Need help, I'm updating to the 2bar OS and the VE table is automatically populated from my old tune into the 2bar os but the map pressure and VE #s do not match up with my old tune correctly due to the axis values being different increments 10 instead of 5. So do I trust the automatically transferred values or do I need to copy every row of values at the 10 increments and copy and paste to the corresponding rows in the 2bar tune and then copy the 105kpa row on the old tune and put it in the 210kpa value of the 2bar and multiply by 1.25 and interpolate between verticle bounds?

 

Copy row by row of the old table into the new table and then extrapolate accordingly into the new unpopulated area. 1.25 won't necessarily work...you'll need to increase the values gradually and in line with the rate at which they increased in the 0-105kpa section of the table. This is all just an estimation, as the boost section of the VE will need actual calibration.

 

thanks smokeshow, another question can I use the iat from the maf ro do I have to put a gm open loop iat in the intake charge pipe? if so how do you cancel out the maf?

 

You can do either (IAT sensor), but generally people install a new sensor and get rid of the MAF all together. You set the dynamic rpm limit (or something like that), to its highest value and zero out the maf table for good measure to fail the maf.

As jake said, copy the rows you have and interpolate between. To fill the rest of the table extrapolate from the first half. Start working into higher pressures slowly so you aren't in a bad spot under a lot of power. You should see a pattern develop pretty quickly.

 

do I zero out the maf calibration table? dynamic rpm limit?