Prime Pulse
Posted: Tue May 24, 2022 11:38 am
Hello. On a US R18 turbo, we are using 1050 ID injectors. Everything works perfect with engine breaking the 400whp mark (forged R20) but we have a problem with hot starting. No matter what crank fueling settings I have tried, engine starts very hard when hot. COld starts are excellent with typical scaling (from 180cc to 1050cc injectors, no other changes). I really can't figure out why this is happening and I have come down to perhaps the reason being an initial prime pulse when ECU first sees RPM to wet the walls which is not scaled by hondata software. Any ideas? I do not think that prime pulse (if any) is shown in logs.
As another note, car was initially tuned to 270whp with 520cc injectors and everything worked perfectly. Hot starting problem arised when injectors were switched to 1050IDx.
As another note, car was initially tuned to 270whp with 520cc injectors and everything worked perfectly. Hot starting problem arised when injectors were switched to 1050IDx.