LuckyX2
03-29-2013, 10:59 AM
Currently my engine is tuned using VE with MAP load sensing for both fuel and ingnition on a Haltech PS1000. However, I'm going to be installing GTi-R ITBs soon and will be making the switch to VE tuning with TPS load sensing for fuel and MAP load sensing for ignition.
My question is how well will my old pressure based fuel map carry over to TPS? If I take the column corresponding to max boost, set that to 100% throttle, set the idle vac column to 0% throttle and linearize the TPS axis values inbetween, how close will the map be? Basically I'd just be scaling my map axis from -20mmHg/20psi to 0%/100% throttle and keeping all the VE values the same. Will that be good enough to drive and then fine tune from there? Keep in mind that because I'm tuning with VE it will automatically make adjustments for pressure so I only need the TPS table, not TPS with MAP correction.
Thanks!
My question is how well will my old pressure based fuel map carry over to TPS? If I take the column corresponding to max boost, set that to 100% throttle, set the idle vac column to 0% throttle and linearize the TPS axis values inbetween, how close will the map be? Basically I'd just be scaling my map axis from -20mmHg/20psi to 0%/100% throttle and keeping all the VE values the same. Will that be good enough to drive and then fine tune from there? Keep in mind that because I'm tuning with VE it will automatically make adjustments for pressure so I only need the TPS table, not TPS with MAP correction.
Thanks!