What else do I need to upgrade if I put high performance injectors in my Dodge Cummins?

Question

I already have a stage 2 air intake and 4 inch exhaust, but is there anything else I would need to upgrade?

Since some asked, It is a 12 valve, with an inline fuel pump, and it has no computers. I don't need to do anything with the transmission, its been set up to pull my rockcrawler, I just want a power boost.

Answer 1

Yes, a better clutch or a torque converter. In most cases I would recommend rebuilding the transmission and installing a stronger torque converter. After increasing the horsepower 75 hp, and torque 100 ft-lbs--this becomes the weak point. Because you did not state what year or fuels system ( rotary, in-line, vp-44, or common rail ) I can't comment on what power up grades would work best.
Okay so you want to have just fun with your 12 valve engine--I hope you have a head gasket in waiting. 1st get a cam in the pump--yes a cam and adjust the slider ( cam- drives the plungers in the pump)-- or send it out to have a kit put in it for 425 hp and set up for marine use in order to get 3500 rpms out of the pump, upgrade to the heavy duty valve springs, shin your fuel pump return fuel return to 25 psi, back off the afc controls so that it gets more fuel with less boost (really spin your tires there), get a spill porting tool and mount the fuel pump to 15 degrees before top dead center. Nos injection system right after the charge air cooler, and propane injection -- at this point you should be pushing around +750-900 hp and 1200 ft lb or torque

Answer 2

Depending on what year of the cummins you have (24 valve Cummins trucks need this stuff), you will need a lift pump to help support the higher fuel volume demanded by your fuel injection pump. If your factory lift pump does not pump enough fuel to your injection pump, it will lose pressure and fail, costing you about $2k. Also a fuel pressure gauge, and exhaust gas temperature gauge would be a good idea. If you have an automatic add a trans temp gauge to that list. Good luck and have fun!!

Answer 3

Before you spent a lot of money on upgrades you should have researched all your options. There are a lot of kits for Cummins Turbo-diesels that will make them do anything you want and some that will make them do what you don't want , like spin your tires for a city block. Everywhere on the internet are upgrades, just type in Dodge Turbo Diesel, and hit enter.

Answer 4

If you are doing all this to increase the HP than you also need to get your engine a complete overhaul with bigger cylinder diameter and bigger piston & rings to really make it a muscle car. I don't believe in all this. Just leave the car as it came by the manufacturer otherwise go and buy a Ferrari!

Answer 5

for basic upgrade,u will also need a header. ur header diameter must be as close to ur exhaust diameter as possible (.5 inch is alot) and must not be bigger than ur exhaust pipe(to prevent backward flow).

Answer 6

get new headers, and an upgraded computer chip

Answer 7

if im right u will need to upgrade the computer...

Answer 8

before i did too much more i would upgrade TRANS. fallow weak links down driveline

Answer 9

Wat is a high performance injector ?? Somebody gettin your $$