I was reading up on DSM injectors in Hondas.. and I found this on Honda-tech.

Posted by Hondata:
DSM 450cc injectors will not work with the Honda ECU - the electrical characteristics of the injector are not suited to the ECU, resistor box or no resistor box.

If you use DSM 450cc injectors you will find the engine difficult to start, and the engine running lean at part thottle, plus tuning is very difficult.

http://honda-tech.com/zerothread?id=456616

It's been discussed on Honda-tech but no one could really answer why some people are having cold starting problems with DSMs, or how to resolve it. So I wanted to post it here to see if anyone has any info to resolve the cold starting issue or more info on this? Also how bad is it to crank your engine for ~3secs before it starts?? Post up if your car hesitates to start when it's cold or any other info you have.

 

i dunno about all of that stuff you mentioned.

but cranking your engine to try and start it for 3 seconds everytime you start it will probably wear on the starter. but maybe not who knows

 

mine does that ---- too. i just hit the thottle with a quick jab and it starts up fine...

 

Zero problems here.

I have the Honda injector driver data sheets, two sets of 450cc injectors, and OBD0/OBD1/OBD2 240cc injectors to play with, so I can figure out wtf is going on if one of the sets of DSM 450's is problematic. They are both blue tops, FWIW.

 

jeff move this topic.

 

aww man, the reason I posted in the FI forum was to get a broader exposure hehehe.

btw, I have blue top DSMs too, and cold starting really sucks now.

 

Very odd, I have used tons of sets of dsm injectors 380's/450s whatever.. No problems

 

I'm sure JD will get to the bottom of this.

 

I'm like molasses, brother, slow as nything but oh so rich

Gimme a few days to half a year, same as anything else I'm up to.

 

Ditto on my DSM injectors..