Explain these piggybacks - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


ECUs and Tuning Discuss Engine Management, Tuning, & Programming

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 04-17-2009, 11:11 AM   #1
Newb
Thread Starter
 
Join Date: Apr 2009
Posts: 8
Total Cats: 0
Default Explain these piggybacks

It has been 8 years since I did a turbo. Back then piggybacks weren't much more than shorting the coolant temp and running rich all the time. Stand alone or if you were lucky the right over-sized injectors were really the only solution.

The way I understand the PC Pro and the Powercard Pro is that when boost is present the ECU gets tripped into open loop and the piggyback's map is used.

Now does this mean that its the same map at 1 psi as 6psi ?

Does it mean running 12:1 open loop cruising down the interstate at 75 mph ?

Would one of these be suitable for a DD ? In that I mean the true benefit of FI is that your gas milage and reliability are good as stock until you gas it. Sure under boost you lose reliability and gas milage, but a well implemented FI is a good as stock just cruising around. FI is an amazing tool done right, the only reason more OEM cars aren't boosted is stupid NOx requirements.
regal is offline   Reply With Quote
Old 04-17-2009, 11:17 AM   #2
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,792
Default

don't worry about piggybacks (especially the PC) and worry more about building a Megasquirt.
Braineack is offline   Reply With Quote
Old 04-17-2009, 11:25 AM   #3
Newb
Thread Starter
 
Join Date: Apr 2009
Posts: 8
Total Cats: 0
Default

Yea I had the first proto Megasquirt years ago, it was real rudimentary back then.

I'm looking at a 94-95 Miata so I can go stand-alone if needed. But I wanted to start with a basic 150 RWHP setup for daily cruising. Its hard to justify the investment (time not money) in a MegaSquirt at lower boost levels. The black boxes are too simple for me to dismiss right off.
regal is offline   Reply With Quote
Old 04-17-2009, 12:23 PM   #4
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,328
Total Cats: 1,926
Default

I'm not even sure that you can buy a PCPro separately from a Moss / FFS supercharger system. They (the two vendors) are quite proprietary about the programming of them. I recently worked on a car owned by a local guy here who has an FFS supercharger and three PCPro devices, and the programming interface is a little header connector on the back that requires a programmer which they will only loan you when they're released an official update. So far as I am aware, the end-user is not allowed to tune them beyond the couple of buttons on the front panel.
Joe Perez is offline   Reply With Quote
Old 04-17-2009, 01:29 PM   #5
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,372
Total Cats: 1,333
Default

Quote:
Originally Posted by Joe Perez View Post
So far as I am aware, the end-user is not allowed to tune them beyond the couple of buttons on the front panel.
If they are realistic about one thing, it's the technical abilities of their customers.
Savington is offline   Reply With Quote
Old 04-17-2009, 01:35 PM   #6
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,792
Default

Quote:
Originally Posted by Savington View Post
If they are realistic about one thing, it's the technical abilities of their customers.

zing!
Braineack is offline   Reply With Quote
Old 04-17-2009, 01:35 PM   #7
Newb
Thread Starter
 
Join Date: Apr 2009
Posts: 8
Total Cats: 0
Default

Quote:
Originally Posted by Joe Perez View Post
I'm not even sure that you can buy a PCPro separately from a Moss / FFS supercharger system. .
I assumed that the fundamental operating process of the PCPro on the FFSC would be the same jist as the black box from Flying Mita.

I mean how else could you piggy back the Miata ECU except use boost to trigger open loop and change the map?


Also are you saying that the Megasquirt can be set up for the Miata for $400 'cause thats the price for FM's blackbox w/ their kits.
regal is offline   Reply With Quote
Old 04-17-2009, 01:53 PM   #8
meatbag
iTrader: (50)
 
gospeed81's Avatar
 
Join Date: Nov 2008
Location: Houston, TX
Posts: 7,357
Total Cats: 26
Default

you can have one built to your specs for that much:

https://www.miataturbo.net/forum/t14598/

or build one yourself for half as much:

https://www.miataturbo.net/forum/t13676/



IMHO, this is the ONLY way to go, regardless of horsepower goals. I'm in the sub 200whp turbo club, and still thoroughly enjoy having a fully adjustable standalone MS.
gospeed81 is offline   Reply With Quote
Old 04-17-2009, 02:00 PM   #9
Newb
Thread Starter
 
Join Date: Apr 2009
Posts: 8
Total Cats: 0
Default

OK, MegaSquirt it is.

Thanks
regal is offline   Reply With Quote
Old 04-17-2009, 02:54 PM   #10
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,792
Default

tried to tell you :P
Braineack is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
ME221 Now has Autotune and Long Term Fuel Trim Tables Motorsport-Electronics ECUs and Tuning 0 09-05-2015 09:02 AM
E-Manage Base Maps faviles5566 ECUs and Tuning 0 09-04-2015 12:50 PM
E-Manage Base Maps faviles5566 ECUs and Tuning 0 09-04-2015 12:50 PM
White 90 NA being boosted white90na DIY Turbo Discussion 15 11-10-2006 11:12 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 01:26 AM.