[adamzx5]

Can somebody explain global spark to me and what is the best setting? Also would I have to add fuel at wide open throttle ?

[GFXjamie]

Spark adjustment across entire rpm band as opposed to changing within a range. You want spark advance higher in higher rpm for more power typically with a high revving motor. The spark advance on my sedan ramps up like crazy towards top end

[adamzx5]

So if I set it at +2 it will be at +2 all the way across?

[GFXjamie]

Correct. As for air to fuel, you really need a wideband to do anything.. Even with spark to adjust you should be on a dyno to make sure you aren't lossing power but improving it and where.

The first time I dyno'd I adjusted between runs when I was N/A and I ended up gaining about 5whp from spark and fuel adjustments on the x2

[ZTWsquared]

(05-04-2013, 11:18 AM)adamzx5 Wrote: Can somebody explain global spark to me and what is the best setting? Also would I have to add fuel at wide open throttle ?

To get the most out of advancing the spark you want to increase the octane rating of your fuel - newer cars will advance the timing when it senses higher octane fuel, and similarly, older cars will reduce timing when it senses knocking.

[adamzx5]

So im using 91 in my 03 should I raise it or lower it?

[ZTWsquared]

(05-05-2013, 02:06 AM)adamzx5 Wrote: So im using 91 in my 03 should I raise it or lower it?

Well generally speaking the higher the octane number the more timing advance you can safely do ... your specific situation is harder to assess - depends on how much timing advance your tune starts with.

[adamzx5]

Ok cool. Thanks for the info.

[hardk0re]

more timing = more power
but more timing also can = detonation=destroyed engine.

I wouldn't adjust that unless you've got someone to validate your not detonating. I know the ZETEC knock sensor sucks so you can't really go by that.

[adamzx5]

Yea once I get the wideband in I will play with it some more. Where is a good place to put it on the fswerks race header?

[adamzx5]

I leaned it out a bit and added spark nothing to major. But its pulls like a new car all over the rpm range. From about 1500-7000 it pulls alot harder, I raised the idle and its manners around town are much better. I just can't wait to get it on a dyno to really get it tuned.

[Scorcher000]

So do you have a racer package from SCT or some other tuning software?

Just curious...

[adamzx5]

No just using my x3. I have been thinking out getting the pro racer package though.

[1turbofocus]

If you want to give me a call or call me I will show you a few things that will tell you if your engine wants more timing or doesnt want more timing , you have the xcal
I can take over your laptop hooked to the car and show you things like I was sitting in the car with you

Tom