well i mad a few pulls today with the lm-1 hooked up and heres what i got
cruising around town without boost i get a 14.3-14.8 with light to acceleration(good)decel i go like 18.1+(prolly due to the to atmmospher bov on the maf system)under meduim accel with boost(7-9psi) im running 12.5-13.0(problem????)
and at wot im readin 10.9-11.5
now at wot should i shoot for the 10.5 mark or is 11.5 safe enough of an afr
im boosting to 19psi

if need be i can upload my lm-1 logs so u guys can take a better look

 

I shoot for an a/f ratio around 11.6-11.7 wot and around 12.0 for part throttle power enrichment(my usual target a/f settings are 11.6 wot/12.0 pt). I also run 19psi and 93 octane gas. I always shoot for mid to upper 11:1 a/f even when running higher boost with racegas, have even been 12.0 at 25psi on some 10.70 runs last year with no issues. Each car is different though but as long as it's not detonating it should be ok.

HTH

 

I tend to agree with HTH but I'd like to know your total timing also under all these conditions. There may be room to "squeeze" a little more power by tweaking the timing, not the A/F ratio.

The key to more power is in the timing. A/F ratios are only "ballpark" figures. In other words, you probably won't notice any performance difference in, say, a 11.8 vs. an 12.0 A/F ratio whereas one degree of timing can make a difference.

 

i have 9* base timming instead of the stock 12* and the stock advance curve.im still running on the stock 89 maf ecm(tunning with injectors/fmu).so total advance is whatever stock is -3*.i havent had any problmes with detonation.and im not pulling any timming with the msd btm.when i start to spray on the motor im going to set the msd to pull 3* per pound of boost.with a total of 15* retard + the -3* i have out of the base timming

 

True timing can make a big difference, I'd like to know where your total timing ends up also and see how it compares to mine. My timing curve scales down as mph goes up, starting at 21.1* to 35mph(1-2 shift)then 19.0* till 61mph(2-3 shift) then 17.9* the rest of the way.

I've never played with timing on my car except to work with spooling the turbo.

 

ill have to fire up tunerpro and take a look at the timming tables.just have to see if i can find the right bin again

 

http://i76.photobucket.com/albums/j3...des2k3/afr.gif < full size image

 

heres another run
on the end were it says shut off early i actually was starting to get out of the throttle
http://i76.photobucket.com/albums/j3...es2k3/afr2.gif

 

this one is all part throttle stop and go in traffic with 0 boost

http://i76.photobucket.com/albums/j3...es2k3/afr3.gif

 

Well… I guess I’ll have to be the one that disagrees… sure, there is power to be found in timing, but there is also power to be find in a/f ratios. The fact is that you should find more HP in most combinations by leaning out till somewhere in the 12.5 to 13.5 range assuming that there isn’t another problem that is limiting power before that… usually detonation/detonation sensitivity.