First Year Cummings OBDII

Psycho Mythic

Full Access Member
Joined
Mar 30, 2009
Messages
3,268
Reaction score
1
Location
Tifton, Georgia
Does anybody know what the first year the dodge ram cummins trucks were OBDII? Also, does anybody know if they make any kind of tuner for a 94 dodge with the cummins?
 
Stinker said:
they make tonsof tuners ;)
I havent been able to find one compatible with the 94 cummins. Its not OBDII. Just looking for a few ways to add some power to my dodge diesel...
 
The 94 Cummins was still used the P-7100 (I think that's the correct number) mechanical fuel pump. No electronic tuners for those things.

You can have a new cam plate installed in the pump, and also install larger injectors. This will put you in the 450 to 500 HP range with 850+ LB/FT of torque.

You need a couple other things also if you do this. Add a EGT gauge so you can keep track of the exhaust temp's. Also install a larger exhaust system.

Stay away from the early electronic systems from the first 24 valve engines. The fuel pumps are expensive, and tend to fail a lot. Also, the blocks with the number "53" cast on them had a higher than normal failure rate. These were from the mid 98 to 2000 year models.
 
Silverback said:
The 94 Cummins was still used the P-7100 (I think that's the correct number) mechanical fuel pump. No electronic tuners for those things.

You can have a new cam plate installed in the pump, and also install larger injectors. This will put you in the 450 to 500 HP range with 850+ LB/FT of torque.

You need a couple other things also if you do this. Add a EGT gauge so you can keep track of the exhaust temp's. Also install a larger exhaust system.

Stay away from the early electronic systems from the first 24 valve engines. The fuel pumps are expensive, and tend to fail a lot. Also, the blocks with the number "53" cast on them had a higher than normal failure rate. These were from the mid 98 to 2000 year models.
Thanks alot man, that's what I was looking for. Exhaust is the first thing I'm gettin for him, then well go from there...
 
scoobert said:
can't you turn the screw on these pumps and gain power as well?

Nope. That was on the 90 through 93 years. Those were a rotary pump. The P7100 is an inline pump.
 
yup no electronics on this one, best thing to do is just exhaust and downpipe and a cold air deal,they make some stuff for the pump, but if you want reliabilty, leave it be and jsut do the basics
 
Stinker said:
yup no electronics on this one, best thing to do is just exhaust and downpipe and a cold air deal,they make some stuff for the pump, but if you want reliabilty, leave it be and jsut do the basics

In regards to reliabilty, the Cummins is one tough engine. A guy here has a 95 1 ton dually with the cam plate, injectors, exhaust upgrade. He is over 250,000 miles, and the thing still runs like a top. For the most part they are reliable until you start getting past the 750+ HP range.
 
Psycho Mythic said:
Thanks alot man, that's what I was looking for. Exhaust is the first thing I'm gettin for him, then well go from there...

When you put in the Pyro (EGT) gauge, make sure you install the sensor IN FRONT of the turbo. Don't get lazy on this... those exhaust temps can hit 1400deg real fast if something goes wrong. If you install it "just" in front of the turbo or behind it, once you see rise in temp, it will already be too late. ;)
 
Black1 said:
When you put in the Pyro (EGT) gauge, make sure you install the sensor IN FRONT of the turbo. Don't get lazy on this... those exhaust temps can hit 1400deg real fast if something goes wrong. If you install it "just" in front of the turbo or behind it, once you see rise in temp, it will already be too late. ;)

Good point son. :congrats: :rock: There can be a 300 to 500 degree difference between pre and post turbo locations. And it's the pre-turbo that is most important.
 

Latest posts

Support Us

Become A Supporting Member Today!

Click Here For Details

Back
Top