Thanks for giving me suggestions on what the repair could have been on
my older style Cummins '98 Manual 5 speed shifting problem a few postings
back. Now that I have the powertrain back in order, I want to put in what
this Diesel performance place calls a Performance plate on my injector pump.
He suggests that they take the pump out (R & R pump $300.00) then calibrate
the pump (calibration 275.00) and then install performance plate ( retails
at 295.00). He claims I will get an additional 85 HP. The Cummins motor has
never been modified in any way. Can anyone speak from experience in doing
this? He says I will get a 25% loss in fuel savings as a result of the
modification also but have a guy at work telling me the total opposite, he's
saying my fuel consumption would be less as I gain HP. I dunno what to do
about this... any thoughts on this?...Thanks...jimi
How many miles on this engine? I thought you had a bunch. Stepping up the HP
leads to two things. More power and more parts. Everything downstream from
the engine is going to take a beating. So figure on clutch assy at the
Regards fuel consumption. The Cummins make's power through additional fuel
and once you get ability to use the additional power, believe me you will.
Just a thought you may want to look into bigger injectors first. I'm not
sure how big you can go without other mods but it might be worth looking
One other thing, maybe it is me but the price seems a bit steep for the work
involved. You might want to look into doing it yourself or shopping it
around. I'm sure one of the guy's at the tdr would walk you through it. Or
one of them might live near you and come over and help you. That's how that
You really should go here: www.turbodieselregister.com
and read up on what you want to do. The folks there drink diesel fuel
instead of coffee.
Here's a little more information on the plate:
Summit Racing sells the plate for $226.
If you make more power by making the engine more
efficient, then you'll get better mileage as long as
you don't use all that extra power.
But a diesel is a little differant. It makes more
power in this case simply by adding more fuel, and
allowing more rpm's. This will most likely cause a
decrease in fuel mileage.
So, you have to ask yourself. Do you really "Need"
another 80'ish hp? And are you willing to pay for it
at the pump?
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