ok as far as i can tell we started in the right direction as far as mods go. we put a 3" exhaust on, and a K&N drop in. now i hear that the stock vacume sys sucks! so the best way to go is a Turbo Master. but i hear that you can make the part thats on the turbo, the lil spring on the rod thing. can someone tell me how this make more power? and how to make it? and with the air box, can you leave the air box in tack, and just take the snorkle thing out of the fender? will that make more power?

and now for the sound, the exhaust made a big difference. but i LOVE the way the Dodge diesel sound. is there a way to get that almost knocking sound? and turbo wine, whats the best way to get that back? when we cut the cat out we started it up with no exhaust past the DP, I LOVED IT! but once we put the pipe and muffler on, it took the wine almost completly away:( so how do i get this back?

is there a way to get that almost knocking sound? and turbo wine, whats the best way to get that back?
Simple, follow my mods, don't be surprised if you blow it up though.

once we put the pipe and muffler on, it took the wine almost completly away:( so how do i get this back?

Take the muffler out it sounds great with a straight pipe

My first post on this forum, but I too have been thinking about doing something with the exhaust. Other than the louder sound, is there any performance increase in running straight pipes?

Also, I currently have the stock exhaust, but am thinking about putting a kit on it with bigger pipes. I have seen some on ebay for around $300, but wondered if anyone has tried them. Do you have any suggestions on good (but inexpensive) exhaust kits?

Thanks! Love the forum... you guys ROCK!

"Were gonna rock it till it strike the hour"

I caught the Quiet Riot reference, even if no one else did.

Tim

My first post on this forum, but I too have been thinking about doing something with the exhaust. Other than the louder sound, is there any performance increase in running straight pipes?

Also, I currently have the stock exhaust, but am thinking about putting a kit on it with bigger pipes. I have seen some on ebay for around $300, but wondered if anyone has tried them. Do you have any suggestions on good (but inexpensive) exhaust kits?

Thanks! Love the forum... you guys ROCK!

the stock exhaust on the TD is 2.5"! its TINY! any upgrade will give you more power. just cutting the cat out will give power and a nice tone.. i really wouldnt bother with an exhaust kit, unless your looking for the DP too. We(my dad and i)just cut the cat out and put a strait 3" pipe to a magnaflow performace muffler, then the pipe exits just infront of the rear wheel. if i was too do it again i would put 4" strait pipe without a muffler or anything...

SSdiesel supply has a good 4" exhaust kit. You need a welder to modify the brackets, though.

Regarding that post about the vacuum system sucking......never mind;)

If it ain't broke, don't fix it. The turbo master is a good boost controler because it's easily adjusted, and costs less than a vacuum pump (if yours is broken). Make sure you've got boost and pyro gauges as a minimum before you monkey around with boost control.

By the way, CR- do you have any new movies of your truck for us to see, and most importantly HEAR?

WD21, taking the snorkle out and cutting the air box is a good idea, but using a K&N is maybe not. I've had K&Ns in some gassers and they were nice, but I've been reluctant to put one on my truck because I was afraid that it just wouldn't filter well enough. Then I've been doing some research on the Cummins recently and found some warnings not to use K&Ns on them because they won't filter as much dirt out of the air, and the oil could be sucked off the filter into the engine to clog sensors.

Instead, AFE intakes were recommended for sufficient filtering and good airflow. Delco paper filters seemed to be best on filtering but most restrictive on airflow.

Nothing i can post here as file sizes are too large. I will put some on my site soon so you guys can take a peek. I have hi speed at home finally...... yipeeeee!!!!!

FYI - I installed a 5" stainless tip on my exhaust last weekend. There is now a significant dedrease in turbo whistle....it's there, but not as sharp.:cool:

FYI - I installed a 5" stainless tip on my exhaust last weekend. There is now a significant dedrease in turbo whistle....it's there, but not as sharp.:cool:

Massive Censored Bummer

A 3" system will get more woosh than a larger (3.5") system which covers up the whine. I find the 3.5" to be about the best compromise. Now as for combustion noise, my high flow injectors do a nice job of crispening it up. Also a phazer gear drive will help.

The stock vacuum system is all that I ever use including my 96 GMC untilI went to the big non wastegate turbo...

My exhaust is dyno proven...

Hey John do you have some dyno numbers on your IC on a before and after install? Just curious to see what i can expect when mine arrives.

Dyno came after my intercooler, sorry.

Tough to dyno an intercooler as getting the air thru it and the engine bay takes a pretty decent fan. We ran a truck with injectors and intercooler at about 180HP though which is pretty stout...

180 HP hey....Hmmm... i won't be happy until i see at least 300 HP, i've got a set of tires here just waiting to get blown off and was waiting for the IC to do it, might have to do it without it just for show. A couple of days ago sitting at high idle on about a 90F day my IAT's were over 195F just sitting there, i wonder whats up with that? PMD cooler is also very hot where it is placed which i find weird, i can't hold my hand on it for more than a couple of seconds?

So how much louder will it be if you just cut the cat off and will you be able to hear whistle better?

Run a straight pipe, nothing beats the sound at WOT, EGT's will stay lower. My 3" has always been enough to satisfy me:eek:

Springs on the WG don't give up or sieze eat the belt.

By the way, CR- do you have any new movies of your truck for us to see, and most importantly HEAR?

Ok you got me thinking again so here's the exhaust video to start HERE (http://www.65td.com/forum/forum_posts.asp?TID=9&PN=1).

Run a straight pipe, nothing beats the sound at WOT, EGT's will stay lower. My 3" has always been enough to satisfy me:eek:

Springs on the WG don't give up or sieze eat the belt.

anybody know the belt size to use if you remove the vacuum pump? I have a single alternator and yes it does chew on the belt a little.

I think guys have posted one inch shorter iirc

Simple, follow my mods, don't be surprised if you blow it up though.

WD21 welcome to the site you can get real agressive like CR (gotta love them thrill seekers pushing the envelope) pardon me CR if I hang out in cheerleading section and watch your progress; or go the route I outlined in FAQs which will net some more Hp in a somewhat tamer fashion how much power you need/want is also dependent on size of the wallet. I'm not through yet myself I'm working toward 300 Hp, my journey has been at a somewhat slower pace, started in 2000. JK's exhaust is a good start. swing by the welcome notes and FAQs if you haven't gone there yet, some tips how to better use the site.

anybody know the belt size to use if you remove the vacuum pump? I have a single alternator and yes it does chew on the belt a little.
A '96 w/ a/c uses a 61010 and one size smaller is a 61000. it's 15mm shorter not 1".

WOW, i didn't realize i had a cheerleading section. If and when things start flying out of the engine compartment (probably when is more like it) i'll be getting the Bullet proof hummer block from DSG, they build it with the stud girdle kit, gear set and whatever else i ask for, the thing i hate the most about this truck is how it goes into lock-up, takes forever and kills 0-60's but i just don't know what to do about it at this time. On the good side, fully loaded with fuel (slip tank in the box) this morning i made a 0-60 run @ 11.12 seonds, then just normal driving from a dead stop around a T intersection corner i was hardly accelerating and this thing squawked the rear left going into 2nd.... Yeah it was pavement!):h

John if you catch this i desperately need that IC on or before July 7th :D , she's gonna get damn hot going through the rockies on holidays!

WOW, i didn't realize i had a cheerleading section. !

Hey CR you got one even if it's just me, I'm watching you just to see how far she will go before she blows, you may want to give Bill Heath a call IIRC he ran up to 500hp without grenading back in the days he was drag racing his TD, no splays or girdles on that engine.

500HP from a 6.5!!?? Holy Censored! HOW?

I think big turbo and lots of fuel, call and ask him, this was a drag race set up not a daily driver, also back in the day when he had some extra "special" items on his truck some of which got stolen during a break in where he lost of his performance stuff

Hey CR
Just got done watching/listening to your video on that 4" exhaust (about a dozen times actually)...............AWESOME ! I wished my turbo whistled like that ! I'm not looking for the deep-throated exhaust sound, just the Turbo Whistle.

Thanks for sharing that video, now if I just could figure out how to get that video sound to play over and over while my computer is sitting idle, LOL ! ! ! ! ! !

Hey CR
Just got done watching/listening to your video on that 4" exhaust (about a dozen times actually)...............AWESOME ! I wished my turbo whistled like that ! I'm not looking for the deep-throated exhaust sound, just the Turbo Whistle.

Thanks for sharing that video, now if I just could figure out how to get that video sound to play over and over while my computer is sitting idle, LOL ! ! ! ! ! !

In windows media play go to the play menu at the top and select repeat then hit play....... it'll play over and over again....

Don't forgot to crank up the volume!!!:ro)

I'm now contemplating putting on a muffler so the whistle is more pronounced! (that and 3 weeks of driving on holidays)

Thanks CR ! ! ! !
That's the reason I'd like to keep the exhaust note as quite as possible too. I had a full size Chevy before this one that had straight pipes out the back and a V-8 gasser and all those long haul fishing trips got to me. I found I would get to the tournament and have a killer headache from the noise. I swore I wouldn't modify the factory exhaust system again........however.

A nice exhaust sound that's not overbearing would be great, but getting my turbo to whistle like I'm acustomed to with the Powerjoke would be the catsazz :ro) .

So a 3" Down Pipe (the pipe out of the turbo to the exhaust?) and 4" pipe for the remainder will get it there, correct??? I'm also taking it that a wrapped 2.5" crossover is the pipe that goes from one side of the engine over to the other where the turbo is??? And what is the 'wrapped'; as in heatsheild material????

What about the cat and the muffler??? I know you said you were thinking about putting one on, but which one do you think will give a nice note but not overly obnoxious when cruising down the road. I'd rather listen to the diesel clack and the turbo whine.:exactly:

Thanks for all your help.
-391

So a 3" Down Pipe (the pipe out of the turbo to the exhaust?)
Yup
I'm also taking it that a wrapped 2.5" crossover is the pipe that goes from one side of the engine over to the other where the turbo is??? And what is the 'wrapped'; as in heatsheild material
Yes again and its wrapped 3 times with header wrap (fiberglass i think) and then painted black.
What about the cat and the muffler?
I think i'll try the one that came with the D'max upgrade from Flo-Pro, things huge, i just hope you don't see much of it when its installed. Another reason for putting the muffler on will be to avoid tickets while driving, this truck is loud and then its REAL loud when its working pulling a trailer.
9 more days and i'm on holidays for a month!

New 4" Mufflers on.... lost some noise and found where some banging was coming from, had a mounting bracket broke allowing the pipe to hit the tranny x-over, all fixed!

Hey CR,
Did the muffler give you what you were looking for (noise down, turbo whistle up, and performance about the same)?????

Just curious.

Also, is there a particular 4" exhaust that you perfer? I see a lot of them for sale and everybody states "mine's the only one proven", "guaranteed", "don't be fooled by nock-off's", etc. I just need something that keeps exhaust sound down, turbo whistle up, and fuel mileage the same or better. I just can't see paying $500 when $300 will get the job done. I'm not planning on doing a lot of modifications to mine (just guages, PMD cooler, D-max fan, exhaust system, etc). Also, keep the cat in the exhaust.....or skin tha cat, LOL ! ! ! !

Thanks for all your help.
-391

I only drove it about 6 blocks so far, definately quieter which i guess in turn makes the whistle more noticable. As to performace i'm sure it will be unchanged, especially since its 4", tough to lose power with that size of pipe on a low HP 6.5.

Not sure i have a preference since its the only 4" i've had put in, install isn't bad though as its a D'max upgrade kit for a stock D'max to 4".

Mine was done at a muffler shop so costs were around $900 without the muffler, muffler was another $150 today. Good thing about it is it was a simple remove of one section of pipe and replace with the muffler, just undid some clamps, took out the pipe and clamped in the muffler. (band clamps)