What is everyones AFR at normal driving without getting into the boost? Oh yea i have a turbo.

 

When not in boost it should be 14.7-1. Same as stock.

 

When in boost, shoot for 11.5 imo

 

You have to test your best A/F in WOT conditions at the track.

I went for 11.5 and lost ET big time. My trucks like low to mid 12's.

 

mid 12's?! Wow, how long have you been out that afr.

I have closed the swithcing gap of my o2's and almost always run 14.9 to 15.1 for part throttle.

11.7 is what I like for wot, but i pretty much shoot for 11.5. I am looking for this motor to last awhile.

 

i think most mild turbo set up's will make a little more power at 12.0-13.0 but i wouldn't run it there just for an extra tenth or whatever. i have done a ton of tuning on my truck and there are many ways to pick up power. if you lean it out you will gain power, if you add timing you will gain power, if you add boost you will gain power. from the testing i have done the best thing you can do if your really looking for the most power(and you have a large enough compresor) is to run a very safe a/f ratio and moderate timing and then crank up the boost till the edge of knock.

 

Yeah, the hemi's are funny. I have an autoxray 6000 and can watch knocks, trims, etc.

The truck just lays over when too fat on the high end.

 

14.7-15.1 crusing. I see 10.9 on the dynojet, and 11.2 on the dyno pack, I think we where aiming for 11.2-11.5 afr. I cant look at the wideband on the street at WOT, I need to data log.

 

You guys have to remember that the forced induction is going to be spitting more raw fuel out the exhaust than an NA car. So, you will be able to tune a little leaner than you would think because the O2 sensor will not pick up the unburnt fuel and it will look lean.

That really makes sense with the dynojet vs. the dyno pak. Just goes to show that if you tune for peak power on a dynojet you will be lean and have a greater chance to blow up your engine.

 

I run 11.5 at WOT but when it shifts into 3rd at WOT it will go to 10.5 any ideas as to why it richens up in 3rd gear?