I just spent the evening wiring up my resistor box and installing my dsm 450cc injectors that I just got back from being cleaned. I decided to start the car to see what happened and it was a little rough but in a couple seconds it was perfectly smooth and revved fine. Took it around the block and down the road and it's actually a hair on the lean side, since I turned the fuel pressure way down! Ran the car hard and it runs better than before! Can the computer usually compensate for that much fuel?
My set-up includes:
DSM 450cc injectors
Honda Resistor Box
B&M FPR

 

My car did the same thing, but I was running 20psi of fuel pressure.

art

 

The B&M goes from 25-60psi, if I'm not mistaken, and mine is turned in a turn or so, which shoulpd be around 30psi...

 

so is the car NA for the time being? Since the turbo is in the garage?
Just turn the FP way down?

 

My turbo is on the workbench right now It should be installed in the next few days (or in a week, if I can't get a good deal on a mandrel bent downpipe/o2 housing in town...) Right now my fuel pressure is around 30psi (I'm guessing) and it's running a little lean at WOT...about .78 volts from the O2 sensor...

 

You're adjusting your fuel pressure with no gauge?!

Sonny

 

umm...yeah? It only adjusts from 25-60...not gonna mess anything up with that.

 

Well, my car is smarter that I am...I hacked into the MAP sensor wires and put in a little circuit I've been thinkin about to try and scale the MAP output to lower the injector duty cycle and it seemed to work great for a few mins at idle. I could see the a/f meter going up and down with my adjustmend and see the idle change, but when I took it out it had a bad hesitation around 3k-3.5k in first gear only, really. And that was only at WOT. it idled kinda rough for a while, then it friggin bogged at a traffic light and took me a couple tries to get it started. I guess it was flooded with fuel...since I could only get it to start with the throttle pedal to the floor...I got a CEL, but have tweaked the ***** and all the symptoms have gone away accept that the car revs down really slow. you rev it up and it's fine, but it drops down real slow...any thoughts???

Sorry for the long post; car is bogged with 450cc's NA when I modded the MAP signal and now the revs drop very slowly when you take your foot off the gas...