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.

don't worry about piggybacks (especially the PC) and worry more about building a Megasquirt.

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.

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.

If they are realistic about one thing, it's the technical abilities of their customers.

zing!

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.

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.

OK, MegaSquirt it is.

Thanks

tried to tell you :P