Stacks vs Straights

wayne.malone07 · 07-11-2011, 04:09 AM

Just bought my first diesel. 10' 6.7. Im in afghanistan for the next 6 months and want to buy some parts that wont void my warranty but will help performance. My first purchase will be exhaust but I dont know if I should go with Stacks or a straight pipe out in front of the p/s tire?

**Krazeeun** · 07-11-2011, 04:54 AM

Welcome to CF, you've got a lot of reading to do.

Short answer is if you're worried about warranty then leave the truck alone. Any warranty friendly exhaust's arent worth having because you'll have to retain all emissions equipment and straight piping after emissions is, in every way, pointless.

IMO, F the warranty, delete the emissions immediately and save up for a tranny unless you got a manual, then save up for a clutch

Rockwerx · 07-11-2011, 05:13 AM

Unfortunately there is pretty much nothing that you can do for performance mods that they won't void the warranty for. They are getting pretty sticky on this. They send out bulletins for the techs to check for evidence of any tampering. Also the ECM will retain info on engine parameters so they can tell if anything has been modified. If you want to gain a bit better fuel economy and save your engine from ingesting soot then many guys have had good luck by unplugging the EGR mixer valve. That is about all you can do for mods that won't void the warranty. Plug it back in and after a few engine cycles the CEL will go out if you have to take it in for service. They will want to clean the EGR system because of a code stored in the ECM. In the mean time, start a mod fund and after you shake the truck down some more you might decide to mod it after any bugs are worked out under warranty.

Stay safe over there and good luck with your new truck!

tuff4x4 · 07-11-2011, 09:27 PM

the only thing that stacks belong on is something that can pull 90k.

cmns2500 · 07-11-2011, 09:29 PM

i personally don't think a 6.7 sounds right w/ stacks w/ the stock turbo and manifold...now if you swap those for 5.9 aftermarket parts, sure go w/ it...get the deletes and a tuner for now, then start savin up for a tranny and other things

wayne.malone07 · 07-13-2011, 05:20 AM

So an exhaust system from the DPF back wont make my truck any louder?

**Krazeeun** · 07-13-2011, 05:37 AM

no, it won't change anything at all except make your bank account slightly smaller

disposablehero · 07-14-2011, 04:26 AM

I went with a straight pipe on mine. It sounds great and several 5.9 guys have agreed. There are ways to get rid of the DPF without doing a tuner. I want a single stack but I have a dog that rides in the bed and after seeing others with stacks the bed fills with smoke. He would be quite pissed and so would the wife. There are some pretty good dealers out there that don't care much about the emissions mods. Just return to stock and you are good to go. Mine is in the shop right now and the DPF is off.

***mattpopp*** · 07-14-2011, 02:08 PM

Quote:

Originally Posted by tuff4x4

the only thing that stacks belong on is something that can pull 90k.

Me to, I hate stackS. Stacks look stupid in my opinion. This is why I have a single mitre cut stack in my truck.

It can't pull 90klbs but mine makes more power then most that can pull 90klbs.

To the OP, if warranty is important to you then don't touch a single item on your truck.

Sent from my LG-P999 using Tapatalk

torqueindustries · 07-14-2011, 02:43 PM

Also as posted in many topics on this forum. If you do decide to delete your emissions you will have to have some way to keep your truck from going into regen such as a tuner, module, sims or many other products out there.