Do You Want A Lean OR Rich AFR? | Fuel VS Power!

Dude were you at the dentist b4 this upload or are you high on coke?

Could've run at 1.04 with very little loss, also the richer the run the lower the power lol

Sir, going from 4500 feet ASL (0.06685 Air Density) down to Sea Level (0.07650 Air Density) (a 14.435% increase of air), is this an automatic increase (adding) 14%+/- fuel to compensate for the increase of air?

......interesting.

Trying to learn as much as I can. Gotta build that desperately needs a tune. Fueling up top seems to be good about 12.5-11.5:1 afr But down low on rpm and load the afrs are way too lean. Between 19:1 down to 15: at around 3-5k rpms. And most shops w ont touch it because its such an odd build.

So on a street car, with 0.95, you can save fuel and still have full power. On a forced induction or high comp engine i agree 0.86 to 0.90 is probably safer!

awesome video. just a few questions: what does "eare" and "muicks" mean?

Dynamic compresión. Is everything.

Holy shit. I actually understood this.

Man, this is some great stuff.

Please make more shorter videos likes this

The channel you can trust.

I think E10 gasoline need lower than 14 AFR to make maximum power

Holy shit he just deaged by like 20 years

Hi does this Lambda value include motorcycles? 4 stroke engines.

How about the EGT across the AFR range?

Playback speed change to 1.25 for a rich video setting lol

i have a turbo car, my dyno run actually show the AFR start around 14.7:1 then full throttle to redline RPM, it starts to drop to around AFR 12.2:1.
should i request a tune to have the AFR all the way flat when full throttle til redline?

This video is an awesome find.

I ran my ISF on a Dyno today and asked to show the AFR. The Lambda dipped to as low as 0.79 or so and I could see the dip in the horsepower curve in relation to the Lambda curve.

My engine did make less power when below about 0.88.

Will have to do some investigation as to why but thank you again for this video.

If my bike is tuned at 4,000 feet ASL, and I go down to 2,000 feet ASL, I understand it is "leaning out." So, if my AFR at 4,000 is say, 13.3, how would going down 2,000 feet effect my fuel? Is there a method of calculation per 1,000 feet? Such as, "As elevation goes up, fuel is adjusted by X% for every 1,000 feet change in elevation."

So, to refine my tune at 2,000 asl, would I ADD or REMOVE fuel, and what % per 1,000 feet? I hope this makes sense. Is fuel compensated per 100 feet or 1,000 feet?

Can u tell why -100 kpa is open throttle? Like more underpresure in manifold means wider open throttle right?

Thanks for doing this. I'm finally getting into tuning

Gee, you saved me countless sleepless nights!!
I was getting mad, by not being able to tune my bike, after getting a 700 💶 street legal full exhaust! The damn thing fries the Powercomander solution...
Now, I'll just focus on the pumping side of things!
I'll buy you a truck of 🍻🍻, if i could..

Great Video and info !! Does a turbo charged engine behave the same ??

Shouldn't timing be adjusted when afr is chsnged?

The data do not lie. Good stuff. Thank you!

amazing video. I love this

THANKS!

Been here since the start thanks for good info man 👍

who the fuck uses Lambda lol.
AFR's in ratio

Great video. I would love to take the course to learn how to tune but money is alway on a budget. These videos are much appreciated and love to see more.

I'm impressed with how little difference such a wide variance in AF ratio made. As in virtually no difference! I would not have expected that. It would have been interesting to see a plot of EGT during each of those runs as well...

Huge thanks👌

Not true in a diesel though

Does overlap effect the a/r value on the wide band sensor?

So I've noticed that my rsx is around 14.3 at idle and under hard acceleration its around 13 something. I guess it's good to go?

What is a safe afr at WOT?

Me watching this trying to convert from lambda to afr and nm to tq 👀😳😳🥺🥺😟😟😟😭😭😭

What is engine load..??

Lambda sucks !!

How do you go WOT and only stay at 2000 rpm?

So, technically, I can do this on the street? I could change it from a basetune to a leaner tune trial and error based on 0-60 time?

So... Timing makes more power??

what is besr afr for diesel to tune? for power and safety??

Hello, this is very interesting but I'm French and I don't understand the all video, can just tell me for you what is the best lambda value for each regime 2000, 2500, 3000 etc ...

Multi-port fuel injection engines do a two stage process first stage is a 15.0:1 AFR second stage will add just enough fuel to give you a final AFR of 13.5:1 all the first stage does is to clean the intake valve or valves of carbon deposits through the intake port of the head then rest of fuel comes from the direct fuel injection part of the process.

Gasoline engines run best at 13.0:1 and Diesel engines run best at 16.5:1 AFR.