MSPNP, Greddy and AFPR... - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to   Members

MEGAsquirt A place to collectively sort out this megasquirt gizmo

LinkBack Thread Tools
Old 11-28-2010, 07:12 PM   #1
Junior Member
Thread Starter
Join Date: Oct 2009
Posts: 89
Total Cats: 0
Default MSPNP, Greddy and AFPR...

I saw someone on another thread express surprise that I had an auxiliary fuel pressure regulator with the MSPNP. As far as I understand, the AFPR just makes sure there's enough pressure on the line and wouldn't affect how much fuel is squirted. Am I wrong?

Cheers, Jon
jonljacobi is offline   Reply With Quote
Old 11-28-2010, 07:35 PM   #2
Senior Member
iTrader: (2)
Join Date: Jun 2007
Location: Shalimar, FL
Posts: 965
Total Cats: 7

The AFPR clamps down the return line to raise fuel pressure when it sees positive pressure (aka boost). So it does add more fuel to each squirt because of increased pressure.

The reason people are surprised is because AFPRs aren't usually used with programmable ECUs since you can just throw on bigger injectors and aren't working with a stock ECU's limitations. I don't see why it wouldn't work, it make might initially dialing in the VE table a little more annoying, but that's it.
messiahx is offline   Reply With Quote
Old 11-28-2010, 07:41 PM   #3
Junior Member
Thread Starter
Join Date: Oct 2009
Posts: 89
Total Cats: 0


Do you think I could safely ditch the AFPR with the MSPNP, the Greddy at 5 psi, and stock injectors? It's a limitation of the stock ECU that requires the AFPR?
jonljacobi is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
MS3 or MSPNP Pro konmo MEGAsquirt 22 11-05-2015 03:32 PM
MS PNP requires reading and following directions??? satisfied MEGAsquirt 141 10-06-2015 11:44 AM
why is my car running like pewp? (tune/datalog) itsMikey MSPNP 3 09-28-2015 07:40 AM
mm0105 TABLE SWITCHING WIRING? slomiata MEGAsquirt 2 09-15-2015 01:54 PM

Thread Tools

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 06:53 PM.