Quote:
Originally Posted by Drweldin
Not sure why you would set the mainscale so rich...I have my mainscale at -36 with 560cc injectors....which is exactly what you would expect doing the correction math....from there I just fine tune by rpm, but you can also fine tune with "MAF" load, which I have experimented with a little, but with no way to log MAF load, have decided to just tune AFC style by rpm,....I can def. see the advantage to logging MAF load, because then youd have a truer sense of where to tune....I generally end up fatting up fuel at the mid-range (2800-4200 area)...but not by much, maybe - 3 or so %...I let the LC-1 control WOT with the AF correction feature. I have not got that portion dialed in perfect yet, but it works pretty well.....if you use it, there is a gain adjust ment, as well as min/max correction factors that def. come into play....I found I had to turn the gain up to around 10 or so, and turn my max "lean" correction up to about 8-10% also to get it to lean out enough, and consistantly...thats what Im still working on, as I am still a little rich WOT...I also have timing control via Apex ITC (something everyone should consider - timing control that is...) I def. use the ITC too...
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thanks for the help man.. I went out and worked a little more with it, I actually ran through the Turbo Buick setup document on fullthrottletech just to get an understanding of some of the base features. Right now I have my mid and high load rpms set just about perfect
Im starting to catch on! I have an older techedge WB, my display doesn't have the 2nd output that I could connect to the GenII unfortunately, so I wont be able to utilize the AF tracking just yet, I think Im going to get a DB9 cable to connect the module to the GenII, or I may order a newer display that has the extra DB9 cable to do such a thing.. As of now, I have my mid and high load rpm tunes set to around -7.5 to -10 or so respectively. As much as I tinkered with the low rpm tune, I was unable to get the mixture to richen at all, running around 16-17afr at idle (600-700rpm) I set the low tune rpm around 400 and dialed both + and - upwards of about -20 to +20 with no results.. did the same at 800 rpm.. out on the road its pretty much perfect at WOT (around 11-12 afr at WOT @18psi) And once the car is warmed up (ie, when I come back from making a run) It "feels" like its idling just fine... but still has the lean afr.. so not sure where to go with that.. still havent really messed with anything other than the mainscale, and high,mid,low tunes.. as everything else still throws ??? above my head..
btw.. like I said im new to tuning and AFR and stuff... how do you actually calculate the mainscale for 450s?