AFR ranges with tunes ?

So when I drive tommoro what should I be looking for driving , wot, etc. I'm running the mpt 93prx tune, jlt intake, X pipe, roush abs, and bbk shorties

Cruizing should be 13.9 to 14.2....wot should be in the low to mid 12s. Just a note, it takes a couple seconds to settle on a number when your at wot. Its not imediate

Ok so all seems in normal range ..... But here's another question say I'm cruising doing 55 coming to a stop light let off and as I'm almost to a stop it briefly dips to 12.5 ish and then comes back to 14.0..... Or cruising and I left to coast and it jumps to 20.00 but soon as I put gas back to it it goes back to 14.0 seem normal ?

20 is normal when you let off and use the motor to slow down. The ecu cuts fuel to the motor. Basically its not running at that point just spinning. The other thing you asked is also normal

Ok cool deal thanks for all the insight I've been curious about it for a while now now I feel more comfortable that everything is ok

Stock Tune:
AFR @ Cruise: 14.0-14.2

Unleashed:
AFR @ Cruise: 14.6-14.7
AFR @ WOT: 12.1

MPT:
AFR @ Cruise: 13.9-14.2
AFR @ WOT: 11.8

Can anyone confirm AFR @ WOT on stock tune?

See after a few datalogs on my unleashed 93 my AFR cruising was still 14.7-15.2.....mpt is still at the normal range

Maybe Torrie@ tmcphail can help us out here? What is the magic behind cruising AFR 14.7 compare to our factory stock cruising AFR 14.0? How does it affect our cars/engines?

For stock tune at WOT I gathered a few measurements. None really stabilized all that much...but the average was between 12.2-12.4

It dipped to 11.9 at one point and rose as high was 12.6...both briefly.

Mpt uses more fuel at wot to run more timing

Artem said:

Stock Tune:
AFR @ Cruise: 14.0-14.2

Unleashed:
AFR @ Cruise: 14.6-14.7
AFR @ WOT: 12.1

MPT:
AFR @ Cruise: 13.9-14.2
AFR @ WOT: 11.8

Can anyone confirm AFR @ WOT on stock tune?

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I just saw this post this morning and since I just installed a MPT tune last Friday and was running errands today, I thought I'd check mine. My numbers are exactly what Artem states here! Being a leftover from carburetor days 11.8 seems kinda lean at WOT, but you can't argue against the results. The tune was 91 Race.

D BERRY said:

I just saw this post this morning and since I just installed a MPT tune last Friday and was running errands today, I thought I'd check mine. My numbers are exactly what Artem states here! Being a leftover from carburetor days 11.8 seems kinda lean at WOT, but you can't argue against the results. The tune was 91 Race.

Click to expand...

Actually 11.8 (seen some MPT cars as low as 11.4) is fairly rich at WOT for an natural aspirated vehicle. That is entering FI territory (10.8-low 11's) but not quite. I prefer 12.1 at WOT for n/a applications. Even 12.8-13.2 you're safe (n/a), people don't realize too much fuel can be just as catastrophic and too little. Each to their own though..

D BERRY said:

I just saw this post this morning and since I just installed a MPT tune last Friday and was running errands today, I thought I'd check mine. My numbers are exactly what Artem states here! Being a leftover from carburetor days 11.8 seems kinda lean at WOT, but you can't argue against the results. The tune was 91 Race.

Click to expand...

I'm running a SCTx4 93 tune and my AFR is 14.0 -14.2 cruise and 12.0 -12.2 wot.

I'm running 93PRX and my AFR idling and cruise is at 13.9 to 14.1. No wot yet cause of traffic.

So what's the verdict between unleashed and mpt ..... unleashed idle cruising was high 14s to 15.2 and mpt is pretty much like stock at 14 but on the flip side I got better 0-60 with unleashed than mpt