Hi guys, I've done some searching and reading so have some idea of what's going on but there's results i'm a little unsure of. Car is basically stock apart from rebuilt turbos running stock boost as far i'm aware(will get an aftermarket gauge to confirm). Usual maintenance, had seals, rings gaskets replaced same time as the turbos were getting done. Borrowed a diagnostic computer on Saturday (X431 Diag as on the little slip it prints out), as i don't have ECUTALK/conzult yet to check things at idle and then did a few pulls as i wanted to check injector duty cycle etc. It didn't produce the DC as a % rather as Inj pulse width and i've found some calculations(inj pulse*rpm/1200) to convert and i'm getting ~ 90%, putting my foot to the floor in 2 at the 5-6k rpm. Noticed the TPS was incorrect at idle and i sorted that out, autobox shifts much better now. From the bits of searching i've done the TPS will be used when calculating the load/fuel/igntion timing. I'm still learning bout this all this but in layman's terms, what would have been the effect of my tps being set higher than the .45V, would this account for pulsewidths/IDC being so high, higher fuel consumption too? And to complicate this further would the figures have taken into account the injector latency? Here are the figures let me know your thoughts, thanks in advance. RPM | MAF(V) | O2-O2(V) | TPS(V) | Inj Pulse(ms) | Timing 750 | 1.17 |0.3-0.3 | 0.70 |2.4 | 15 4950 |4.20 |0.58-0.81 |4.18 |19.0 |21 5000 | 4.18 |0.59-0.87 |4.06 |18.9 |22 6075 | 4.34 |0.72-0.95 |4.34 |18.1 |19
Divide by two. You worked out your duty cycle wrong. the inject fires every second revolution. so it is closer to 45-50% DC.
