I just had a wideband installed on my car. Innovate LC-1 to be exact.
I plan on boosting the car soon, and the WBO2 is going to stay int he spot that its in, so I figured Id throw it on there to see what the car is doing n/a with my listed mods.
I've read and heard that you gain more power if youre leaner. I think 12.8:1 is a bit rich.
I plan on getting HPT very soon, I want to try and tinker with the car n/a and see if I can get any gains out of it at all. I really want to learn some tuning basics and play with the software before i install my turbo. For me, hands on/in has always been the best learning method.
Anywho. What are your thoughts on this AFR? Should I, Can I lean it out some and expect to see some small gains?
in like 2 places i read that the "optimal" AFR is something like 13.9:1 WOT, is that accurate?
Just looking for some all around info, it struck me as WAAY too rich when I saw it.
Thanks
Matt
"A car just isn't a car without a little blood, sweat, and beers." -- Shadowfire
is this A/F only under WOT?
yes
"A car just isn't a car without a little blood, sweat, and beers." -- Shadowfire
And I just drove it again, it dipped to 12.6:1 for a second.
This is when the motor is completely warmed up if that makes a difference.
"A car just isn't a car without a little blood, sweat, and beers." -- Shadowfire
Under WOT you do not want 13:9:1. Maybe 13:0 to 13:2 at the most.
FU Tuning
Maybe it was 12.9 I was thinking of.
Maybe its spot on, I just thought it was a bit rich.
I will probably just leave it alone and wait till I get the turbo on and start tuning from there. Ive been reading way too much stuff lately and my brain is toasted a little.
I would assume it runs that way (a bit rich) to be on the "safe" side of things.
Thanks for the reply sir.
"A car just isn't a car without a little blood, sweat, and beers." -- Shadowfire
click link
I just bought this book and am about halfway through it, i have been learning alot. its a really good book and its highly recommended on the HPT forums. I thought i knew alot about engines but NOOOO this book totally proved me wrong.
well im at the same spot the OP is at i just installed my lc1 and took if for a drive and under wot im at 13.9:1. and cruising im anywhere from 13.0 to 16.8
and to make sure my sensor is running correctly.. i have this ?
when im driving my led for the WB is on continuously (doesn't blink) does that mean its working correctly? i read in the manual its supposed to stay on after a free air calibration but it didn't say it was supposed to be on all the time after that?
and i do have hpt but they haven't sent me an update yet to unlock my car......
SO_hardcore wrote:well im at the same spot the OP is at i just installed my lc1 and took if for a drive and under wot im at 13.9:1. and cruising im anywhere from 13.0 to 16.8
and to make sure my sensor is running correctly.. i have this ?
when im driving my led for the WB is on continuously (doesn't blink) does that mean its working correctly? i read in the manual its supposed to stay on after a free air calibration but it didn't say it was supposed to be on all the time after that?
and i do have hpt but they haven't sent me an update yet to unlock my car......
Yes the LED stays on all the time. 13:9:1 is way lean.
FU Tuning
i plan to tune it Monday when hpt hopefully sends me an update. but its great to know the led is supposed to be on all the time for a min i thought i broke it. thanks!
There is no "magic" number where every engine is going to make the best power. A good way to find your optimal AFR at WOT is to make multiple runs on a dyno and compare the different air fuels.
Example:
12.5
12.8
13.0
13.2
Compare the results of those four runs, in some places you may see more torque due to being a little richer. What I typically do is leave it a little rich until torque begins to drop(after 5200) and then I lean it out a little.
