LS1edit Q's adjusting MAF table and PE vs RPM
09-24-2009, 12:03 PM
#1
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LS1edit Q's adjusting MAF table and PE vs RPM PE first... Atap was reading 12.45 WOT on the stock O2's and 850 ish. I had a value of 1.1686 and adjusted it upto 1.1700 to make it rich. i should be around 12.0 AFR and 920 O2's right? Q #2 i am doing my whole MAF table with a % adjustment. so far from my last MAF (ported descreened 75 to 82 mm) to screened 85mm MAF i have had to multiply 60% to the whole table to get LTFTs from -26 down to -8... Should i try and get a stock 85mm table and go from there instead? or just keep fine tuning it as is?
09-24-2009, 02:40 PM
#2
Don't go by stock NB o2s, not reliable. You need a WB 02. I'd ditch your LS1edit and ATAP for HP Tuners.
If your tuning the combo in your sig you need better tools to get the job done right.
You need to set your PE table to 1.13 and tune your MAF for part throttle and WOT and then you need to tune the VE table 800 to 3000-4000 rpms to get within 2%.
If your tuning the combo in your sig you need better tools to get the job done right.
You need to set your PE table to 1.13 and tune your MAF for part throttle and WOT and then you need to tune the VE table 800 to 3000-4000 rpms to get within 2%.
09-24-2009, 04:23 PM
#4
Just to check, you're not tuning with the LTFTs on are you?
Why do you want to make it richer than 12.45? mid to high 12s is probably what's gonna make the best power for you.
If you're commanding 1.1686/~12.5 and it's giving 12.45, I'd say that you were pretty close on the MAF table in that area. Trying to tweak that anymore is likely going to over shoot and it's better to err on the rich side.
Why do you want to make it richer than 12.45? mid to high 12s is probably what's gonna make the best power for you.
If you're commanding 1.1686/~12.5 and it's giving 12.45, I'd say that you were pretty close on the MAF table in that area. Trying to tweak that anymore is likely going to over shoot and it's better to err on the rich side.
09-24-2009, 05:26 PM
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oh, ok i was thinking my grand prix was running 11.8 so i was kinda scared being at 12.45. i did change it to 1.1700 so i will have to see what happened.
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09-25-2009, 08:18 PM
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i would like to get it dynoed if i ever have the extra $$ to do so i will have to figure out my budget next week after i get my finacial aid figured out.
09-28-2009, 07:51 PM
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ran it last night my O2s were in the teens and 100s..then when i let off the gas they sit at 920s WTF...pulled some timing and moved the MAF back to rich again. I have 14.7_____ and it is reading 14.6 on Atap is this also normal do you know by chance?
10-04-2009, 09:31 AM
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ya, i dont have a wideband and wont have the $$ for one for about 8-9 more weeks! so i have to work with what i have. I actually unplugged the MAF cause my LTFTs were going all over the place and it is still -21 but the WOT looks better and the LTs arent going from -14 to + 11 anymore ...
Last edited by 2000ws6transam; 10-04-2009 at 09:42 AM.
10-04-2009, 09:53 AM
#15
A good WB unit is $300. I use the NGK AFX.
How can you tune your WOT AFR without a WB O2? NB 02's don't work for WOT.
If I were you, I'd stop driving the car and wait till you get a WB 02 and do it the right way. Without having a good scanner and guess on what the AFR should be, your taking a big risk on your 402 combo. You spent a lot of money now, don't go cheap on the tuning.
How can you tune your WOT AFR without a WB O2? NB 02's don't work for WOT.
If I were you, I'd stop driving the car and wait till you get a WB 02 and do it the right way. Without having a good scanner and guess on what the AFR should be, your taking a big risk on your 402 combo. You spent a lot of money now, don't go cheap on the tuning.
10-04-2009, 10:04 AM
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well, i have to drive to work...and to college. I can just stay away from the WOT. my main problem for tuning is the running so rich my NB O2s are going bad every 6 mo... i got a warrenty on the last couple so i was lucky there but now im moving 500 miles away so i dont have all the "hook ups" i do up here when i move.
The NBs will report different just based on the heat around them...
10-04-2009, 11:07 AM
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i keep the WOT around 940's that seems to be safe for me so far. Im not looking to race or get max HP just to drive it around and maybe hit a 1/8 mile street race lol. I need to save up and get a DD and make this my race car.
