Not wanting to go off topic, i see the injector comment has gone over a few peoples heads
It has nothing to do with the amount of fuel delivered to the cylinder and has nothing to do with AFR
Is all to do with the fuel mixing with the air, the better it is mixed the better it will ignite
On a higher reving engine the air speed in the inlet tract will increase as revs rise, therefore if you use a second set of injectors further up it will give the fuel more time to atomise with the air giving a bigger bang in the cylinder.
This is why it is used extensively on touring, rally and rally cross cars I have come accross
The WRC Puma gained 12bhp from this set up
SB Developments has dyno proven it works too on there 2.0l 300bhp duratec
I have also used this on a 4cyl turbo engine in the past and seen noticable improveents in power and driveability
Do a google search for more info as its off topic
|