Ideal A:F Ratio for WOT, Tuner help/questions

[Dasfinc]

My tuner is on the fritz, and is getting shipped out to get fixed shortly.

In the mean time, my A:F is about stoich (14.4-14.6) under WOT and crusing, and I'm under the impression that albeit its not 'dangerous', its not the best for power, or for the longevity of the engine, and I'm holding off on driving it hard until I get my tuner back to work on this.

What should I be aiming for under WOT once I get my tuner back and can start altering my files again, by the sounds of it I want fairly rich...? 11.8-12.0?

Click to read more...

 

[SleeperLS]

11.5 is a safe range to shoot for. you could always lean it out a bit to 12.0ish later

 

[Eagle]

Which engine is this on? I'd say 11.anything is too rich for NA applications. I'd shoot more for mid to upper 12's assuming NA...

 

[sinisterc6]

My car was 11.8 stock, 13.1 with bolt-ons and a tune. Now with FI im at 11.0 and its considered conservative. 11.5-12 would be more aggressive



at cruise an AFR of 14-16 is normal and beneficial to good gas milage

 

[Bob Kazamakis]

Which engine is this on? I'd say 11.anything is too rich for NA applications. I'd shoot more for mid to upper 12's assuming NA...

He's boosted yo!

 

[Mook]

if this is on the blown ranger, id say 14.0 is very dangerous territory.

i never ran any of my boosted cars over 11.8

 

[jason05gt]

NA should be near 13
Boosted should be near 11.5 (if you have forged internals, you can lean it out .2 or so)

Both of these are WOT A/F ratios. During cruise, your A/F should be right at 14.7

 

[SleeperLS]

yup, got that supercharged 5.0

 

[Dasfinc]

if this is on the blown ranger, id say 14.0 is very dangerous territory.

i never ran any of my boosted cars over 11.8

On the flip side, I'm using the AEM UEGO Wideband, which I'm under the impression is self-calibrating...

Its just going to sit anyways right now, I suspect the biggest issue is that its running a "NA Premium fuel tune" which is what I'm trying to change... Goddamned retarded tuner :-\

 

[jason05gt]

Why don't you get the car tuned on a dyno? Talk to Hans. Maybe he will let do a couple of hits and you can adjust the tune.

 

[Dasfinc]

Why don't you get the car tuned on a dyno? Talk to Hans. Maybe he will let do a couple of hits and you can adjust the tune.

I'm not nearly skilled enough with my tuner to make real use of a dyno I suspect...

I've mentioned before to people that I'd be more than happy to pay good money to get it tuned, but noone has wanted to touch the truck.

 

[Eagle]

oh well hell. FI should be mid 11's. WOT @ 14.x is meltdown territory.

I'd cease and desist immediately with that WOT stuff.

 

[Dasfinc]

oh well hell. FI should be mid 11's. WOT @ 14.x is meltdown territory.

I'd cease and desist immediately with that WOT stuff.

That was already the plan , Just wanted to figure out where it needed for when I get the tuner back. Don't want my truck to Implode

 

[XxApollynxX]

I hit low 13's upon WOT and i've even had it dip into the 14's on a really cold night with the boost turned up this is on my AEM UEGO.

But now its turned back a little 12.3-12.5 pretty much every pull.

 

[Mook]

on the evo???

 

[Bob Kazamakis]

So your AF isn't changing from idle to wot? That's not good.

 

[10sec]

on the evo???

I've seen Chris tune them on 110 in the 13's. One on C16 at 36psi pulling 13.8AFR's guess those cars can run lean and mean

 

[02BlueGT]

on the evo???

E85's one hell of a drug

 

[Pressure Ratio]

I've seen Chris tune them on 110 in the 13's. One on C16 at 36psi pulling 13.8AFR's guess those cars can run lean and mean

Lean is mean. And they always make the most power right before they melt down. haha

OP, do your self a favor and get some one to tune it before you waste the money you already have into the truck. The money spent on a tune will be well worth it in the long run.

 

[Dasfinc]

Lean is mean. And they always make the most power right before they melt down. haha

OP, do your self a favor and get some one to tune it before you waste the money you already have into the truck. The money spent on a tune will be well worth it in the long run.

Do you have a recommendation? as I spent a good amount of time trying to find someone last year and noone would touch the truck.

And as mentioned, it is running a NA Canned tune at the moment, I will see what the canned FI tune does as soon as I get my tuner back, otherwise I will just dump fuel across the band and start testing

 

[Pressure Ratio]

What device do you have for a tuner? You could contact them to see if they have any recommended tuners in the area.

ooops Just saw the "sniper tuner" in your sig. I don't know any thing about that device. So I would call them for a recommendation for sure.

 

[Dasfinc]

What device do you have for a tuner? You could contact them to see if they have any recommended tuners in the area.

Delta Force 'sniper'

Small operation, I'll ask for a recommendation, but because its not a big name tuner, I doubt there will be anything local.

I purchased an SCT last year, and they didn't reply to any calls/emails that I sent them asking for guidance. The hand held module can't remove PATS from an ECU, so I had to go for an option that would let me do that on my own.

 

[Pressure Ratio]

Hmmm you might want to surf their forum to see if you can get any help or recommendations. Most people will not tune a system they are not familial with or selling. I know when some of the early "self tuners" came out no shops wanted to touch them. They wanted to only tune the systems they were trained in.

You might have to get a crash course in tuning your own ride.

 

[Eagle]

Most tuner mfg's no longer have much of a support system to provide that kind of feedback to their users. Sucks, but its true.

IF they have forums, thats a great option for end user feedback.

 

[Dasfinc]

Hmmm you might want to surf their forum to see if you can get any help or recommendations. Most people will not tune a system they are not familial with or selling. I know when some of the early "self tuners" came out no shops wanted to touch them. They wanted to only tune the systems they were trained in.

You might have to get a crash course in tuning your own ride.

Once I get the tuner back and working, I will do a bit more seat of my pants, and then will probably bring it to a dyno to try to tweak it myself I suppose

Most tuner mfg's no longer have much of a support system to provide that kind of feedback to their users. Sucks, but its true.

IF they have forums, thats a great option for end user feedback.

Sniper has some forums, but the terms in which I purchased this tuner are "Used from a friend" can't register on their forum i think without being the original purchaser... They are fixing it under warranty, so I don't want to ask about anything to risk loosing that basically....