Hi,
Have qucik question about the spi injection system. What size is the injector? how many cc/min can it flow.
I am looking into turbocharging a 1108 engine and am concerned that the ECU will not beable to fuel match the increased mass of air.

Has anyone fitted a aftermarket Fuel Pressure regulator? as increaseing fuel pressure only when +ve pressure is present will help meet the fuel demand.

Else if, I have schematic diagram for an Extra Injector Controller, EIC, may have to use that instead..

any help most appreciated.
stefz

Red Cinquecento Sporting

VanAaken uses an extra injector and a mappable fuel ecu called an MF2 so i'm guessing the spi injector won't be able to handle the demand on it's own

Hi,

you can raise the fuel pressure pretty easy.
http://www.carsfromitaly.goracer.de/wbboard/thread.php?threadid=21426&boardid=60&styleid=3
See the pictures by maxboost and turn the screw clockwise

or you can take the spring out of the throttle body fuel pressure regulator and put an aftermarket one in on the outlet side. Problem is, you need 3D mapping for the fuelling as you can be at different boost levels for given revs depending on all sorts of stuff. Standard ecu map sensor doesn't do 'positive pressure' either.

Pete.
1242cc cinq,turbo cinq,Cinqs&Seis Yahoo group,Clubcento

thatnks for replies
Ive seen Presure variable fuel pressure valves, which increase fuel pressure as pressure increases.
or else ill build an extra injector controller, I have 2 185cc/mm injectors, they can deliver about 37hp worth of fuel each at max.

when the engine build starts I'll b postng all the pics and info on my website, aswell as the extra injector controller info..

thnx

stefz

Red Cinquecento Sporting