Cummins 5.9 injectors?

[sled175]

I have a 99 cummins just bought an edge chip w/ a 25 - 65 horse . Just wondering what stock injectors hp are? Wondering also if there was anyone with info about goin a step or two higher with my injectors, don't want tons of power just a little more to go with the chip. It has brand new stock injector pump & transfer pump, wich sucks but the dealer put them on 2 months after I bought it. Puting bigger exhaust on when I can save up the cash. The truck is paid for so now I'm lookin to make it hold its own

11 mpg just is'nt cutting it...

Thanks -Bryce

 

[Rattlin_Ram]

www.tdr1.com or www.competitiondiesel.com

11mpg is HORRIBLE... something aint right or you have a very heavy foot...

Fuel pressure gauge is mandatory on that truck so get that first! I assume it has an Edge EZ on it, which is what you mean by the Edge chip? Much more than an Edge EZ will be hard on a stock clutch or auto tranny...

Is it stick or automatic?

I think stock hp on that truck was about 215 or maybe 225 or so.... I'd have to double check...

I'd get an edge drag comp for it, a set of gauges, or a Edge Juice with Attitude monitor and start savin for a new clutch or auto trany rebuild... There are a few other options, but that's about the best bang for the buck... and proven hp....

 

[Tackbtch]

99 Cummings

I have a 99 with a six speed. It came to me with a 45 hp Van Atkin chip. Stock injectors, K&N filter , stock exhaust. Yes a fuel pressure gauge is a must have...get one before your upgrades. Stock the 99 has 235 hp. My truck does just fine power wise, aint no dragster. We get 17-18 in town and just below 20 on the hwy at 75 mph. Dont let your fuel pressure get below 5 psi or your into it for a new injector pump. I run an Air Dog lift pump. Constant 14 psi no matter where my foot rests on the pedal Son runs a Edge controler with up to a 150 hp and runs 100 horse injectors and some kinda oversize turbo...crazy power...just a matter of time before his gear boxs grenade or twists a drive line apart...Dino

 

[sled175]

Its an auto, I will look into the tranny build and gauges then before I do anything more. It'll get 16 mpg on the freeway but then it goes back down in town, I use four wheel drive on a daily basis that might have something to do with it.

The fuel pressure gauge is a great idea, if it does get to low what do ya do to get it back up?

Thanks for the help -Bryce

 

[Tackbtch]

Its an auto, I will look into the tranny build and gauges then before I do anything more. It'll get 16 mpg on the freeway but then it goes back down in town, I use four wheel drive on a daily basis that might have something to do with it.

The fuel pressure gauge is a great idea, if it does get to low what do ya do to get it back up?

Thanks for the help -Bryce

Auto trans in 99 sucked bad, always shifting, looking for the right gear. With a good trany build that would help get more of your power to the rear wheels. Replace your lift pump if pressure drops below 5 psi. Low pressure will take out your injector pump. And dont use a stock pump. Theres several after market pumps out there. I run a Air Dog , very easy install. Dino

 

[Plowboy]

Well depends on what made it go to a low PSI. If your pulling a load or a hill real hard and it drops, then just back out of it so as not to demand so much from the pump as it can’t keep up. However if it starts to become a regular thing occurrence and or stays below 7 PSI all the time a new lift pump is needed. You DO NOT want to starve the injection pump on that model pickup as you WILL be replacing the injection pump again. As well as Trany work, I would put on a aftermarket fuel pump, like a FASS or an Air Dog. As stated earlier they should run about 14-15 PSI all the time, no matter how much you demand of them. If you are going over 400 HP I would go to the FASS or Air Dog 150 and anything under you should be good with the FASS or Air Dog 95. The factory lift pumps are junk and only have a predicted useful working life of 35,000 miles under stock conditions and some don’t even make it that far. Bump up the power and the stock lift pump can’t keep up with demand. As gauges go, I would get the Juice and Attitude monitor combo. Reason being that the Attitude monitor allows you to monitor just about every function of your pickup while your on the road. Exhaust temp, trans temp, fuel pressure, turbo boost, fuel temp, true Oil pressure, and a few other things I believe and best of all its all built into one little box that mounts on your pillar and you can adjust power settings on the fly. Also has a function that allows you to set warning for exhaust temp red lines, fuel pressure red lines, you get the idea.

 

[skidooer1]

Well depends on what made it go to a low PSI. If your pulling a load or a hill real hard and it drops, then just back out of it so as not to demand so much from the pump as it can’t keep up. However if it starts to become a regular thing occurrence and or stays below 7 PSI all the time a new lift pump is needed. You DO NOT want to starve the injection pump on that model pickup as you WILL be replacing the injection pump again. As well as Trany work, I would put on a aftermarket fuel pump, like a FASS or an Air Dog. As stated earlier they should run about 14-15 PSI all the time, no matter how much you demand of them. If you are going over 400 HP I would go to the FASS or Air Dog 150 and anything under you should be good with the FASS or Air Dog 95. The factory lift pumps are junk and only have a predicted useful working life of 35,000 miles under stock conditions and some don’t even make it that far. Bump up the power and the stock lift pump can’t keep up with demand. As gauges go, I would get the Juice and Attitude monitor combo. Reason being that the Attitude monitor allows you to monitor just about every function of your pickup while your on the road. Exhaust temp, trans temp, fuel pressure, turbo boost, fuel temp, true Oil pressure, and a few other things I believe and best of all its all built into one little box that mounts on your pillar and you can adjust power settings on the fly. Also has a function that allows you to set warning for exhaust temp red lines, fuel pressure red lines, you get the idea.

good info. the j/a combo works awesome on these trucks and the gauge install is simple compared to analog gauges. spend $1300 on a goerend t/c and 500 on a valve body ,50 on a haisley valve body assistant and you will have a tranny that will hold up to the power.billet shafts if you want to do boost launches would be a good idea.I run a fass on my 02 but an air dog would be a good choice aswell since they are smaller and have more mounting options.