You probably spoke to Ken. Ken's a great IDI enthusiast, and someone I have personally met, and rode in his hopped up IDI, which at the time was running on 7 cylinders, because they burned up a piston at a tractor pull earlier that week. I also used to be a customer of Ken's, and had one of his DPS pumps, and also a set of DPS Stage 1 injectors. I'm not going to say anything bad about Ken or DPS. There is plenty of that already said by others that you can read for yourself. I'm only going to relate to you my personal experience and observations. In my view, there are 3 issues with DPS stuff.
1) - Product consistency
2) - Product availability
3) - After the sale support
With regard to #1, let me tell you about the DPS injectors I bought. I ordered a set, and so did PAFixitMan (Joe Lewis), at the same time. We both got brand new Delphi injectors, that had DPS engraved on them, and were obviously modified. The pintle on a DPS injector does not look "right". I installed mine, and noticed right away, a difference to the sound of the idle. Otherwise, they ran OK, althought there was a lot of smoke. Then I went and helped Joe install his. We pop tested them, and saw the spray pattern was non-existent. They *** and **** all over the place, but true to what Ken had told me, this was to be expected. So as long as the pop presure was good they were assumed to be OK. Joe then went and helped another fellow install his. I forget exactly who it was. He called me and said "Mel, that guys injectors didn't look anything like ours did. It looked like Ken just spray painted them black, and stuck them in the box." That's all I'm going to say on that matter.
As for #2, ask anyone who has ordered stuff from DPS, and you will find out that product delivery is spotty. OK, granted that can happen to anyone. so no big deal there.
#3 however, is why I got into the business of providing performance pumps and injectors to this community. In addition to the DPS injectors, I had a DPS pump. It had a problem from day 1, that Ken never addressed. At 1400 RPM, it would begin to go into oscilations that would drive you crazy. It was also my cruising speed, so this was a particularly harsh problem for me. Since Ken wouldn't deal with it, I spent my money and took the pump to somebody who could. That act became the genesis for my Moose Products. So you see, Ken is responsible directly for his current competition. If it wasn't for his legendary lack of customer service, he wouldn't have any.
About the injector design - You have already heard Ken's philosophy, that because the engine is an IDI, you don't need a spray pattern. This is B.S. in the most massive and misguided way possible, and Heath Sutton is the proof. We have before and after dyno results that proved there is a difference between DPS stage 1's and Moose Misters. However, the difference is not on the graph paper. It is on Heath's boost gauge. Heath ran the dyno with DPS injectors and maxed out his boost gauge at 12 PSI. He quickly swapped in a set of Moose Misters on-site, AT the dyno, and ran again. The Moose Misters pegged his 15 PSI gauge. He really has no idea what the boost number actually is. He lost horsepower, because the extra boost superheated his intake charge. But, boost and the burning of fuel are directly related. The Moose Misters caused more of Heath's fuel to burn per combustion stroke. The fine atomization resulted in a more efficient and more complete combustion of the fuel being introduced into the pre-cup. There was much less smoke. Idle returned to "stock" conditions, and his milage has gone up. I also swapped out my DPS stage 1's for Moose Misters, and have identical results. More boost, better mileage. So, if you think that spray pattern is not important, your going to have a hard time arguing with hard data that indicates otherwise.
