pass emissions all the time, so I'm working on making it do that with the turbo setup. Actually making very good progress but it's not finished.
I'll post a more substantial update once I've accomplished this emissions goal.
I'll post a more substantial update once I've accomplished this emissions goal.
#697
Elite Member
Thread Starter
iTrader: (16)
Join Date: Aug 2007
Location: Houston, TX
Posts: 9,339
Total Cats: 519
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Also, the list of cars that pass emissions/OBDII codes all the time on there turbo miata is an extremely, extremely small list, and all of those setups are not able to make high power due to the limitations of their engine management. I'm going to fix this.
#698
SadFab CEO
![](/mt2011/images_td/ranks/supporter1.gif)
iTrader: (3)
Join Date: Sep 2012
Location: your mom's house phoenix, AZ
Posts: 4,560
Total Cats: 1,142
#699
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
No ****. Put it this way then. If that flywheel is one particle heavier than it needs to be for trans health then the POTENTIAL shock load to the drive train will be greater with less than PERFECT rev matched shifts. And longer delay between shifts. The flywheel may be too light now for all I know. I ask. Ya'll maths it.
Last edited by fivehundredton; 04-09-2016 at 08:21 AM. Reason: sp