Blind fuel tuning...

[shenanigans]

SO do you think there is a safe amount a car can run leaning it out.

Not talking much, just a bit. I know its not ideal and to get real power need a wideband, just looking for a little bit extra.


AT the moment running 5* advance, no problems on 87. Definitley will recheck when it starts warming up again.

I also have COT on. Can I say take the fuel table and multiply it by a number like .90, or .95 or so... I am just looking for an amount to get a base.(like the leanest of tunes runs 97% of the fueling table) So I would run something way safer like 99%.

I also know its not as easy as hitting the whole table, that it will fluctuate throughout the RPMS but trying to tune blindly.

[slow6]

I'm blind too.
Thats an intresting fuel table idea ya got thare!
I hope it works out.

There IS NO "Actual AFR" PID on your scanner so how can you know what your actual AFR is without a Wideband?
There is no "Commanded AFR" either.

After ALL the calculations HPT goes through to get your Commanded AFR, HOW do we know if we're running rich or lean?
LTFT/STFTs dont tell v6s crap.

You threw in 5* advance, when you didnt even check your KR? I'm sure you got some KR (stock).

[slow6]

Originally posted by slow6:
I'm blind too.
Thats an intresting fuel table idea ya got thare!
I hope it works out.

There IS NO "Actual AFR" PID on your scanner so how can you know what your actual AFR is without a Wideband?
There is no "Commanded AFR" either.

After ALL the calculations HPT goes through to get your Commanded AFR, HOW do we know if we're running rich or lean?
LTFT/STFTs dont tell v6s crap.

You threw in 5* advance, when you didnt even check your KR? I'm sure you got some KR (stock).

PE Fueling:
you take the base a/f say 13.1:1 then subtract what the PE cell vs time says ie -3.1+13.1= 10.0:1 AFR

this is the only way I know to find out the AFR.

What do you need a 150mph Speed Limiter for Eric? lol

[foff667]

Originally posted by slow6:
I'm blind too.
Thats an intresting fuel table idea ya got thare!
I hope it works out.

There IS NO "Actual AFR" PID on your scanner so how can you know what your actual AFR is without a Wideband?
There is no "Commanded AFR" either.

theres a commanded afr in the scanner...in the editor its just a simple calculation as you stated.

[slow6]

Originally posted by foff667:
</font><blockquote>quote:</font><hr />Originally posted by slow6:
I'm blind too.
Thats an intresting fuel table idea ya got thare!
I hope it works out.

There IS NO "Actual AFR" PID on your scanner so how can you know what your actual AFR is without a Wideband?
There is no "Commanded AFR" either.

theres a commanded afr in the scanner...in the editor its just a simple calculation as you stated. </font>[/QUOTE]I Quickly overlooked that, I was hoping you'd prove me wrong, sorry.

In Scanner, under "Table", &lt;insert&gt;key, "Fueling", "Commanded AFR %"
Theres also an AFR Error %, under Custom

[foff667]

well in 2.0 you should see commanded high res or commanded low res depending on if you have a v6 or v8

[shenanigans]

Originally posted by slow6:

You threw in 5* advance, when you didnt even check your KR? I'm sure you got some KR (stock).

Actually been checking it thoroughly, and haven't seen any knock.

I am gong to recheck when it starts warming up, hasn't really been hotter then 90 in awhile* for awhile. But once spring/summer rolls around I will recheck and see whats going on. If I have time today I'll check it but I think its in the 50s...

I can see the commnaded AFR, just have to add it in your scanner. I "half" did a track tune, slightly judging by where my injectors were maxing out the most, and leaning it out slightly. I had a little more timing, and I was running 100 octane. But it was a track only deal.

ran 93.5 mph with 3.42s aluminum driveshaft, shaved lid, and cutout on stock catback. Even bogged(not sure how that affects your mph, I know spins inflate it) the day I broke the tranny again. (and before someone asks belt was on, was getting used to clutch, and the differnet set of street tires I was using)

It helped a bit, but I had a feeling I might be running a bit leaner then I should. I uploaded the scan here not too long ago.

[slow6]

Originally posted by foff667:
well in 2.0 you should see commanded high res or commanded low res depending on if you have a v6 or v8

I've got commanded Low res

ERIC: what are your LTFT/STFTs? I guess it doesnt matter and stock o2s ARE WAAAAY off.
But mine are +20 range.
Good luck, hope we can get this question answered!!

[slow6]

once I get my wideband, i will help you with your fueling

[foff667]

i recommend against any sort of blanket tuning...even the mail tunes I've been privied to view barely touch fueling at all. When you start tuning with a wideband you can see how different your new tables will be from the old & how much it varies from one car to the next.