I'm about to install an safcII, and I'm wondering what peoples settings are who have a similar setup. Since the car is mostly stock, I'm thinking the only time the fuel mixture would need to be changed would be when the boost goes past the 9psi that the fcd holds the pressure signal at.

 

Stock full-load mixtures are very rich. Most likely you'll be subtracting fuel, not adding.

The only safe way to do this sort of tuning is on a dyno with a wide-band A/F meter. Don't ever rely on other people's settings, as all cars are different (even with similar mods) and you don't know if theirs a safe tune anyway.

 

This is a classic question.
The vendors sell AFR gauges for tuning, but many members say they are next to useless.
A wideband AFR would be great, but not on my budget.

So- maybe on a mildly tuned engine, would a cheap AFR gauge be helpful?

 

No.

Take it to a dyno and get it tuned with a wideband.

 

I do eventually plan on getting it dyno tuned, but for now I'm just looking for a way to run a decent amount of boost (12psi or so) and still be safe. I know I'm losing quite a bit of power just faking it like this, which is why I'm hoping someone can give me an example of thier settings so I wont be too far off.

And yeah, other cars will definitly be different than mine, but right now I have no idea if I should add .5% more fuel or 50% more fuel when its at high boost. I'm just looking for ballpark numbers.

 

The cheap AFR is only good for round about guesses of what your car is doing. I have one, but tuning with it is not going to happen.

 

what exactly is a wideband AFR? whats the dif between a regular one. anybody got any pics?

 

widebands use 4 to 5 wires ont he 02 sensors...typical ones like the autometer one just tap into ur existing single wire 02 that comes stock and reads it off that. the wideband usually is additional to ur existing 02.

 

howmuch do they run for and who makes them?

 

widebands are expensive, generally over $1k, though theres some DIY kits out there that are cheaper. Any way you go will be more expensive then dyno tuning though. And unless you know something about tuning a car, or just have alot of extra money, I'd say spend the money on dyno time first.

And I know theres alot of people are there running safcs, please just tell me your settings and your mods. I promise I wont bitch if I blow my engine running your settings

 

Widebands have FIVE wires. Six going to the controler.

What you are asking is impossilble to answer. Sorry. You just bought a tool that is going to require you to spend more money

You will need to do tuning on a dyno. Or buy a wideband.

They are very resonable. The DIY are just as good as the ones that an average dyno would use.

I would personally recommend a Techedge unit. I would recommend you build it your self. If you have soldered before, are patient, and have common sense you can build one.

The version 2.0 can be built with a sensor at the $300 mark. This price includes the sensor. The new version uses a sensor that is very available and can be had for $40 or so.

http://wbo2.com/

James