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Old 10-26-2012, 01:51 PM   #21 (permalink)
D_R_C
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Quote:
Originally Posted by JRider View Post
Why the K&N? I looked at the stock filter and it is huge with plenty of pleats and excellent filtration. I ran into issues with my MAF sensor soon after I tried a K&N.
Yes K&N is well known to eventually cause P0101 codes mainly because it has only 4 layers of filter media and flows to much air. Not good to use on turbo powered engines, we had 2 K&N's come apart in our PS diesels service trucks.
The stock is the best filtration, I use the aFe proguard 7 OEM airfilter.
Mines be in for over 5 years, I clean and re-oil it every 4-5K with no problems.
What you will notice with a aftermarket flowing airfilter is a little cooler EGT's providing you have a EGT gauge, also you might gain about .5 MPG.
Just be cautious if your going to use K&N just keep a close eye on it. IMO.
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Old 10-26-2012, 02:19 PM   #22 (permalink)
supatrucka
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Quote:
Originally Posted by camper93 View Post
No body gets 15-16 mpg around town with these trucks!
I get 17/19 and 21.5 on the hwy @ 70mph. My 01 got 19 one time going to Oklahoma the rest of the time was 13/17.
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Old 10-27-2012, 05:19 AM   #23 (permalink)
captastjoe
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Spose to gain almost 20hp with K & N, have used them on my muscle cars in the past & happy with them.
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Old 10-27-2012, 10:36 AM   #24 (permalink)
D_R_C
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Quote:
Originally Posted by captastjoe View Post
Spose to gain almost 20hp with K & N, have used them on my muscle cars in the past & happy with them.
YES! They are great on NON Turbo Powered engines.
Especially NOT so good on Turbo Powered Diesels, unless you don't mind constantly cleaning the maf sensor and having to clear codes.
I use K&N on all (5) of my non turbo powered gas engines.
Do a search on many having issues with K&N on pretty much any of these diesel forums.
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Last edited by D_R_C; 10-27-2012 at 10:36 AM.
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Old 12-05-2012, 03:03 PM   #25 (permalink)
MorganHorse
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Mileage is down to 10

have a 07.5 2500 and the regen issue has been a constant problem. Mileage has continued to go down and down. Last trip,pulling a horse trailer was under 10 mpg and the lowest pulling a trailer in the past was 12.5. Nothing is different. I have been reading about deleting the dpf, and all the other stuff, but what do you get for mileage after doing this?? Would like to hear what some of you have done and what experience you had in mileage. What tuner do I need to do this? Is it better to have a 4 or 5 inch exhaust. THANKS for any posts on this.
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Old 12-05-2012, 05:42 PM   #26 (permalink)
D_R_C
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You might gain 1-3 mpg maybe.
What you really gain is no more regen problems, no more regen stink, cooler egts and a much better running engine.
EFI and maybe Quadzilla are the only one's that I know that will let you delete the dpf and egr.

On the exhaust its your choice I've always use 4", 5" can be a little PITA to install.
The Diamone Eye downpipe is round and 3", the stock downpipe is a little smaller and oval shaped so figure from there what the gains would be, some has said the exhaust is just a little quieter with the 5", but that was about it.
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EFILive AutoCal by Idaho Rob @ ATP
http://atptrucks.com/

2007 GMC Yukon Denali "BLACK" 6.2 gasser EFILive AutoCal by MJ Engineering
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Old 12-05-2012, 05:53 PM   #27 (permalink)
MorganHorse
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I have read and heard about H&S. What does anyone know about that? Also was told today I need to keep this stuff that is taken off, so I can put it back on if and when I sell the truck. Thanks for your reply, DRC
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Old 12-05-2012, 07:32 PM   #28 (permalink)
65turboman
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Many dpf delete tuners may become hard to get because of the epa "crackdown". There are still lots around though. I would get tuning from atp or duramaxtuner. They use efi live.
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Old 12-05-2012, 07:46 PM   #29 (permalink)
MorganHorse
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I just talked to a guy in a town next to mine and he installs this you talked about efi live. He says he likes it really well. He would program with efi live, replace the exhaust system and my cost would be $975.
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Old 12-05-2012, 08:34 PM   #30 (permalink)
65turboman
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Might work good. As long as he is a competent tuner on the duramax. I prefer the true diesel tuners like many who are vendors on this forum. They have spent countless hours tuning these trucks. All that experience makes for great "tunes". The guy you mention may be great, you just want to make sure.
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