Engine/Transmission (1998.5 - 2002) Injectors with no programmer?

[JFringer]

I have a 2002 3500 NV4500 all stock other than an upgraded fuel pump. I tow quite a bit but nothing over 12,000 LBS and i want alittle more grunt. A buddy of mine has a set of Industrial Injection 85 hp injectors with 3k on them he is willing to sell at a smoking deal. I have gone the route of a programmer before and I promised myself i would never go down that road again. would the 85 hp injectors work for my application. just wondering what the EGTs might run and if the stock clutch would slip. I thought since there would be no added timing from a programmer that the EGTs would be resonable enough to tow with. the truck does have a stainless 4 inch straight pipe. i Might sound crazybut i would prefer to get my power mechanicly over all that electronic headache i had with my last 24 valve.



truck has 101,xxx miles on it

 

[HBarlow]

Your mention of the aftermarket injectors begs the question: Why are those injectors for sale after being used for what someone claims was 3k miles?

I know nothing about Industrial Injection's injectors but I don't trust anything but new Bosch injectors. Joe Donnelly installed a new set of Bosch RV275 injectors in my '01 when it had about 8,000 miles on the odometer. I drove the truck mostly towing until I sold it at 325k miles. A mechanic friend owns it now and last I asked the odometer was around 360k or a little more, still with the same injectors.

Under load and full throttle the Bosch injectors would peg my egt gauge at 1600° on a steep grade if I didn't back out of the pedal but they sure woke it up. It was an HO/six speed w/3. 54 gears.

 

[NIsaacs]

You will be fine if the injectors are good. Fuel milage will suffer some, especially without the added timing of a box. You will need a pyro, boost fooler and elbow.



Nick

 

[JFringer]

what Egt could i expect to see? i have known the guy for a long time and he ahs more money than sense. he intalled the injectors and relized it wasnt enough for his new turbo and only kept them in long enough to send stock injectors off to be worked on

 

[Bob4x4]

Big injectors on an otherwise stock truck-not the best way to go. #1 problem you will not have enough air,at the minimum you will need to buy a boost fooler and turn up the boost about an additional 10 lbs



Are you sure about having an nv4500 trans????

 

[JFringer]

yeah its a 5 speed. i might just wait and get some 275s when i get the money. i just figured these were like new and cheaper than a new set of 275s but looks like it could cause some headache

 

[Bob4x4]

yeah its a 5 speed. i might just wait and get some 275s when i get the money. i just figured these were like new and cheaper than a new set of 275s but looks like it could cause some headache

Even with 275's you will want to add some boost.
Why the 5 speed?

 

[HBarlow]

Yes, I'm sure Bob is correct about the need for more turbo or at least more boost pressure if bigger injectors are installed. I endured high egts and watched the pyro gauge on every grade if I had a trailer on. I had to reduce fueling to avoid melting a piston when loaded.

I refused to continue spending big bucks down the never ending path of modifications. The RV275 injectors gave me a signficant power increase that I could fully utilize when not towing and could manage with the pyro gauge and right foot when towing.

No owner modifications are ever going to match the near perfection of factory engineered combinations. I have seen lots of TDR members over the years follow that modification trail until they have spent ten or fifteen thousand dollars between engine and driveline modifications and ultimately lost easy driveability and reliability. Many of them sold their trucks before or after catastrophic engine failure and returned to gas.

I didn't want to play the game.

 

[Regcabguy]

The best bang for the buck on my 24v was an Edge EZ. Modest increase in economy,much better driveability and with the supplied boost elbow and boost fooler it made for a great,cool running truck.
Adding Mach 1. 6 injectors changed the game and enrolled me in that expensive slippery slope.

 

[BDaugherty]

I second the Edge EZ. If your stock injectors are fine, don't mess with them for a small bump in power. A fuel/timing box won't hurt your electronics like a programmer possibly can. I had 80hp injectors in my '01 wouldn't do it again. Gauges are important with any increase in power... at least fuel psi and boost. Another option for a little bump is a Banks Big Hoss. It will give you around 50hp/140tq and comes with an optional thermocouple to derate the power if EGT gets too high.

 

[Ncostello]

"Are you sure about having an nv4500 trans???? "

"Why the 5 speed?



I'm not following here. Why would having a 5-speed NV4500 be so odd? Were all 3500's in 2002 HO engines with 6 speeds NV5600's?

 

[JFringer]

i believe the original owner ordered the truck that way. i thought it was odd too but its a laramie with rubber floor and no overhead console

 

[HBarlow]

"Are you sure about having an nv4500 trans???? "

I'm not following here. Why would having a 5-speed NV4500 be so odd? Were all 3500's in 2002 HO engines with 6 speeds NV5600's?

No, both were sold. SO/five speed and HO/six speeds.

 

[PC12Driver]

Here's another vote for the EZ. The extra timing will decrease your egts, not increase them. Plus you'll have the ability to run the extra boost to further decrease the egts. So if/when you do add slightly larger injectors, your peak egts won't be much more than where you were stock. The 275/EZ combo is tough to beat for reliable towing.

However, the combination will put you in the might-need-a-clutch category.

 

[Bob4x4]

You said ho-they were built with 6 speeds.....
With the last 8 of the vin I can see if it is an ho-so

 

[LNaugle]

Also the Diablo Sport Power puck is a nice alternative to the edge also. Super easy install!