Engine/Transmission (1998.5 - 2002) Silly Mods???

[Piston Slapper]

$35 Air Filter & $50 Muffler Cut

Regardless of what numbers need be or are or ain't. I put a BHAF, because It IS HUGE!! I thought what the hey, its $35. I don't have $300 for a box.



I put the filter on day while wife is out with friends. She comes home, says she is going to wolly world and is taking the truck. I haven't even drove it yet with the new filter but ol well! She comes back and says "what did you do to the truck" I played stupid. Figure'n she didn't like the turbo whistle. I said, "What?" She said the truck feels peepier. She said it takes off better from a stop. I figured you did something. I then showed the BHAF under the hood. She said, " I can't believe and Air filter would make a difference".



Same story with the muffler cut. She could tell it was louder so she new I did something. She agreed it was worth it as well. My wife is not a motor head at all but has come to appreciate a responsive motor. I normally drive the truck to work, but if I am home. I get stuck with Mini-Van cause she is in my truck!



If Momma ain't happy, Ain't nobody happy!!



I think it's worth it cause you can tell a difference in throttle response. How every little horsepower it is. I can feel the difference. It maybe an $85 dollar difference, sense I haven't rode in or seen any Bomb'd trucks in action. It works for me and my little bitty check book!!

 

[WadePatton]

Re: $35 Air Filter & $50 Muffler Cut

Originally posted by barrington



If Momma ain't happy, Ain't nobody happy!!

Momma's gonna LOVE DD3's!!! :-laf



Does she have your Diesel Dyn---er I mean Christmas list yet?

 

[Gary - K7GLD]

"turn it up to 450 hp and smoke anything on the road with 25,000 in tow..... Ya ever seen the face of a guy driven a ford when ya pass him at 80 uphill with that much weight? "





YUP - probably the look of a guy figuring he's seeing a serious, deadly accident in the making, that will probably kill YOU, and take a few other innocent drivers with you...

 

[Roger rodbolt]

Re: Re: A question in regard to larger exhaust?

Re: A question in regard to larger exhaust?



quote:

--------------------------------------------------------------------------------

Originally posted by Roger rodbolt

The 2003 ISBe HO makes around 270hp at the rear wheels and Diamler/Chrysler saw fit to install a more expensive 3. 5" and 4" exhaust system. The turbo housing is more restrictive then most of our trucks that came with a 3". As parsimonious a DC is why would they do that?... ... ... ... ... ... . Larry

Originally posted by WadePatton

three letters: EPA



Common sense testing, url is below, Larry:



You Do Need 4" Exhaust

I keep reading where members are suggesting the Mighty Cummins Turbo Diesel doesn't need 4" exhaust, and 3" is good up to 350 hp.

Also that factory air filters are ok for modified engines.

These statements are a Big mistake!



Here are the facts.

We took a completely stock 98. 5 24 valve 3500 quad cab dually 4x4 7400 lbs.

Added a set of gauges and set out to do some testing.

Near my shop exists the Dream test hill, 1 mile long flat (Non Rolling) 9% grade.



We put out markers 4 total so we could track where we picked up power i. e. low end, mid range, top end.



Made 3 runs stock and averaged the numbers.

Then made 3 runs with each modification again averaging the numbers.



The K&N air filter in the stock air box was worth 1/2 lb. boost, 25 degrees drop in EGT, and 1 mph faster from the second marker on.



The 4" exhaust was worth an additional 5 mph at the second and third markers and 3 mph on the top end, 75 degree drop in EGT, 2. 5 lbs. boost, and achieved top speed in 2/3 the distance.



We also did 0 to full boost testing and to get more accurate results it was necessary to do 10 runs stock and 10 runs with the 4" exhaust.



Stock exhaust with K&N; the boost went from 0-18 lbs in an average 3. 2 seconds.



With 4" exhaust and K&N; the boost went from 0-21 lbs. boost in an average of 2. 5 seconds.



An improvement of . 7 seconds and at 3 lbs. higher.



We did the math and came up with a 30 hp increase to the rear wheels.



All my customers report better fuel economy, more pulling power, less smoke, quicker turbo response, higer average boost, faster cool down, Plus it sounds awesome!!!!!



Fact! a 3" pipe can only support 200-250 HP



That is if the pipe is mandrel bent, 2000 and up Dodges have compression bent down pipes, this drops the pipe size down by 10-15%.



Any time you modify an engine, take care of the support systems first then add power.



Air flow, fuel supply, then fueling increase.



With out the support systems you will never achieve full potential.







https://www.turbodieselregister.com...&highlight=Test+and+hill+and+time+and+exhaust

 

[Greg Boardman-RIP]

Originally posted by Gary - KJ6Q

"turn it up to 450 hp and smoke anything on the road with 25,000 in tow..... Ya ever seen the face of a guy driven a ford when ya pass him at 80 uphill with that much weight? "





YUP - probably the look of a guy figuring he's seeing a serious, deadly accident in the making, that will probably kill YOU, and take a few other innocent drivers with you...

Come on Gary,

Just once for a little fun huh?

 

[jrandol]

Originally posted by LSMITH

If you are able to change the clutch I would go for a set of DD2's and a Van Aaken on your HO. If a clutch is not in the budget I would look for a set of DD1's or a VA and a set of 275 injectors. You might get away with the DD2's and a boost module with the stock clutch, but it will be awfully close if not over the limit. You will very likely not get away with anything more than dd1's or a set of 275s and a timing box. Lots of guys have run that combo and had no trouble and others have slipped the clutch in short order. Just an EZ or a VA will be a darn nice addition as well. The injectors are easier on the drivetrain, the box will spruce up the low end a little better. A box and small injectors are really nice for overall power and driveability. Larger injectors are really nice for driveability. Hope this helps.

I am going to have to respectfullly disagree here. I am sure mgoncalves will chime in here at some point but he has an 02 HO with a Comp and now Stage 3 injectors. Stock clutch is taking all the abuse he has been able to throw at it and no slippage. He is running the stock air box and has 4" exhaust past the stock Downpipe and his EGT's wont get above 1350 no matter what.



Frankly I am kinda jealous of that! Mine steams em up at about 1450-1550 in no time flat and him and I have the same power, expcept I have a BHAF and stock exhaust. :{ Soon to change I hope!!

 

[WadePatton]

I'd double check that pyro and dyno it to make sure the clutch is actually seeing the power.

 

[lmills]

I am quite pleased with my combo. I have the 5" exhaust, an Edge EZ, bully dog III's and a stock air box(hacked apart) with a K&N drop in filter. My EGT's are staying aropund 1000 at WOT unloaded. I haven't had a chance to try it out loaded with the trailer. I am sure the EGT's will rise fast then. I know they say the 5" is over kill, but it looks awesome and doesn;''t seem to be hurting performance. Hopefully I will get to dyno it at the next gathering.

 

[WadePatton]

BHAF DDUFM DD3's 5" 6700# and I get 1400 EGT on level 5 pretty darned fast. Of course I'm moving ON and it's time to lift then anyway. I may be sucking more hot air than I think. Scotty 2 will take care of that.

 

[mgoncalves]

Actually I can hit 1400 pretty easy in 5th or 6th with the comp turned up, but just like Wade said, it's time to let off once you get there anyways. I haven't been able to hold it to the floor up a good long grade to see what it will climb to.



The clutch still baffles me, it holds fine and even helped put the smackdown on a powerstroke yesterday. I'm sure it won't be like that forever, but why fix it unless it's broke. I haven't dynoed since the injectors, but they are definetly doing their job. I'd like to address the turbo before to long, just to clean up some of the top end smoke. That might help kill the clutch, I'll just have to wait and see.