As an AVID 450CC DSM injector user, I had soooo many problems with them.
I had such a hard time starting the car i thought it wasd the SMC when I first bought it. The car runs smooth once it works, otherwise it was a killer to start.

I would like to know if someone knows the difference between injector placement of a DSM versus Hondas. Maybe like someone said previously, the heat on the injectors are affecting their behaviour on how they work.

I've check resistances on my injectors and they read 2.5 ohms a piece. RC injectors read 16 ohms. My Resistor box read 8 OHMS.

Tuning may also be the key, but I've also found that lengthy idle cool down periods affect the DSM behaviour also. I could never start my car up after a 1 minute or greater idle. I would have to drive the car slowly when I got close to my desitnation to cool it down, then idle for less than 39 seconds. My car would start up properly wth the DSM injectors all the time after that trick.

Everyone I know that uses the 450cc injectors have had nothing but problems with hard starting. They'd go back to the RC and have had flawless startups.

I believe hondata claim with the 450cc injectors is to protect their trademark.

What would you do if you installed a hondata for the first time with the DSM injectors and your car didn't start? You'd blame the Hondata right up, just like how I blamed the SMC without a second thought.

After thinking about my situation and two ECU's later, i realized that the DSM injectors may actually be the culprit. When my friends changed their Injectors and had success, i finally decided that hte injectors were the problem.

however for the past two months i have had success with the injectors only because I don't let the car idle for very long.

I don't have the proper tools to measure manifold heat at certain points in time nor do I have a DSM to compare these measurements with.

Remember that the people who are having problems will have the loudest voice and I believe that hondata is just trying to protect themselves from people buying DSM injectors and having problems.

I have been telling people for weeks that I no longer recommend DSM injectors.
I've had two sets, cleaned, balanced, from Mike Palm that just didnt work. I'm positive thats no fault of his however. I've had 3 other sets, also cleaned and balanced, but by RC, that gave me headaches. These headaches range from hard starting when hot, inconsistant high rpm fueling, and idling properties that can only be described as "funky".

In all cases, swapping these injectors with RC's fixed the problem. The only difference I found between them is the impedance levels. RC's are around 2.3 ohms, while the dsm's varied from 2.5 to 3.2 ohms of resistance.

Since I'm no electrical or mechanical engineer, I can't give you any highly technical responses as to why they don't work. But check out this reasoning, kinda laughed at it: Most of us don't regard Mitsubishi cars as reliable, so why would we use their parts and expect otherwise?

Food for thought.