I have been running a set of DSM 450CC Injectors (blue top) for the last couple of weeks. I have been having issues with AFRs around my boost threshold at freeway speeds. (2500-3000RPM in 5th while cruising) I did not have this problem with my old 280ZX Turbo injectors.
No matter how low I edit my VE table, I cannot get my AFRs to go above approximately 10, however they will momentarily jump above 10 (maybe up 11 or 12, but, really all over the board). This makes the car "surge" (wanting to accelerate, then falling on its face momentarily)
Also, if I am accelerating hard through it, I will sometimes get backfires (I have been avoiding accelerating hard due to this reason)
Another thing, I posted this in the Injector thread, but it may possibly be related:
I have a question about the settings for the 450CC DSM injectors. I know what you state in the spread sheet, but there is some other information floating around for those injectors as well. Namely: http://forums.hybridz.org/showthread.php?p=562900
The part I am most interested in is that the other thread states the following:
PWM current limit % 100
PWM Time threshold (ms) 25.5
Which does not at all match the spread sheet. Which settings should I trust?
I am using the factory L28ET RRFPR still. Could this be causing issues by forcing more fuel in by momentarily jumping up the fuel pressure, and possibly dropping back down? Should I try to rectify the issue by capping off the vacuum reference ports for the RRFPR?
Thanks for any help I can provide some datalogs and numerous "testing" MSQ files as examples this afternoon. I just wanted to see if I could get some ideas during the day.