hexdmy 2 Report post Posted January 8, 2017 I've noticed on some of the cars that I've tuned with G4's that it would be good to have both accel fueling strategies available at the same time. Primarily I use tps based accel fueling, but on some turbo engines, you can get a bit of leaness when the turbo spools, and tuning with map based accel fueling alone is not much of an option on engines with decent sized cams. Quote Share this post Link to post Share on other sites
hexdmy 2 Report post Posted November 10 Bumping this topic... I'm surprised no one else has interest in this. OEM systems I have worked with do this, and it makes sense. At low throttle openings, a change of throttle angle is a better trigger for transient fueling than map for engines that have low / noisy idle vacuum. However, at steady throttle angles, on a turbo engine, as the boost builds, there can be a need for additional fueling, otherwise you get a lean spike. I've noticed this when tuning steady state and then doing transient sweeps, if you tune to the sweep, you get a inverse V in your fuel map. Certainly this is not reinventing the wheel, just doing what the OEM's have already been doing for many years, and for good reason. 2 Davidv and mapper reacted to this Quote Share this post Link to post Share on other sites
Davidv 68 Report post Posted November 26 Or an X-Tau option would be super cool too. Quote Share this post Link to post Share on other sites
mapper 55 Report post Posted December 2 Yes thats a good suggestion. Even better would be a propper fuel film modell or at least some kind of short and long term acceleration enrichment. Quote Share this post Link to post Share on other sites
