Spi, Mpi, what is the difference?

1. Docsamty Frequent Poster Joined: Jan 2009 Oxfordshire - Banbury Posts: 713 S1 Rallye

   #1 17th January 2009, 20:43

   Hi, I have seen a few threads/posts about this topic, but i want to be 100% sure. Basically; I bought a 2000 reg 1.1 saxo forte today, and want to know what i have, s or m pi ? what is the difference? And which is better. So far i believe they stand for; Single and multiple point injection?! Is this right? Thanks, Sam.
2. Sophia_Bush Saxperience Post Whore Joined: Jan 2007 Shropshire Posts: 9994 Moonstone Blue 106 GTi

   #2 17th January 2009, 21:05

   SPI
   
   
   
   MPI
   
   
3. RichyBoiVTR Regular Poster Joined: Sep 2008 Posts: 324 mk2 8valve

   #3 18th January 2009, 00:53

   spi means u get 1 point of injection mpi means u get 4 injectors okies...
4. Marshy Established Member Joined: Sep 2007 Plymouth Posts: 1951 Ibiza FR Tdi

   #4 18th January 2009, 00:56

   A 2000 forte will have the MPI engine. The 1.1 MPI is more efficient than the SPI, its smoother, and picks up a little quicker too
5. shaunyboy Frequent Poster Joined: Sep 2008 Manchester Posts: 538

   #5 18th January 2009, 10:39

   Single point injection was the modern replacement for the carburettor, only the jet was replaced for an injector, And few sensors were addded so the ECU could calculate the correct ammount of fuel, Very basic and simple system, the early corsa's had them and the saxo 1.1's, And i think the early puntos.
   
   Multipoint injection consists of 4 injectors, one for each cylinder, this system is more complex and involves more sensors to control fueling. This system is also more effecient and provides improved performance.
6. Docsamty Frequent Poster Joined: Jan 2009 Oxfordshire - Banbury Posts: 713 S1 Rallye

   #6 18th January 2009, 14:58

   Thanks Guys, helped alot!