Chacko

Do eclipses actually have a resistor box or just work with less voltage?

45psi

your engine is obviously going to be cold in the morning. i bet all of you having problems with a stutering start dont let your fuel pump prime before cranking the ignition.

91AccordLX

Nope, I've tried letting my pump prime for 30+ secs or longer before and it still hesitated starting. and it's not just when it's cold, it's anytime the engine is off for more than like 5 mins.

Chacko

mine was firing up fine, even before the fuel pump upgrade... (after I found my battery to be bad)...

WhiteTeg24

The one thing you gotta remember is the DSM injectors are not stock Honda injectors. And the SMC is not of stock nature either. It's gonna give some of you problems. Did you get your injectors at a junkyard and just throw them in or were they cleaned/new? It's a budget-minded mod that I will be doing myself this weekend but I'm not planning on it being perfect. Just something to think about.

91AccordLX

My injectors were from the junkyard off a Talon with 41k miles so I just threw them in. Then I pulled them out and got them tested and was going to get them cleaned if needed. But they came back in excellent conditon at 450cc, 449cc, 448cc and 450cc. So I don't think it's because they're dirty. Resistance is 2.7 ohms all. Stock Honda Accord(should be the same for all Hondas) injectors are 1.5 to 2.5 ohms.

Chacko

hmmm I just started experiencing this... (the crank on the starter ----)
I wonder if its the AFC settings at idle that might be flooding the engine a little? I have mine at -25% at idle on both hi/lo throttle, and I'm using the 255 lph fuel pump...
It seems to start better if I don't let the sensor check go off in ACC (you can hear the pump starting its work) and just move straight to ignition.

DavidZC

No probs with my 450s here. Everything else is stock except for my Zdyne.

scarecrowX

i posted this on HT as well..

i remember a discussion i had with one of the powertrain guys on our FSAE team. he was talking about the fuel spray pattern and volume accuracy at different points in the injector's pulse cycle. basically, from what i gathered, the spray pattern is best when the injector is fully open, and loses accuracy/pattern when the injector is actually in the action of opening or closing. that's the idea behind peak and hold injectors- hit them with a surge of power to open them quicker, hold a lower current to keep them open for the pulsewidth, then close them. based on this, i would think that because the 450's are such a high flow rate, there would be a slight difference in open/close time due to larger orifice/heavier armature (aren't most high flow injectors low impedance peak and hold?). with pulsewidths as small as we have to run because of the fuel demands in vaccuum, maybe the lost accuracy due to longer open/close time is causing slightly off fuel delivery since the opening time, while running in saturated mode, consumes more of the actual pulse width than it would in peak/hold mode.... the problems seem to go away at longer pulsewidths, right?

maybe? just thinking out loud...

do the dsm's run them as peak and hold, or with the resistor box as saturated?