Choosing the right Moose Pump
Choosing the right Moose Pump
Or "How do I know what pump is right for my truck or van?"
Choosing the right pump is dependent on several factors. These factors are a combination of the mechanical characteristics of your vehicle, plus other environmental factors.
For a Bull Moose Pump, ask yourself the following questions:
Do I have A turbocharger?
Do I have an Intercooler? or "Not yet but I am strongly considering one."
Do I have a Pyrometer to monitor EGT's (exhaust gas temperatures)?
Am I the only driver? or "I will train any driver how to watch the pyrometer."
I do not tow heavily or often. or "I don't worry about smoke and its effects on my trailer."
I do not have emissions testing? or "I will get the Hypermax Puff Limiter option if I do."
I do not drive often on steep hills or at high elevation? or "I understand that gear ratio (lower) is better in order to build enough boost to keep EGT's down."
For a Moose Junior Pump, ask yourself the following questions:
Do I have A turbocharger? or "I am strongly considering one."
Do I have a Pyrometer to monitor EGT's (exhaust gas temperatures)?
Am I the only driver? or "I will train any driver how to watch the pyrometer."
I do not tow heavily or often. or "I understand that insufficient air (no turbo or intercooler) could reduce my towing capacity."
I do not have emissions testing? or "I will get the Hypermax Puff Limiter option if I do."
I do not drive often on steep hills or at high elevation? or "I understand that gear ratio (lower) is better in order to keep air moving through the engine to keep EGT's down."
If the answer to all of the above is yes, then a Moose Junior is a good fit for you. If one or more answers are negative, quiz yourself for the next lower power level, the Baby Moose.
For a Baby Moose Pump:
Do I have a Pyrometer to monitor EGT's (exhaust gas temperatures)?
If you have a pyrometer, then a Baby Moose is a good fit for you. We do not recommend owning an IDI (even with a stock factory pump) without a pyrometer with the temperature probe installed within 3" of the exhaust manifold flange, as Exhaust Gas Temperatures must not exceed 1250 degrees Fahrenheit for any length of time.
A word about towing (or total weight) and our pumps
The above questions are meant to help sort out in your mind at least the issues that confront the IDI owner looking for more power. The formula for diesel power has always been an easy one. Fuel + Air + timing = power. Reduce any of the three from optimum, and you will loose power. Reduce air without reducing fuel, and you will have high EGT's. Reduce fuel without reducing air, and you will not have an EGT problem, but you may not have enough power. With turbocharged engines, fuel, RPM and turbo parameters all factor into what kind of power can be had at what point in the RPM band. Timing is also critical for optimizing the combination of fuel and air. When we say air, what we are really talking about is oxygen. More boost, does not necessarily mean more oxygen. If air is highly pressurized, it will get hotter. Hotter air places the oxygen molecules farther apart, and this results in a low oxygen content at say 20PSI, versus maybe 10 PSI of very dense (cold air). Vehicles that tow, generate a lot of boost when turbocharged. More oxygen is needed to burn additional fuel beyond what stock pumps provide. A combination of a heavy load, low engine RPM's and no inter-cooler (and low turbo boost), is a formula for high EGT's. While exhaust gas temperatures can be regulated by throttle position, it is imperative that the performance enthusiast understand the relationship of fuel and air in an engine, so that disappointment with our pumps can be avoided. Sometimes a turbocharger is unable to deliver enough boost (or volume of oxygen) even under full load and full throttle conditions. When this happens, it may be time to look at upgrading the turbocharger or inter-cooling. Moose Diesel has solutions for helping you meet the challenge of adding more oxygen to your engine so the additional fuel your pump provides can be utilized. If you need additional help in selecting the right pump, feel free to call us. We are always happy to discuss your IDI concerns.