SAFC-II Installed

Post by **PrecisionBoost** » Sun May 29, 2005 4:07 am

Well.... I have installed a SAFC-II into my Optra 5 and it's working fine.

I will hopefully get it on the dyno and let everyone know if it will make any extra power with the naturally aspirated 2.0L 16V

I didn't get it for the N/A engine.... I need it for when I throw on my turbocharger since I'm going to use the factory ECU.... well.... technically it's the ECU from a Suzuki Forenza but that's a minor detail.

I will post my Dyno runs once I'm satisfied with the results.

kinkyllama · Post by **kinkyllama** » Sun May 29, 2005 8:17 am

Find out if that 7hp that the forenza has over the optra is from the ECU or do you already know for sure?

Brian5475E · Post by **Brian5475E** » Sun May 29, 2005 2:29 pm

Do you have the hook up instructions. The optra and aveo have the same wiring I think using the Delphi Ecu. the one under the hood with 2 connections. I think they are K and M. I hooked one up one time, but I think I hooked it up wrong, because when I started it, the engine started surging bad, and it leaned out bad, plus it also threw a CEL. so I shut it off immeditaly and removed it and sold it. Decieded to wait for someone more experianced to do it the right way.

Post by **PrecisionBoost** » Sat Jun 04, 2005 9:05 pm

Ok.... I finally got some dyno time and I'm glad to anounce that the SAFC-II works great with the Delphi management system.

Some systems don't take too well to aftermarket fuel management but this one seems to be perfectly suited.

I don't have the dyno sheets but the maximum I managed to squeeze out of the car was roughly 2whp at the top end..... which is pretty much what I figured.

The factory ECU fuel maps are actually pretty good.... up to about 4500 RPM they are nearly perfect.

After 4500rpm the air/fuel starts to richen up a little but it's not too bad.

I ended up leaning the top end out by 7% to 10% and thats when I made the extra 2whp.

Needless to say buying a SAFC-II would be a horrible investment if you have a fairly stock normally aspirated vehicle.

The SAFC-II is really only needed when a turbo is introduced or when someone does an extreemly serious "all motor" build up.

So for all you guys out there with a practically stock engine..... don't bother with aftermarket fuel management..... spend your money on something that will make you more power ( such as cams or pulleys)

Oh ya..... I allmost forgot..... the swap from the Optra ECU to the Suzuki ECU did absolutely nothing.... perhaps I made 1whp more at the top end.... but that's about it.

I also noticed that the stock automatic forenza hits fuel cut at 6250 RPM instead of the stock 6500Rpm limit my Optra ECU has.