Drivetrain New Helix 15% Twin Cone 380cc injectors

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Apr 1, 2006 | 05:51 AM

#26

latte hiatus

5th Gear

Joined: Feb 2005

Posts: 654

Likes: 0

From: East SF Bay Area, CA

Quote:

Originally Posted by macncheese

Most newer cars operate under the back of the valve theory but the atomized from the injector was the way to go with things like TBI. The problem with atomizing fuel that far away from the valve is that the high speeds in the intake system seperates the fuel suspended in the flow and the fuel ends up on the walls.

Out of curiosity, will hitting the back of the valve improve performance in our Minis by combusting the fuel more completely? I ask because the stock injectors appear to atomize the fuel more compared to the Helix injectors - if the engineers optimized the fuel injectors for an atomized spray pattern, will going with a spray pattern that hits the back of the valve help increase mileage and performance?

I confess I don't know much about fuel delivery systems, so please bear with me. I will be purchasing larger injectors to solve the pre-ignition pinging problem I have, and I am eager to learn more about the Helix injectors as compared to stock.

Apr 1, 2006 | 08:30 AM

#27

obehave

6th Gear

Joined: Sep 2002

Posts: 2,196

Likes: 0

From: Hampton, VA

Quote:

Originally Posted by OzMini

Hi Randy, you keep giving us so many new choices to make... so if I have a 15% pulley, opened up air box with drop in foam filter, and your ignition upgrade, should I next go with an improved exhaust or these injectors? How essential would an ECU re-map be at this stage?

My prime motivation is to increase useful (daily driving) power without sacrificing fuel mileage.

Cheers,

Do the exhaust first.
I doubt the injectors will do much to improve daily drivng. And yes, to optimize the injectors a new map would be the right way to go.