Thread: b14 370cc Injector K Value, Scaling, Latency? XDF?

I can barely get my car to even hold an idle, let alone rev up. I am wondering if it has to do with the XDF file or if it is my injector constants?

I am really confused by the different bins floating around. I have several different 370cc 4bar bins that I people have emailed me, and all of them seem to use different values for the K value, scaling constant, and latency.

For example, Calums base tune that Vadim posted (I also found the same bin on the old forum posted by calum) has some crazy values, IIRC, K value = 399, scaling const = 419.3, Latency = 0.75.

Other programs have stuff like: 207, 550.38, 0.59... Whats up with that? I know I could build a setup with a knock sensor to test latency, but that seems like a lot of work and money for something that should already be figured out.

I have read different latencies for 370s around the web, does this depend on which 370s I am using? I am pretty sure I have the yellow ones from a 300zx.

I don't even want to stick my wideband into the exhaust since there is raw liquid fuel coming out the tailpipe.

Here is a video of the idle and a quick rev, it doesn't seem to be able to go past 4k rpm at all, but I didn't want to push it either

here is a you tube version:

http://www.youtube.com/watch?v=4d-hCXNKuRo

Have you used this ECU and daughterboard combination in a car before this?

no, just bought it recently.

I think I found the problem though, either bad Z32 MAF or Bad grounds on the MAF.

The ECU is reading 4.92 volts with just the key turned on. Finally got conzult to work with my calum. I can't believe the car even starts up at all.

Maybe check the wiring, mafs will read full scale if wired up wrong.

This is fixed now right? http://www.sr20-forum.com/tuning/40507-calum-r-t-noobness-3.html#post534968

Yes sir, thanks everyone for all the help. I suppose you can close both threads.