11-27-2007, 03:56 PM #1
Cheapest way to run rude/b-kit with stock ecu
What's the cheapest way? is 50# injectors + a fuel pressure regulator possible? or is the rude fuel controller necessary?
11-27-2007, 04:05 PM #2
You can't just put 50# injectors on without a fuel controller as it would be way rich thru the bottom end and midrange.
I suspect that all you would have to do is install the rising rate fuel pressure regulator and even run it with the stock injectors. You would have to measure the AFR to confirm this though.
11-27-2007, 04:06 PM #3
.... you know, an old phone conversation i had with Les about 2 years ago comes to mind. If i remember correctly he said all that was needed to run his B kit was his rising rate reg. and stock injectors.
I still advise anyone that tries this to measure the AFR.
11-27-2007, 04:07 PM #4
I knew that just 50#'ers isn't enough, but wasn't sure if the rude controller is the only option.
Do you have a link or contact to someone who lends or sells a A/F setup?
11-27-2007, 04:16 PM #5
11-27-2007, 04:26 PM #6
wouldnt the rude controller be able to tune the a/f ratio better than the rising fpr would ?
11-27-2007, 07:58 PM #7
- Join Date
- Apr 2005
you can run the rising rate fuel regulator with stock injectors ( 38 lb) and Ruds/ B-Kit. 100% you need nothing else
the most important thing is to set the static fuel pressure befor you start your engine.
best to install a 2 nd fuel gauge to check the reading on the static fuel pressure ( fuel pump is on engine is Off )
the orginal fuel gauge that comes with the regulator is sometimes a bit Off
you can also run the B-Kit on a complete stock setup if you still running the stock air intake, ( you dont need a fuel pressure regulator )
but if you want to get the full potential, you go with a 4 inch or rear air Intake setup and the fuel pressure regulator.
that combination is testet world wide at least on 50 setups so we dont need to start a discussion about lean or rich at this point.
but like Jerry says, you should allways try to check the A/F on your setup and the riding condition you are running.
the stock ECU will rich up the A/F so it helps allmost in every condition
11-27-2007, 09:34 PM #8
The mods I have that affect A/F are an external intercooler and riva rear air intake so I would definitely need the fuel pressure reg.
Is the regulator in the online store the one thing I need?
What gauge do you recommend since the original one seems to be off?
What pressure should the regulator be set at for the B-kit, stock 38s, rear air and external IC?
Who welds or knows someone who welds the bung into the j-pipe for the A/F readings?
Thanks for sharing Malte and thanks Jerry for the info as well!
11-27-2007, 09:50 PM #9
Fizzle, all you need is the rising rate fuel pressure regulator.
You always set the regulator at 60 PSI with the lanyard first plugged in (the fuel pump runs for 2 seconds)
The stock gauge on the regulator is fine.
Nils can weld the bung in the J pipe.
11-27-2007, 09:51 PM #10
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