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once you guys do this does anyone want to send they're stockers over so i can not knock my truck down for a week if i mess it up. If all goes good i can send my stockers back, or name your price.
 

· Cummins CrAzY
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I got mine for $45 from a guy one here parting out a truck. I had $60 in drilling them out, took it to a machine shop and they did it on a lathe.
 

· Cummins CrAzY
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Alright fellas here is what I found out. Got the lines and connector tubes installed took the truck for a run. It does not smoke near as much as with stock lines. Idle didn't seem to change much. Fuel pressure only dropped to 14 psi @ WOT it was 13 psi @ WOT w/ stock lines. Truck tries to die when put into gear. When letting out of the throttle quickly the truck tries to die. When pulling into my driveway (slight incline) you have to put your foot on the brake and give it some throttle to keep it from dieing. I am only running 150 horse injectors so it might be better with bigger ones. Piggy bank it empty so that will be a test for a later day. I plan on putting stock lines back on with the bigger connector tubes to see if it drivable that way.
 

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wow.... its like half the symptoms completely point you in the opposite direction of the other half.

im wondering if the vp44 cant keep the line full for the injector to popoff while the rpm's are down (or at all for that matter) did you loose boost?
 

· Cummins CrAzY
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I am not sure about top end boost I know I gained about 4 psi on the bottom end. I can hit 10 psi before I start to spin the tires. It was 6 before.
 

· Registered
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aybe a dumb question but where is the connector tubes at
 

· Mark Ward
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where the lines connect to the head. they are behind them and run to the injectors.
 

· Cummins CrAzY
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The connector tube is in the head between the injector and the injector lines.
 

· Mark Ward
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i take it you got the lines? sorry i was out of town the end of last week.
 

· Cummins CrAzY
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Yep got them on Sat. Whos lines are those?
 

· Mark Ward
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i got em from scheids.
 

· Registered
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The connector tube is in the head between the injector and the injector lines.
oh ok I thought it was the things on the end of your vp44 that your lines go into
 

· Registered
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Discussion Starter · #56 ·
Alright fellas here is what I found out. Got the lines and connector tubes installed took the truck for a run. It does not smoke near as much as with stock lines. Idle didn't seem to change much. Fuel pressure only dropped to 14 psi @ WOT it was 13 psi @ WOT w/ stock lines. Truck tries to die when put into gear. When letting out of the throttle quickly the truck tries to die. When pulling into my driveway (slight incline) you have to put your foot on the brake and give it some throttle to keep it from dieing. I am only running 150 horse injectors so it might be better with bigger ones. Piggy bank it empty so that will be a test for a later day. I plan on putting stock lines back on with the bigger connector tubes to see if it drivable that way.
Any new updates or changes???
 

· Cummins CrAzY
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1,394 Posts
Alright, changed the lines back to stock but left the .093 connector tubes in. Havent got to go run it hard yet. But inital results are truck does not die when put in gear. Smoke looks like it is cleared up a little (from stock). Will post more when I get a few good runs in.
 

· Cummins CrAzY
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I am convinced if you have bigger injectors you need bigger connector tubes to get the most out of your injectors. Did a boosted launch @ 10 psi and had to be light on the throttle to keep the wheels from spinning right off the truck, locked up the converter and hammered it breaking the tires loose at each gear held steady @ 54 psi When I hit 3400 rpm I backed out of the throttle and I felt the truck settle back down from all the torque it had on it. It was a pretty crazy run. The smoke was not bad but more than stock tubes and fuel psi held @ 13 WOT. The only down side I have found is when decelerating between 50 and 40 with very light throttle it gets very jerky I unlocked my torque converter (I have a full manual valve body) and it went away.
 
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