Curious as to what this is? Im guessing its for rail pressure some how some way and how will this allow up to 65hp by allowing the rail pressure to read more psi? Fill me in....eBay Motors: 03-07 Dodge Ram Cummins 5.9L CP3 Chip Tuner Programmer (item 160254809210 end time Jul-05-08 09:22:11 PDT) -

Red_Rattler's Sig:

03 Flame Red 2500 4x4 QuadCab Handshaker HO, Kore HP Kit, 35's, Smarty REVO, AIRDOG II 165, Techni Cooler, K&NFIPK, MBRP Cool Duals 6inch tips, GunSlinger Shifter w/ a broken BD short throw , SRT Inine 6 Hood, Jacobs Brake, couple other goodies

Click me: Wisconsin Bombers

JAKE

It's just a rail pressure sensor with a different calibration. It basically lies to the ECU and says the rail pressure is lower so the ECU will command more pressure. If the commanded pressure from the ECU is say 23000 PSI then the "calibrated" sensor from SP would report the actual rail pressure at 21000 PSI then the ECU will command 2k more thus resulting in an increase of HP/TQ. -

staarma's Sig:

2004.5 2500 White SLT QCSB 4X4 6SPD 3.73 Edge Hot J/A w/ EZ, Smarty Jr. POD, 5" exhaust w/6" tip, AFE Megacannon Stg 2, HTT 62/71/13ss, ATS In/Ex manifolds, Di Pricol rail pressure, Diesel Dynamics Big Line Kit, FASS HPFP, Di Pricol boost and FP gauges w/ Geno's filter lid, CON Fe, Joe Hellman IC, condenser guard, Fumoto valve, PAC Brake, TDK front bumper

its not even worth the money
just cap your rail .02 -

more rail pressure means better atomization for a better burn -

2500HeavyDuty's Sig:

The Original LB7
EFI LIVE, Suncoast IV, AirDog, Banks Intake, Mbrp Exhaust, Ranch hand bumper replacements, H2 wheels with 35's, and some secret squirrel stuff
12.9 @ 103

don't forget to add faster wearing injectors too.......... -

mikmaze's Sig:

04.5 Qcab shorty 4X4 325/600 GOERENDified 48RE ATS Co Pilot ..... silencer ring and kitty MIA, Outerwears, AFE torque tube BHAF, 4" Magnaflow SS exhaust, H2 swap, Westin nerf bars, d plate rail covers, Billet grill insert - fuel door, Alpine HU Kenwoods all 4 doors, Thunderform box, JL subs, JL 500/1 amp, Line-O-Fire, Silverstars, 6" SS tip, Smarty S-06, Dual Viair 380C comps, 8.5 gal tank, 1951 diesel train HORN 2" level kit

and wearing of the pistons

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Ha whoa.... How many miles were on that motor?! One thing always leads to another -

miles i dont know, its a daily driven 10 second truck.

But hes running dual modded cp3's and maxed out rail pressure. also turning out 4500+rpms -

cool, I dont remember seeing pistons with the optional Flower pattern molded into the top.
Looks expensive! -

theyre lighter than stock -

Can I do that with my 07, how do I do it, and will it increase mileage at all due the better atomization? -

hydroshok's Sig:

2007 Dodge Ram 2500 CTD 5.9L

afe intake, ebay strait through muffler, Snow Performance stage III MPG, Quadzilla max mileage, AirDog, Banks Techni-cooler

Yes you can cap your sensor on your 07, I will take some pictures of the motor in the garage when I get home and post them with step by step instructions on capping a rail on a CR 5.9. -

06 DIESEL's Sig:

My rig - 06 Dodge Ram 2500 Crew Long 4x4 SLT CTD 6 speed

A little here, a little there, now it smokes

What does capping the rail accomplish? -

By capping the rail you increase rail pressure. If you have a weak rail pressure blow off valve it will release pressure too soon and cause your rail to "drain". One of my friends actually had his rail pressure cap blow causing the rail to drain all the time. Instead of buying a new valve we capped it internally and he has yet to have a problem with it and has run up to 25k PSI iirc. -