Mawnee

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.

mysql101

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.

Brettus

iTrader: (2)

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 .

Mawnee

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

mysql101

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

Mawnee

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

mysql101

don't let TeamRX8 hear you!

thewird

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

thewird

09Factor

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

chickenwafer

iTrader: (9)

Cruise at stoich.

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

Kane

iTrader: (1)

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.

Rote8

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.