Engine/Transmission (1998.5 - 2002) Ho vp44

[mstreak1]

I have an 02 2500 with 100 hp injectors, S & B air kit, Quadzilla Adrenaline, Banks High Ram intake, Super B turbo, Air Dog II 150 pump and a few more things. My question is does anyone here have experience with the BD hot rod VP44. I put one on my truck a little over a month ago and it makes the truck fly, but it has a strange idle. Kind of like a gas motor with a big cam, you know a lope sort of. Does anyone know if this is normal? It only does the lopey idle thing when the motor is warm. I would be interested in any and all comments or thoughts on the Hot Rod VP44.

 

[RAJohnson]

Welcome to the TDR.



Whats your milage at? Any codes?

 

[mstreak1]

The truck itself has 130,000 on it, but the engine only has about 20,000

 

[cerberusiam]

IIRC, that lopey idle is one of the attributes of the hot rod pump. Post up a sound byte, I wanna hear it and see if I should order one.

 

[mstreak1]

I'll see if I can figure out how to post a what it sounds like. The pump makes the truck run like a top fuel dragster. I just want to make sure I'm not going to hurt the motor with over fueling or something like that.

 

[Joseph Donnelly]

Between the high pressure and volume of the hot rod pump and your big injectors, the ECM has a hard time keeping the idle speed down to stock specifications. The ECM reduces fuel to one cylinder at a time in an attempt to reduce idle speed, and that gives the lopey idle.

 

[darkhorse]

I have a high output pump from Industrial Injection. Mine tends to idle just like the original one but I do recall that rough idle was experienced by quite a few people. My installer quipped that I lucked out & got a smooth one. J Donnelly's post is interesting.

 

[mstreak1]

I've heard the same thing, that some people just get lucky and get one that idles smooth like the original. I also heard that you can smooth them out some by going to oversize lines and tubes. Does anyone know if that's true or heard anything about that?