I recently purchased my 1st Dodge diesel a 1995 2wd auto with 141,000 miles. I am taking it in to have the valves adjusted and also a friend suggested having the boost turned up a little at the same time. I mentioned this to the mechanic and he suggested that maybe new injectors may be in order and they could also add about 40 hp. The life of injectors he suggested was from 100-150K miles. Is that close in someones opinion with experience. Also, I just added the Diamond Eye 4" exhaust from the turbo back, I haven't been on the road yet, but it has a nice sound. Any info would be appreciated. Jeff ???

 

Hi Jeff,

If you haven't already done them, you need some gauges to start off with.
They are the only safety valve you have to stay on the safe side of the lines.

Injector life greatly depends on how they've been treated. If the fuel filter has been changed regularly and good clean fuel used, as well as some additive on occasion you can get 200K or more from the injectors. At the least, they can be pulled out, pop tested and shimmed to "tune" them. That is assuming you want to keep the stock nozzles..... what fun is there in that...!!!! ;D
For what it's worth, you don't really "turn up the boost"...
In order to have higher boost pressures, you basically do two things.
One, you increase fueling, whether that is with injector changes, and/or pump settings.
One or both will result in higher boost pressures.

Second, you improve your exhaust system. While this change does not directly affect boost pressures, it does improve airflow, and as a result, allow you to increase fueling.
There are two or three options for injector changes available.
As you go up in nozzle size you will have (generally speaking) higher EGT's, higher boost, more smoke/haze. In some cases even at idle speed there will be smoke or haze.
If you plan to upgrade your fueling by either of the methods above, you should also consider having the pump timing adjusted as well.
This helps compensate for the effects of pump tuning or larger injectors.
Now I just noticed that you are running a "second gen" truck, so I don't want to quote you on timing numbers, but you should talk to PDR or someone who is familiar with that gen truck.


Bob.