Ok, i'm a bit confused on the power enrich table vs. rpm...I was looking at a GM Stage 2 tune....and to me, it seems like it's running WAY LEAN under WOT. Maybe i'm reading it wrong, but to me, at 6750 rpm, it seems like it's commanding a 13.15 af ratio! Am I right? The stoich is set at stock which is 14.69971...here's a pic:

http://i81.photobucket.com/albums/j206/MemphisR24/GMStage2Lean.jpg

You are reading it correctly. However, it doesn't look TOO bad. You can see they have a 12.5-1 ratio right in the power band, and then lean out as you get out of the power band. Its a misconception that you need a totally flat AFR across the entire RPM range. You could probably richen that up a bit with little loss of top end power.

Thanks guys, yeah it was definately knocking...When I looked at the pe table...i was like that can't be right...on my stock pcm it's set to like 11.3 at redline..

Dude if you were running a 13.5 commanded afr then your actually AFR had to be around 14:1!!!one!!!!11111!!!111!11!1111!!111111!1!1!one! one111one1!!

yeah that is no good man....

I usually run around a 1.30-1.40 multiplier in the high rpms.. and 1.25 ish lower down where boost really starts kickin in

Its pretty well known the GM flash is a bit sloppy and if you clean it up you can pick up almost another 10hp out of it

Yupperz....I richened that mofo out...and thanks to paul, i even had a new table to go along with that. The car is running beautifully :)

Dude if you were running a 13.5 commanded afr then your actually AFR had to be around 14:1!!!one!!!!11111!!!111!11!1111!!111111!1!1!one! one111one1!!

Hey, it wasn't me who made that tune lol. I put the table from a stock 06 in instead of that lean one

OK I know its a nooooob question but....how do you read this table? How do I know my AFR? Does this look OK?
http://i107.photobucket.com/albums/m301/M88ArRamadi/BillsAFR.jpg

I personaly get no knock with this bin. Do you get any knock? I remember you used to be the king of knock...and you where like this:cussing: but i think your right it is running lean....especialy me running more air (2.8") then what the stage II was meant for a 3".

a little chart for the commanding AFR
1.30 = ~11.3
1.29 = ~11.4
1.28 = ~11.5
1.27 = ~11.6
1.26 = ~11.7
1.25 = ~11.8
1.24 = 11.9
1.23 12.0
1.22 12.1
1.21 12.2
1.20 12.3
1.19 12.4
1.18 12.5
1.17 12.6
1.16 12.7
1.15 12.8
1.14 12.9
1.13 13.0
1.12 13.1
1.11 13.2
1.10 13.3
1.09 13.4
1.08 13.5


thanks for posting that i was looking at that chart and i didnt know how to read it i was like :wtf: maybe i shouldnt order hp tuners if i cant even understand this but nevermind

Its only lean if other enrichment modes such as Cat Over Temp and Piston Protection are disabled. Power Enrcihment isn't the only enrichment commanded A/F is calculated from. Setup a PID to log Commanded A/F to see the real tune.

Well....they are definately not running lean...the other tables under fueling...welll all affect a/f ratio as well. So, even though it was commanding a 13...it still could've been safe...I just made his car extra safe. But i'm pretty sure GM knows what they are doing...and the gm stage 2 guys that dynoed are all rich as hell...its just the tune is a little awkward to look at (to me at least), but I can't see GM actually making the car run a 13...

The new Power Enrichment table looks like the stock 06 one...I hope it's not too rich...if so, I can always lean it out a bit for him...

http://i81.photobucket.com/albums/j206/MemphisR24/06StockPETable.jpg

So are you guys all saying the the GM S2 tune is lean on the top end of the RPM band? Because I was always under the impression that it was way rich, hmmmm maybe HPTuners in my future!

yeah and whats my car gonna be running like if i have stage 2 with a header and downpipe does the header and dp make you run even leaner on top of an already lean stage 2 because that is definatly no good.

....I belive every gm stage 2 dyno i've seen has a/f ratios in the 11's....I just changed this one because it wasn't working right....Remember, every car is different....


wow it's 330 in the a.m. and i have work in ..(yes Christmas eve).. 3 in ahalf hours...I think i'm going to bed now lol

shit my pe table was much richer than that, still is too even with my modified stg II on my car...
sorry I missed your call friday night adam, I was at a christmas party and a little too drunk to talk..

lol that's quite ok...I just needed and still need to ask you a question about the conifuration....i'm a bit confused...but maybe later because i'm one lazy **** right now lol and I don't feel like typing, talking, moving as of right now

MY PE table starts ar around 1.24 and ends up around 1.10 - 1.09 around 6k-7k here with dense air and a 2.6, remember your results may vary and the best thing to do is put a wideband on your car and tune accordingly.

My PE Table starts at 1.30 and gradually moves up to 1.24 at around 6400.