Here is how to upgrade fromt the LS2 style sensor to the LS7 card style sensor. I am going to assume you have it installed and need to dial in the VE and the MAF. Below is a spreadsheet with a formula I made up to make it super easy for new people to correct thier VE tables using Excel.
Here are some MAF values to get started, these should get ya pretty close. Please note the only mods I have are CAI, ported TB, and 3" exhaust w/o cats. If your mods are differant, obviously your MAF and VE tables will be off, but thats why I did this write up!! In addition to the pic at the bottom is the excel worksheet. It will be downloaded as a .zip file, but dont unzip it. Just change file extension to .xls and open in Excel.
MAF table LOW: 0.5208 0.5673 0.6180 0.6779 0.7854 0.8629 0.9487 1.0603 1.1564 1.2928 1.4520 1.6462 1.8674 2.1350 2.4213 2.7396 3.1199 3.5312 3.8660 4.2680 4.7113 5.1795 5.6879 6.2883 7.0055 7.8333 8.7809 9.7978 10.7930 11.7872 12.9456 14.1805 15.5695
MAF table HIGH: 15.5695 16.9749 18.4300 19.9108 21.4300 23.0493 24.6759 26.2767 28.0748 29.8440 31.6784 33.8237 36.1717 38.8379 41.6198 44.3760 47.1341 49.9399 52.7208 55.3415 57.8817 60.4353 62.7956 65.1476 67.0202 67.6537 67.7250 67.7250 67.7250 67.7250 67.7250 67.7250 67.7250
Before you get started, calibrate your wideband using the following link below!
Make sure you add the wideband PID to the histogram and the main table.
http://pcmforless.com/index.php?opt...d-correct-offset-and-scalar-for-widebands-in-hptuners&catid=34:tuning&Itemid=56
Then, set up a histogram to log VE AFR via wideband. Its one of the default ones that you can select by hitting the folder button on the histogram screen. What it does, is it will basically just log the AFR in all of the RPM vs MAP cells, so you will have a histogram table that have a bunch of values in the 13.x to 14.x range. Make sure your in open loop and disable all the stuff for tuning VE. I am also assuming you have your wideband installed and hooked up to HP Tuners pro. After logging as many cells as you can, copy that table into excel using the same headings of RPM and MAP. I have attached a picture so you can see how it works. Once it is in excel if there are a few cells you havent hit, hand blend them by looking at the cells all around it and entering a value that is similar to those around it.
After doing this you will then see the values calculated in the table below.
The worksheet formula has the capability to adjust for wideband error. AFTER you have calibrated your wideband as stated above, IF you are off by a tiny bit, mine was off by .2 to .4 so I used .3 you can change the worksheet formula to compensate for the error. NOTE that where you see the .3 in the formula in the cells on the bottom spreadsheet is where you use the average number your off by. If your off by more than .3-.4 go back and recalibrate the filter string by using the above link before continuing. Now if your wideband is 100% accurate, which I doubt, most are off, edit the formula and delete the .3 that is added to it.
EX: if your wideband reads 14.7 but the interface is giving the VCM editor
a value of 14.4, then your off by .3 In reality it will be scaled a bit,
my wideband read 12:4 & HPtuners saw 12.2, at 14.7 it saw 14.3, etc. So just find a close average where you drive the most. The closer you calibrate the wideband in HPtuners, the better the results of the spreadsheet and less times you have to use it. The reason why you may need a differant formula, is due to varying resistances in the wiring and lengths of wiring and or any resistance caused by differant contacts.
This is the formula in the worksheet that is used to compensate for wideband error (change the .3 to amount you are off)
=IF(B3>0,ABS((14.7/(B3+0.3))-2),"")
Notice where the 14.7 is in the formula, that is the air fuel ratio your tuning for. Notice the differant colors on the worksheet and how they relate to differant A/F values? Well you can copy and paste the formulas on the right where it says AFR formulas to the lower sheet. This way you can change your AFR in the VE table by RPM and MAP!! EX: when logging, you will use certain cells for highway driving more than in town. I have changed these to be leaner to get better milleage. You dont want to do that in the cells where your accelerating in the city, as peak torque is usualy in the 13.1 to 13.5 range. Feel free to play with the values and see how much MPG you can gain. I have seen as much as 3-5mpg gain on the hwy and 2-3 in the city. In the city I actualy richened up slightly some cells, but to each thier own. Adding timing helped me out too, its not just all A/F to get best milleage. Notice how in the higher map values on the spreadsheet I changed the formula, scaling more and more towards a PE value. The reason for this is if your MAF fails, your VE values will still be accurate. If you dont want to scale the values that way, just change all the values to 14.7
Now what to do with the numbers in the spread sheet. Since the formula converts the negative trims to positive, all you have to do is do a paste special, multiply by the % for the entire spreadsheet. It will either add or subtract from your VE table accordingly. Dont forget to smooth!! Only smooth once. You should only have to do this a couple times to get it dialed in. This makes VE tuning a breeze. Note this is for vehicles with VE tables.
I have included some AFR ratios in the attached pic to show how it works. Also included are some pics of my stock VE table, the one I got from Brandon (FAST), and the one I did with the new LS7 sensor. All I can say is WOW, what a differance that LS7 sensor makes as far as resolution and smoothness. The VE table pic is a work of art!!
Also you will need to calibrate your IAT. What I did was start up the engine after sitting all night <<<< IMPORTANT, I looked @ the outside air temp, then the IAT. You would not believe how far these things are off. Mine was off almost 27% !!!!!!!!!!!!
EX: outside air temp 55, and IAT was 76
First you find out the % it was off by, take 55/76 to convert to %. In my case, it was off by a value of 26.73%. So you highlight the whole table and multiply by .7237 (the inverse of amount off) Then your IAT will read the correct temperature. Remember, you can only do this first thing in the morning as the fan wash will throw off the IAT by causing the intake to suck in the warmer air being heated as moves through the radiator and gets blown towards the air filter.
Now that you are done with the VE, you can scale the MAF, for instructions, go here...
http://www.tbssowners.com/forums/showthread.php?p=1194422#post1194422
Here are some MAF values to get started, these should get ya pretty close. Please note the only mods I have are CAI, ported TB, and 3" exhaust w/o cats. If your mods are differant, obviously your MAF and VE tables will be off, but thats why I did this write up!! In addition to the pic at the bottom is the excel worksheet. It will be downloaded as a .zip file, but dont unzip it. Just change file extension to .xls and open in Excel.
MAF table LOW: 0.5208 0.5673 0.6180 0.6779 0.7854 0.8629 0.9487 1.0603 1.1564 1.2928 1.4520 1.6462 1.8674 2.1350 2.4213 2.7396 3.1199 3.5312 3.8660 4.2680 4.7113 5.1795 5.6879 6.2883 7.0055 7.8333 8.7809 9.7978 10.7930 11.7872 12.9456 14.1805 15.5695
MAF table HIGH: 15.5695 16.9749 18.4300 19.9108 21.4300 23.0493 24.6759 26.2767 28.0748 29.8440 31.6784 33.8237 36.1717 38.8379 41.6198 44.3760 47.1341 49.9399 52.7208 55.3415 57.8817 60.4353 62.7956 65.1476 67.0202 67.6537 67.7250 67.7250 67.7250 67.7250 67.7250 67.7250 67.7250
Before you get started, calibrate your wideband using the following link below!
Make sure you add the wideband PID to the histogram and the main table.
http://pcmforless.com/index.php?opt...d-correct-offset-and-scalar-for-widebands-in-hptuners&catid=34:tuning&Itemid=56
Then, set up a histogram to log VE AFR via wideband. Its one of the default ones that you can select by hitting the folder button on the histogram screen. What it does, is it will basically just log the AFR in all of the RPM vs MAP cells, so you will have a histogram table that have a bunch of values in the 13.x to 14.x range. Make sure your in open loop and disable all the stuff for tuning VE. I am also assuming you have your wideband installed and hooked up to HP Tuners pro. After logging as many cells as you can, copy that table into excel using the same headings of RPM and MAP. I have attached a picture so you can see how it works. Once it is in excel if there are a few cells you havent hit, hand blend them by looking at the cells all around it and entering a value that is similar to those around it.
After doing this you will then see the values calculated in the table below.
The worksheet formula has the capability to adjust for wideband error. AFTER you have calibrated your wideband as stated above, IF you are off by a tiny bit, mine was off by .2 to .4 so I used .3 you can change the worksheet formula to compensate for the error. NOTE that where you see the .3 in the formula in the cells on the bottom spreadsheet is where you use the average number your off by. If your off by more than .3-.4 go back and recalibrate the filter string by using the above link before continuing. Now if your wideband is 100% accurate, which I doubt, most are off, edit the formula and delete the .3 that is added to it.
EX: if your wideband reads 14.7 but the interface is giving the VCM editor
a value of 14.4, then your off by .3 In reality it will be scaled a bit,
my wideband read 12:4 & HPtuners saw 12.2, at 14.7 it saw 14.3, etc. So just find a close average where you drive the most. The closer you calibrate the wideband in HPtuners, the better the results of the spreadsheet and less times you have to use it. The reason why you may need a differant formula, is due to varying resistances in the wiring and lengths of wiring and or any resistance caused by differant contacts.
This is the formula in the worksheet that is used to compensate for wideband error (change the .3 to amount you are off)
=IF(B3>0,ABS((14.7/(B3+0.3))-2),"")
Notice where the 14.7 is in the formula, that is the air fuel ratio your tuning for. Notice the differant colors on the worksheet and how they relate to differant A/F values? Well you can copy and paste the formulas on the right where it says AFR formulas to the lower sheet. This way you can change your AFR in the VE table by RPM and MAP!! EX: when logging, you will use certain cells for highway driving more than in town. I have changed these to be leaner to get better milleage. You dont want to do that in the cells where your accelerating in the city, as peak torque is usualy in the 13.1 to 13.5 range. Feel free to play with the values and see how much MPG you can gain. I have seen as much as 3-5mpg gain on the hwy and 2-3 in the city. In the city I actualy richened up slightly some cells, but to each thier own. Adding timing helped me out too, its not just all A/F to get best milleage. Notice how in the higher map values on the spreadsheet I changed the formula, scaling more and more towards a PE value. The reason for this is if your MAF fails, your VE values will still be accurate. If you dont want to scale the values that way, just change all the values to 14.7
Now what to do with the numbers in the spread sheet. Since the formula converts the negative trims to positive, all you have to do is do a paste special, multiply by the % for the entire spreadsheet. It will either add or subtract from your VE table accordingly. Dont forget to smooth!! Only smooth once. You should only have to do this a couple times to get it dialed in. This makes VE tuning a breeze. Note this is for vehicles with VE tables.
I have included some AFR ratios in the attached pic to show how it works. Also included are some pics of my stock VE table, the one I got from Brandon (FAST), and the one I did with the new LS7 sensor. All I can say is WOW, what a differance that LS7 sensor makes as far as resolution and smoothness. The VE table pic is a work of art!!
Also you will need to calibrate your IAT. What I did was start up the engine after sitting all night <<<< IMPORTANT, I looked @ the outside air temp, then the IAT. You would not believe how far these things are off. Mine was off almost 27% !!!!!!!!!!!!
EX: outside air temp 55, and IAT was 76
First you find out the % it was off by, take 55/76 to convert to %. In my case, it was off by a value of 26.73%. So you highlight the whole table and multiply by .7237 (the inverse of amount off) Then your IAT will read the correct temperature. Remember, you can only do this first thing in the morning as the fan wash will throw off the IAT by causing the intake to suck in the warmer air being heated as moves through the radiator and gets blown towards the air filter.
Now that you are done with the VE, you can scale the MAF, for instructions, go here...
http://www.tbssowners.com/forums/showthread.php?p=1194422#post1194422
Just wanted to help anyone else that might be converting to the LS7 MAF as there wasnt allot of info out there to go by. And ya having a VE table is nice...... 
