I've started tweaking my Closed Loop fuel to get my fuel mileage back and smooth out a little bucking in low rpm. Just wondering how lean you guys run it for low load cruising.

 

I don't get the question.

A turbo car is just like a NA car when you're not in boost. So I'd expect ~15 AFR at cruise.

 

Kane has a pretty good handle on this I think .

Can you post your closed loop table - I can't be sure which one it is in pro tuner .

 

I know 14.7 ...but alot of people get away with going even a bit leaner for the sake of fuel mileage.

 

yeah, you can do 16, but only if you aren't running a cat.

 

pffft..whats a cat ?

My CL tables are essentially stock atm, I just lowered the exit RPM to 4200 and Exit loads down a bit to make sure it switches to my richer tables ahead of any boost. My o2 sensor has like a 1.7 second latency so I have to kind of predict the future with my fuel tables for safety. I had set my Throttle fuel gear tables really rich when I first put together my "super duper safe" tune and forgoten about them. Found those to be the cause of some low speed bucking

 

don't let TeamRX8 hear you!

 

15-16 as long as its smooth and only in high vacuum.

thewird

 

14.7 - 16.2 @ 20-22 in mg.
No cat.

 

Cruise at stoich.

Just put all your CL fueling tables to a Lambda of 1.00

 

Start at 15.2 and move to 14.7 at RPMS above 3500 and a Load above 30%

That is what I do... but 14.7 is always a good safe bet.

 

How many rpm is that at?

I get 20 in mg at idle and 22 in mg at a cruise if I am doing about 2K to 3K rpm
If I cruise at 4K (about 80Mph) I only get 16 to 18 in mg.

Still get 28 in mg on deceleration.