Z3r0

I have a VAFC installed on my N/A along with stock TII injectors (550's I believe) and a Walbro fuel pump. I was wondering what would be the theoretical setting on the SAFC which I could get the TII injectors to flow like my stock N/A injectors. Thanks!

Bambam7

Theoretically....Don't bother!

Why the hell do you have a Walbro and 550's on an N/A????? Unless you have a peripheral port you won't ever need that, and your car will run like *** even with the S-AFC tuned carefully.. cold starts and on-off throttle transitions will be problem points.

Well... the 550's flow 20% more than the 460's, and the Walbro bumps up presssure a little bit, so I'd probably say -25% or so... but that seems to change across RPM's... I had the same setup on mine on mine (minus tha Walbro) but only because a turbo was going on soon....
Start with -20% and go from there.. using your o2 sensor voltage as a rough guide, (shoot for around .75 or so) and how the engine runs/feels.

It's still pointless though. Most N/A's gain more power by leaning out the stock setup.

Z3r0

thnx for reply thats what I thought but wanted to make sure. lol actually I'm doing what you did.. jus doing my turbo project in stages ^_^