2010 Cummins 4X4 SLT Automatic First impressions

[larryq]

Brought home my new truck yesterday, and have been driving around seeing how she runs...



Compared to my 98. 5 2500 4X4 Cummins, there is no comparison in Ride Quality, Steering, Brakes, Cabin noise, Engine noise in general...



All of the above are MUCH better on the 2010, though I really wish I could hear more engine and or turbo noise... . (Is there a "Turbo Ring" like on my 98. 5 that I can remove to give it a bit more Turbo Whne>)



Anyway, the single thing I find to be the most troublesome on this 2010 is the turbo LAG.

There is a significant lag with this truck before she generates any real Pull...



To be fair, so did my 98. 5 before I added a Van Aiken box, and a boost module, and FAE airbox, and a Jannety racing 4" Exhaust.



So, Im here to ask, how best to address this issue, add a few ponies, and let the engine breathe again?



I will say, that If I can get a little more pull before the turbo winds up , this will be one darned near perfect setup... .



If I could, I'd remove the EGR, and Particulate filter TOMORROW, but with things the way there are today, I guess I just need to be thankfull that I don't have to deal with DEF!





Though I Hated to let my old truck go... I'm getting spoiled with this new one...



Larry

 

[krtcummins]

I drove a friends all stock 2007 six speed the other day. The one thing I did not like was how quiet the engine was. Also, the exhaust note sounded like an old Ford 300" straight six. Otherwise the truck was nice.



I guess I just like my 2nd generation. To me it ain't a Cummins diesel unless it rattles. The new engines are way too quiet for me. I also like how I have NO smog equipment. I know someday here in California they will start requiring diesels be smogged. I have nothing to worry about, as I have NO smog equipment. I also hear the new 2010/11 Dodge diesel trucks will shut down if you add a fueler Etc. I like simple.



But congratulations on your new addition.

 

[larryq]

Update...Service scheduled for Monday...

Just to keep anyone interested aprised, I now have a service appointment scheduled for Monday...



Nothing major at all, but there is a slight Pull to the right when driving in a straight line.



To drive straight, the steering wheel needs to be held to about the 11 o'clock position.



A slight front end alignment will ne needed to correct this issue, and other than making an unscheduled trip to the dealer should be No issue at all!



Now with @ 180 miles on it, I'm getting used to the ride, but the quiet still is a bit odd for a diesel.



My Lovely Bride LOVES it... but me... well it needs more RATTLE and Whine!



Has anyone confirmed if there is a turbo silencer ring on these new turbos like on the older Holset?



Just removing that ring made all the difference in the world... .



That turbine whine sounded great!



LarryQ

 

[lschultz]

I have not looked at mine but for what it's worth I read this on one of the

Dodge/Cummins forums whether it is true or not I do not know cause I have not looked yet. They say the ring is made in the turbo there is no clip holding it in like on the earlier models you have to grind down the inside of the turbo . Heard if you replace the air intake you will here the turbo whine. For now I am just driving this one.

 

[Simplysmn]

If you take the tube off from the air box back to turbo and look down in there there is a foam filter remove it you will hear the turbo a little more and as for power it's a rocket from the factory maybe give it a few more day's theses truck's are Sweeeeeeeeeeeeeeeeet

 

[WyattEarp]

the new ride sounds great but i myself am old school and wouldn't give up my 92 for nothing, the sound, the ride or the clatter... . keep us up to date im curious on the new rigs myself as to the goings on.

 

[larryq]

Just got back from the dealer...



They found a small amount of toe error... adjusted that out and she now drives straight as an arrow!



So far all I can say is..... WHAT A TRUCK!



I really didn't know what to expect... but I am very impressed with the quality of this build!



LarryQ

 

[Metalaram]

Don't mess with the turbo ring as stated its not like the older ones that have a snap ring.



I did the deletes and have plenty of turbo noise. If you kick up the idle with the ex brake on it sounds like a fighter jet taking off. A bit lower or throaty ex sound too.



You could remove the baffle as stated before. I have not removed mine yet as I am not sure if the plastic curvy thing helps airflow or not. I don't think taking the foam around it off would hurt?

 

[larryq]

Yes... I read about the turbo ring... and am not going to mess with it... but I did remove the baffle!



It seems quite foolish to have something like that sitting there before the unprotected turbine!



If for no other reason than peace of mind, I pulled that thing out FAST!



Can you imagine the catastrophic failure of that turbine should something strike it as high boost!



That plastic/foam baffle had a very brittle feeling to it.



I could almost imagine it cracking from time and heat, and letting a piece fly to the turbo!



Not for me!



Larry

 

[MEmmerson]

I have a 07. 5. I just installed a S&B intake kit on my truck. you can hear the turbo spoole up qoit niceley

 

[DThweatt]

any luck on finding manuals?

 

[larryq]

No... and I have exhausted all the sources I could think of.



I guess it's another waiting game.....



Larry

 

[Tryingit]

If you remove the foam baffle it seems like the air ramp (for a lack of a better name) would rattle around. Any ideas?

 

[Simplysmn]

No it makes it Flow better less restriction

 

[Tryingit]

Do you mean to remove everything in the tube or just the foam. I have removed the foam and put the large plastic thing back in (seems to direct the air flow) but it is loose without the foam and rattles.

 

[Simplysmn]

Yes remove the whole thing

 

[larryq]

Yes remove the whole thing. .



Better directed air works great on a positive flow system where you are directing a flow of high pressure air, but remember the turbo inlet is NEGATIVE pressure... it starts at atmospheric pressure and lowers the pressure in the inlet tube to "Pull" air into the system.



Anything in front of the turbine (Air filter included) adds resistance to the airflow, and I don't care what shape it is. . it WILL raise resistance to airflow (Simple fluid dynamics).



Some of the things that resist the "Suck" of air (that's what we are really talking about Pre Turbo) are required... like the air filter... anything else that can be removed to reduce restrictions can only help the situation.





Off my soapbox now... . but if someone can manage to apply Bernoulli's principal to that baffle, I'd love to hear the arguement.



Larry

 

[Tryingit]

OK Thank you very much... I'm sold and the turbo noise is louder to boot.