Best tuning mods for a stock car
12-26-2010, 12:20 PM
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Best tuning mods for a stock car I just got HP Tuners. I have been tuning ODB1 stuff for a while now and i am pretty familer with Tunerpro RT. I have been playing with HPT for a few days just looking threw all the tables. The car is a 99 SS 6 speed. I am going to disable the skip shift, EGR, air pump, back 02 sensors to get ready for headers. Also changing for 3.73 gears. Other than that what else is good to do in the tune do get some more HP out of a stock LS1.
It is an SS and has the SLP air box and MAF.
It is an SS and has the SLP air box and MAF.
01-01-2011, 04:13 AM
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Thats pretty much what I have been doing. I did all the above plus added a few degrees of timing. Made PE or WOT a little richer. The car seems to run better, I need to log it still.
01-01-2011, 02:20 PM
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I agree, I hate when people fudge p.e. instead of calibrating the maf. Sure it needs to be setup to command the desired afr, but you shouldn't have to command 11.1 to see 13.1
01-01-2011, 03:15 PM
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nobody said to rape the PE table or to not tune the maf. I just said make sure your trims are at O. If he doesn't know that it requires a maf tune to accomplish that then he shouldn't be touching the fuel/ spark tables.
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01-01-2011, 08:58 PM
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Just learning the software. I am new to ODB2 stuff with MAF. I am going to instal my Innovate LM 1 before screwing around to much. Dont want the car to run lean. I need to go ahead and get my headers and y pipe so I can weld in an extra bung.
01-01-2011, 09:12 PM
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Ok, so I need to tune the MAF, the car has the SLP MAF in it and from what I am reading it has a resistor in it to fool the computer. Should I use this MAF or disable the resistor? I am sure this has all been gone over before. I havent read therw all the sticky's yet.
01-01-2011, 10:02 PM
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I'd personally rather run the stock maf but if yours works fine I guess it's ok
Frost is refering to the scale the maf uses during WOT, usually between 6000-11000 hertz. Many cars come with that flat spot up top, some don't I don't know why it's there. Most likely you won't see that high of a freq anyway but I still like to match it to the rest of the curve.
From the sound of it you might wanna do some research on tuning the maf before you embark on your journey.
Frost is refering to the scale the maf uses during WOT, usually between 6000-11000 hertz. Many cars come with that flat spot up top, some don't I don't know why it's there. Most likely you won't see that high of a freq anyway but I still like to match it to the rest of the curve.
From the sound of it you might wanna do some research on tuning the maf before you embark on your journey.
01-01-2011, 10:12 PM
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I'd personally rather run the stock maf but if yours works fine I guess it's ok
Frost is refering to the scale the maf uses during WOT, usually between 6000-11000 hertz. Many cars come with that flat spot up top, some don't I don't know why it's there. Most likely you won't see that high of a freq anyway but I still like to match it to the rest of the curve.
From the sound of it you might wanna do some research on tuning the maf before you embark on your journey.
Frost is refering to the scale the maf uses during WOT, usually between 6000-11000 hertz. Many cars come with that flat spot up top, some don't I don't know why it's there. Most likely you won't see that high of a freq anyway but I still like to match it to the rest of the curve.
From the sound of it you might wanna do some research on tuning the maf before you embark on your journey.
I am reading the tuning sticky's as we speak...
01-01-2011, 10:24 PM
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Also if the MAF is descreened it can throw the maf table off a good bit more. Log some commanded vs actual afr once you get your wideband in and you'll nail it down pretty quick.
01-01-2011, 10:27 PM
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yeah, in a nutshell you basically want to adjust the maf by the percent the fuel trim is off, when you put an airbox on the error in the maf curve isn't going to be the same through out the entire curve, usually the % error gets worse as the freq increases. I've successfully tuned the top end of the maf using the narrow band and stft's and pulling about 10-15 degrees of timing. Many people will avoid doing this and I wouldn't recommend it unless you know what you are doing. BTW, this only works on an N/A engine.
If you plan on using a wideband, I'd recommend running open loop and setting the a/f ratio at 13.0:1 across the board and tuning the maf by the percent error in the actual vs command. That way you tune the entire curve in one shot...ideally.
Ok I'm done rambling.
If you plan on using a wideband, I'd recommend running open loop and setting the a/f ratio at 13.0:1 across the board and tuning the maf by the percent error in the actual vs command. That way you tune the entire curve in one shot...ideally.
Ok I'm done rambling.
