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12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

so my truck runs strong up till around 60 then doesnt give much after that. i can go wot and it just doesnt jump like i feel it sould. i am used to my old 2001 and it would go from 65 to 105 in ... JOIN NOW TO REMOVE TRACER

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  #1  
Old 12-19-2009, 04:48 AM
Diesel Fan

   

Default need more power at higher speed???

so my truck runs strong up till around 60 then doesnt give much after that. i can go wot and it just doesnt jump like i feel it sould. i am used to my old 2001 and it would go from 65 to 105 in a blink of an eye. so my question is what else do i need to get more out of the top end? will pushing the plate full forward and getting a set of 191 dv's help this?

powermad's Sig:1997 dodge cummins sport, fully built 5 speed swap, afe intake, 62/65/13 turbo, ats 3 piece manifold, #10 fuel plate, 3000gsk, 3" carli suspension.
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  #2  
Old 12-19-2009, 05:08 AM
hotcummins's Avatar
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Status: feel like a fat kid trying to reach the twinkies

   


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get a bigger plate and some injectors do you have a govenor spring kit
dvs will help a little but injector will help more

---AutoMerged DoublePost---

sorry didnt see the gsk in the sig till now

hotcummins's Sig:its a 12valve with a few performance adders

Last edited by hotcummins; 12-19-2009 at 05:08 AM.. Reason: Automerged Doublepost
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  #3  
Old 12-19-2009, 07:15 AM
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yea i have 3000gsk if i push the plate full forward will that help much? i also dont want a smokey mess either, im thinking about some 5x.012's. what pump mod causes most the smoke? i want to be as smokless as possible. ive know that the smoke is controlled 99% by the driver but we all know that these trucks smoke. oh and what the difference between 191dv's and other size dvs and what do they do? sorry for all the questions.
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  #4  
Old 12-19-2009, 07:33 AM
DieselMinded's Avatar
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do you have 370 injectors?

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  #5  
Old 12-19-2009, 08:52 AM
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Slide the plate and tune the AFC....that will control the smoke down low and the the plate FF will give the rack more travel for your upper R's fueling you need.

PhilipR's Sig:-Phil-98 Dodge Ram 2500 4x4,12V,47RE Suncoast Billet input shaft, Suncoast H/D Extreme Trans kit, Goerend Triple disc converter, FASS 150/90, FASS Suction tube, Amsoil Ea air and pre-filter, 100 plate, 4K GSK, 370's, AFC Mods, CoolerTubz intake, 5" stacks, BD-SBS, Autometer Z-series Pyro/Boost/Trans/FP, Amsoil front to back.
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  #6  
Old 12-19-2009, 09:21 AM
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thats exactly what i was looking for! im going to put a set of 215 pump injectors in and do some grinding on the plate. so how do i tune the afc? and does anything need to be done with the star wheel?
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  #7  
Old 12-19-2009, 09:48 AM
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Status: Boost is like crack, you always want more

   

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I know there is a nice article about tuning the afc somewhere, I looked but can't find it. I know Duster can find it, he's good at that stuff. I did injectors first, made a difference, added in DV's later and it made a noticeable difference. My truck can be smokey as you want it, or you can drive it normally and not see any smoke at all. its up to you. I think its hard to do all these mods and not have any smoke whether you want it or not.

STUMPMAN's Sig:94 4x4 automatic, Billet input shaft, twin disc torque converter, BD valve body, Gauges, 4"DP-5" exhaust, kdp kill,TC lock-out switch,Suncoast loc-up control,BHAF, S-300, DSS, Mag-Hytec front & Rear diff,trans cover, DDP 140 injectors,DDP DV's, ported exhaust manifold,70lbex. springs, 100 fuel plate, 4k spring kit, CFM+ Intake,FASS, O-ringed, arp studs, fuel press gauge, 18" Moto Metel 951, Road Armor bumper, 9500 winch,1995 2500 4x4
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  #8  
Old 12-19-2009, 09:52 AM
PhilipR's Avatar
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Not if the AFC is tuned in right. I am going to do an AFC tuning thread between Christmas and New Years with pics and all.....if you cant wait do a search and you'll get TONS of hits.
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  #9  
Old 12-19-2009, 11:49 AM
oglejust's Avatar
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if u put dv's in ull def have smoke
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  #10  
Old 12-19-2009, 11:55 AM
94 12valve's Avatar
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timing bump

94 12valve's Sig:Dave
"Half Fast" 2.6 puller/weekend toy
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  #11  
Old 12-19-2009, 04:30 PM
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so i think im going to wait for the write up for the afc tuning. but i am going to see what i can do about sliding the plate. and another thing is i only build 16-24psi. im guessing here but doesnt that seem a little low?
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  #12  
Old 12-19-2009, 07:55 PM
12.valve.hauler's Avatar
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i am running stock everything but exhaust and i tokk the plate out and even with a slippin clutch mine will straight fly from 60 to 100. cant wait to put the clutch disc in that i got from fastcr( thanks man) and see what it does from there. oh and the starwheel is ff.

12.valve.hauler's Sig:97 ctd 4x4,230,000,215hp pump,no plate, star wheel ff, silencer ring disposed of, open turbo,courser mt's, 5 inch mitre cut stack(stuck up under the bed)
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  #13  
Old 12-20-2009, 03:42 AM
Diesel Fan

   

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man i hate buying trucks that someone else tuned! the thing is great down low but ugh i just dont like the 60-85mph response. im just gong to get a good exploded pic of the pump and mess with everything till it seems to be how i want it. ive been doing a lot of search's and think i have enough knowledge to get it tuned enough for my liking.i will keep you guys informed with the outcome!
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  #14  
Old 12-20-2009, 11:08 AM
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