I have been logging my new tune and discovered that the injector timing is maxing out. I am running 18-19 psi of boost with 252cc injectors. Question is, is it time to upgrade injectors? If so where would you make the changes in the tune for larger injectors. Overall Plan is around 250-300hp on my K04.

Check out Nyet's signature for free ECUxPlot software. You can make graphs from your csv file. Its easy to use and you see whats going on clearly

Have been doing some more research of the injector pulse. I guess it's just a limit of this box? By upgrading injectors and maf I think that it will keep it from maxing out. Am I way off here? Based off a lot of people's tunes for the AEB NDBW a vr6 maf and 440 injectors seems the norm. With that setup I see guys have normally around 220-250hp with 250-300 tq. Which would totally be fine with me until until I want to upgrade again.

Some comments on that old ECUs is that you don't see IDC (injector duty cycle) just injector pulse width in ms (miliseconds).

Other thing I have seen with that old ECUs is that 16.32ms is some kind of ECU datalogging max to show you through KW1281 protocol. It is like a limit not max injector duty cycle. People please correct me if I am wrong. That is what I have saw from my experience and readings.

sorry. Good to know.

Not easily but I think it's been done with WMI, different exhaust manifold, injectors, etc.

~270/280 is the max really I believe.

I agree, I think its time to pull the cat delete pipe and weld in a bung for a wideband. Maybe remove the spacer on the second O2 and delete it in programing then install it there. Maybe to far away from the turbo? Ill have to see what the recommend distance for the LM2 is.

I know 300 is asking a lot from a K04 but we can all dream like I said 250-300 would be the goal.


Water/Meth would be fun.