24 Valve 2nd Gen Dodge Cummins 98.5-02 Discussion of 24 Valve 5.9 Liter Dodge Cummins Diesels with VP44 Injection Pumps
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Any easy engine upgrades, tweaks, or swaps for a 98.5 24v?

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Old Oct 10, 2009 | 04:13 PM
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Default Any easy engine upgrades, tweaks, or swaps for a 98.5 24v?

I have a friend who has a 99' Ford w/ a 7.3 powerstroke in it who has found several easy mechanical type upgrades that were either free or really cheap and also some swaps, like a using an intercooler out of 6.0L powerstroke in his 7.3. Things that improved gas mileage, performance and engine life and all of these were things that could be done any given day in a garage with few tools and basic mechanical knowledge. Now I know there's people out there with the Cummins 24v 5.9 like mine who have done some tweaking or swaps or whatever to improve there truck and I was hoping you could share. Or maybe give me some links with some info like this, if there is any. Thanks...
 
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Old Oct 10, 2009 | 04:53 PM
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I really don't there's too many options with these motors as far as free or cheap goes mainly because they have electronic injection so you can't do any fueling or timing adjustments without buying a box. Cleaning your IAT sensor may help with mileage and also a BHAF but that'll run around $60. Rerouting the crank case vent tube will help keep the engine cleaner and keep blow by from junking up your radiator. It looks like since you have replaced the VP44 you already know that the fueling and fueling system is your main priority with these engines.
 
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Old Oct 10, 2009 | 06:01 PM
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A inline holley blue is a cheap option, really theres no performance mods for free with these trucks. Boost elbows are also pretty cheap but wont do much for performance.
 

Last edited by Dr. Evil; Oct 12, 2009 at 10:36 PM.
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Old Oct 10, 2009 | 10:41 PM
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You can remove the Turbo Silencer to give your turbo more sound but it doesnt help or hurt performance.

If you use a Holley Blue make sure you put an inline filter into the fuel line before the Holley.
 
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Old Oct 10, 2009 | 11:55 PM
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Yeah I took the silencer off. Never have cleaned the IAT sensor. I'll do that. These are good. Keep them coming. Anything else?
 
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Old Oct 11, 2009 | 04:17 AM
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Clean MAP Sensor. Check APPS Voltage.
 
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Old Oct 12, 2009 | 08:32 AM
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To be flat out honest, I think apart from the silencer ring, there is not alot out there. Poke around on the site, you can find some ways to wire up a loc up switch, smoke switch, even a home made high idle wiring diagram.....
look here and you might get some ideas
 

Last edited by oudive; Oct 12, 2009 at 08:42 AM. Reason: added something
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Old Oct 12, 2009 | 01:46 PM
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Where are the IAT and MAP sensor located and what would I clean them with?
 
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Old Oct 12, 2009 | 05:11 PM
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There back and up from the stock fuel canister. I always use MAF Sensor Cleaner.
 
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Old Oct 12, 2009 | 10:16 PM
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When you say stock fuel canister are you referring to the fuel filter or the lift pump? Also how do I know which sensor is which?

---AutoMerged DoublePost---

Do I have to use a sensor cleaner or can I use something more convenient around the garage?
 

Last edited by Renteria1217; Oct 12, 2009 at 10:16 PM. Reason: Automerged Doublepost
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