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| 6.4L Performance Parts Discussion What has or has not worked for you? |
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**UPDATE**
Will this CLEAR a 5" PIPE. this is the stock exhaust with obviously the air bags and shield. the thing holding be back right now is what diameter to go with 5" or 4"... ![]() Hello, I am new to the site and am in need of your help on choosing some parts. Im looking to get some better performance and mileage out of my truck. I have been looking into the dpf back mbrp 5" exhaust and the s&b intake, i would like to keep the dpf until my warranty expires at 100k and I am at 78k. I have a few questions about the exhaust, the truck has air bags on it and a gooseneck hitch will there be some clearance issues with the 5". Being in the construction industry i tow all the time i have a 5 horse goose neck featherlight trailer that i tow every weekend, dump trailers, i haul tractors for the job sites and anything else big trailers so the exhaust and intake is much needed. Also about tuning in the future when the warranty expires i will most likely tune it. but for now not so much. All and all I am looking for some minor gains to help the truck breath a little bit better. Are these good starter parts to help me on the way? Also i have been searching youtube for videos of the 5" dpf back exhaust and i cant find any does anyone have any? Thanks,
Last edited by SCE Construction; 06-24-2011 at 07:44 PM. |
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Unfortunately the gains come from tuning and deleting. |
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5" might have some clearance issues with the airbags, the GN hitch wont matter a bit though.
A DPF back kit is not going to do much of anything for performance or sound since the main restrictions are in the DPF/Cat. |
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Agreed. I wouldn't bother getting anything for the exhaust or intake until you're ready to do the whole thing. The DPF is so restrictive that even straight piping behind it does nothing. Gotta get rid of the whole thing.
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Welcome to the org!!! I deleted my truck @ 10k, now have 25k and love it! IMHO if you're not going to do it all I wouldn't do any of it! I have the S&B CAI & am very happy with it, but I'd be suprized if you see any gains out of it without a delete & tuner!
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my thoughts with going with the dpf back was that run that for a bit cause i can get it super cheap and the intake at the same time, and then get the delete and tune. just to get stuff out of the way for now.
I totally understand about the restriction with the dpf. i will take a picture of how close the air bags are to the stock exhaust if you guys can give some insight. thanks |
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I got all my stuff at once, still have not put it on yet. But I have a extra used AFE intake I can sell ya for 100 + shipping. :-)
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The 40HP or 75HP DPF-on options would be ideal for you, given what you've described as your uses for the truck. Both files will help utilize the intake and exhaust mods you've mentioned without adding any extra stress to the powertrain while towing. |
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One other thing i wanted to ask is, my son is quite big in the aftermarket industry building the likes of 1000hp supra's, Twin Turbo Corvettes etc. He had mentioned that as i bump up the power an external wastegate can be put on to controll the exhaust gas diverting it away from the turbo at load. He said for me to ask about this on Diesel set-up's and about using a diverter valve, Does this make any sense sorry this is new to me. Last edited by SCE Construction; 04-16-2011 at 06:05 PM. |
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