How bad is my afr? Pics with chart Inside

[jayson427]

So I'm just curious how bad my numbers are and what others think. I had a set back with wiring in my afc which will be done soon. I'm just not sure how concerned I should be until I can adjust everything.

 

[undefined0000]

So I'm just curious how bad my numbers are and what others think. I had a set back with wiring in my afc which will be done soon. I'm just not sure how concerned I should be until I can adjust everything.

Can't see any pics, but really, you want to go for 11.5 WOT and no leander than 16 when cruising if you have no cat, otherwise, you'll melt the cat, so aim for as close to 14.7:1 as you can if you have a cat.

 

[Sebba]

Uuuuh, where's the visual?

Can't see any pics, but really, you want to go for 11.5 WOT and no leander than 16 when cruising if you have no cat, otherwise, you'll melt the cat, so aim for as close to 14.7:1 as you can if you have a cat.

I'm sorry, you haven't the slightest clue. Ignore this guy.

Your target AFR should be about 13.2 - 13.5 at WOT.

 

[jayson427]

Sorry I'm on a new phone not sure why they are upside down either.

 

[Sebba]

Bro we can't even see jack shit, let alone upside down.

 

[undefined0000]

Uuuuh, where's the visual?



I'm sorry, you haven't the slightest clue. Ignore this guy.

Your target AFR should be about 13.2 - 13.5 at WOT.

Whoops, I just saw AFC and figured "Turbo" , it was a simple mis-read, no need to insult, jeez.

 

[jayson427]

Sorry about the pics but I think I got them up. Yeah no turbo just high comp motor I'm only worried with the 13.4.

 

[Sebba]

You're good at 13.4. Rich as phuq in the top end, take some fuel away.

 

[jayson427]

Why would the shop tell me to take it easy that it was lean at mid range.

 

[silvreclips]

Because they dont know what they are talking about. Each motor is different so there is not really an exact AFR to tune for. It usually falls somewhere between 12.8-13.8 on a NA motor. You just have to play around a bit to find what works best for your motor.

 

[Sebba]

This is one of those instances where I prefer to have an EGT gauge just for giggles. Then you'll know if you're lean.

 

[GRAVEDIGGER]

Why would the shop tell me to take it easy that it was lean at mid range.

Lean on a TURBO engine?? Yes!

Lean on a naturally aspirated engine?? No!

Sounds like another confused shop.

 

[Boostdriven]

Your air/fuel ratios are kind of all over the place, if you can tune them out to more of a flat line your car should have more linear power band.

Shot for something like this.

2----13.3
2.5--13.2
3----13.1
3.5--13.1
4----13.0
4.5--13.0
5----12.9
5.5--12.9
6----12.9
6.5--12.8
7----12.8

Sorry I'm on a new phone not sure why they are upside down either.

And your pictures are upside-down because when you held your phone over the paper you had it tilted forward just enough for the camera to flip I've done that before

 

[jayson427]

Thanks for the info guys. My car is on the stock ecu so I'm glad it's runnable until I get the afc wired in. The shop I took it to is more of a turbo build shop. Maybe that's why they got it mixed up.

 

[GRAVEDIGGER]

The shop I took it to is more of a turbo build shop. Maybe that's why they got it mixed up.

Yeah, maybe that's why...

Good luck with the car, but maybe it's time to do like I did years ago and just learn to work on the stuff yourself. That way you don't have to rely on a "shop" to do the work for you. I find it more rewarding that way.

 

[jayson427]

Definitely, this is my 3rd eclipse so I know how to do a lot on the 420a. Besides major things and wiring never works out with me .