silly question?

1. farmerchris Regular Poster Joined: Sep 2009 near to barrow Posts: 384 03 saxo desire 1.1 mini city 1000cc

   #1 8th November 2009, 20:52

   iv been looking at threads where people have turboed there cars, they keep mentioning a 5th injector, iv seen pics of this on the air intake (i think thats what it is) what is the purpose of this 5th injector?
   
   cheers
2. AlexBp West Midlands Joined: Dec 2007 West mids Posts: 23149 Supra,civic GL

   #2 8th November 2009, 20:53

   to put more fuel in to keep the mixture right with the higher volume of air

   1 user thanked this post: farmerchris
3. JamesRm Forum Section Moderator Joined: Aug 2008 Liverpool Posts: 15517 Saxo VTR

   #3 8th November 2009, 20:57

   As above mate, when you fit a turbo it is forcing a lot more air than standard into the engine, this in turn means your need to supply more fuel to get the mixture right
   
   Not really a silly question mate, no questions are silly if you genuinly dont know and want to learn
   
   Wont learn unless you ask afterall, hope you understand now

   1 user thanked this post: farmerchris
4. farmerchris Regular Poster Joined: Sep 2009 near to barrow Posts: 384 03 saxo desire 1.1 mini city 1000cc

   #4 8th November 2009, 21:00

   cheers
5. CoolC Established Member Joined: Oct 2007 Swindon Posts: 1569 Jap Import Supra 3.0TT 430bhp 6sp

   #5 8th November 2009, 21:02

   As said really, 5th injector is so you can keep standard ECU. Keeps the costs down. You need a mf2 controller to run it which tells it when to send in more fuel.
   The other option is standalone and bigger injectors etc