Well the new motor is finally starting to get worn in a little bit (about 1700 miles on it now) and I notice around 1/2 throttle it sounds like there is a LOUD popping out of the stacks. I am not sure if it is "rail pop" or what is going on. New fuel filter, new engine, no muffler... yet. I am not sure if my CP3 is starting to go out and not hitting fuel to the pistons at the right time or what.

Took it to the shop and they said this happens on trucks with stacks and the best way to solve it is to put a muffler on it.

Anybody else have this with a straight piped system? It used to do that a little bit before the rebuild, but not like this.

Thanks, Austin

TXAustin's Sig:

04.5 Cummins rebuilt at 103,000miles- 6" superlift on 37" Procomp A/T, DC-1 rims, BD Super B Special turbo, BD exhaust manifold, Head Studs, Edge juice with Hot unlock, SMARTY, 90hp nozzles, AIR DOG 150, 6" MBRP stacks, AFE filter, 12000# smittybuilt winch, Ranch hand, built 48re tranny, Lock up switch

Try and get a sound clip I supose. I think I know the sound your talking about and if its what im thinking alot of the CRs sound that way around me.

MP03's Sig:

2004.5 dodge 3500 laramie Cummins HO 6speed . Full replaments bumpers front and rear, Alpine cd player with 6.5 alpine type x components, Afe intake, ATS exuast manifold. More mods to come!

I will try.. I am hoping a muffler will solve this it is just really annoying on the highway!

sounds like you have a timing issue or your floating your valves

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That is what I was starting to think. With just about 1700 miles on the motor there should not be a problem though. In front of the truck no matter what RPM it is the motor itself is very quiet! You can't hear valves floating or anything.

timing timing timing mine did the same thing backed the timing out and it doesnt do it anymore also check rail pressure might be that too most likey and cheaper to back down the timing first

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What is the procedure to back the timing down some? I am hoping it is not the CP3 but if it is then a upgrade replacement from industrial is a must

The Edge advances the timing and ups the duration, the big injectors just aggravate it. You need a prgrammer that allows some timing manipulation of the Edge doesn't.

I wouldn't run the Edge with that setup anyway, too much timing and duration and bye-bye pistons and rings.

cerberus60's Sig:

05 3500 QC SRW LWB 4x4, Smarty REVO, ISSPRO Gauges, 48RE, OPIE Inpu,t Billet Single Disk TC, Transgo Kit, other tweaks and parts

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That is what happened... bye bye #6 piston ring and had to have it rebuilt.

Which is the best box to allow me to change the timing? Also I plan on buying a smarty soon and for the most part the edge will be my "gauges".

Smarty has multiple timing settings to tune it in, TQ management removal, faster pressure ramp, plus other things. Lots of guys run into the popping with the 03-04 with too much timing and you just back it down till it quits.

Smarty\MP-8 stack is one of, if not the most, versatile stacks available. TST is also a good product to stack with a DL'er.

Looks like I am ordering a Smarty tonight! Good excuse, right?