View Full Version : straight pipe???
06-10-2009, 12:08 PM
well i'm looking for exhaust for my truck, and i've been thinking 4" turbo back straight pipe. anybody run this setup or something similar???
i think this truck is a little quite and needs to make some noise, plus the extra power would be nice:head:
06-10-2009, 12:20 PM
If you do a search you might find a few threads in the diesel section about this :dunno:
When I had my 04.5 CTD, it was already 4" from turbo back so I bought the piece for the muffler eliminator. Definately made it sound like a big rig, lol.... not sure what it would sound like with a v-8 diesel. I didn't have my truck long enough to put gauges on it though, but from reading on teh diesel forums before I did it, going with a straight pipe defintely helps with lowering the EGT's.
06-10-2009, 01:33 PM
you'll pick up a few HP but the lower EGT's are whats most important. 4" straight sounds pretty good too, its not overly loud like a straight piped gasser. i have the stock 3.5" straight piped right now and im gonna do a 5" straight pipe system when and if i ever get the funds together.
06-10-2009, 03:49 PM
alright, thanks guys. i think the most i'm going to do with this truck is intake, tuner and exhaust. nothing radical, just help with pulling my trailer.
and pull starting semi's :D
06-11-2009, 05:48 AM
intake, exhaust and a mild tuner will still give you an awesome performance gain. the LB7's really wake up with about 100 extra horses. i used to run a hypertech on level 3 (approx 100HP) and an intake with the stock exhaust and even with 37's the truck was still a blast to drive and could surprise some pretty quick cars. i dyno'd 375RWHP with that setup. whatever tuner you go with just make sure to keep it around 100HP or less and you shouldn't run into issues with overpowering and damaging the allison.
06-11-2009, 06:38 AM
Also, if the tuner you purchase isn't one that stays hooked up in your truck and has readouts, then make sure to get gauges as well :read:
Atleast get a boost gauge and temp gauge to read your EGT's. Not sure with the Dmax, but I know with the CTD, this usually requires having to install sensors, so if this is the case, make sure to be very careful when drilling or have a shop do it for you.
06-11-2009, 07:08 AM
yes, gauges, i meant to mention that. thanks AZ. Pyro for EGT's and boost are the basics and all you should need. super easy to install too. the boost gets plumbed into the line going to the intercooler just after the turbo and the pyro goes in the exhaust manifold on the pass side. i never had them untill i stepped up to the bigger tuner but really they are a good idea even on a stock rig. it never hurts to know where your EGT's are at when towing.
06-11-2009, 10:25 AM
you have the ATS??? what kind of power gains can you get off that???
do you know how it stacks up to the Edge Juice with Attitude???
06-11-2009, 12:20 PM
ya ive got the ATS e-power. lets just say it'll rape the edge! :biggrin: the juice is 5 levels right? up to 125HP i think? the ATS has 10 levels up to an extra (claimed) 350 flywheel HP. its really the same tuner as the PPE Hot ET+2 just with the ATS name on it for half the price.
heres the numbers from ATS on the different levels:
Power Levels (LB7):
1. +50hp - +97 lb.ft.
2. +90hp - +160 lb.ft.
3. +120hp - +200 lb.ft.
4. +160hp - +265 lb.ft.
5. +221hp - +332 lb.ft.
6. +270hp - + 349 lb.ft
7. + 300hp - +362 lb.ft.
8. +315hp - +383lb.ft.
9. +330hp - +503lb.ft
10. +350hp - +530lb.ft
the dyno numbers in my sig are with the ATS on level 10 with my AEM intake and just a straight piped stock exhaust and a PPE boost increase valve. with a bigger exhaust and a lift pump id probably be closer to 500 so the ATS definetly adds some serious power. they do make an economy tuner also that would be better for a truck with a stock allison. its got 5 levels i think and im pretty sure is cheaper than the one i have cause unless youre planning on building the tranny, take my word and stay around 100HP or less or you will end up with tranny problems.
06-11-2009, 03:39 PM
Like foreman said, on any of the big 3 diesels much over 100 hp or more is about all the stock tranny can handle, even with the Allison behind the DMax. There are several upgrades available for trannies from just stage kits to fully built tranny's.
06-11-2009, 06:53 PM
alright thanks guys. i looked into the e-tuner, only $585 for it. looks like a good deal (considering the Edge was $1000, lol)
06-12-2009, 10:36 AM
dont bother with edge, they suck for the dmax. too many problems with them. the only good thing is the attitude monitor but you can get a good tuner and gauges for way less than 1000.
08-18-2009, 10:40 PM
i have never had a problem with the edge juice with attitude and i have straight piped exhaust and it keeps the egts down and sounds really good
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