ok so i can't afford all the upgrades like i'm wanting at one time however i do have friends that have friends. somebody gave me the stock downpipe off of a 01 sd is it possible to change the stock dp off my 97 with this 01 dp or would it be more trouble than its worth? second, the truck that still has the stock exhaust on it which brought up my first question but thats beside the point. i have the the k&n fipk cold air intake system and a TW chip on the truck and yes i know i'm bringin way to much air in to be pushin out very little through that tiny dp and the horsepower and mpg are being hampered because of that. but if i get on it real hard when i let off of the throttle if i do too much to fast it sounds almost like its pushin air back out the intake? any ideas what that may be? is it cause it still has stock dp and exhaust? if not what can be done to fix that? truck runs, idles, drives, and pulls heavy loads just fine. just hearin that air movin like that bothers me cause i'm not sure what it is. and another question when pullin a load of cows or equipment if you gouge on it and let off as in my foot slipped off the accelerator or pulled off the accelerator too fast it 'll shut down but if i ease off the pedal it won't. never had the problem til i put the chip on it. i'm thinkin it has to deal with the first two questions and the air movement. i think it has so much air shoved into the motor that it can't get out cause of the dp and exhaust and all that back pressure acts like an exhaust brake from hell. what do ya'll think?

 

The SD downpipe won't fit. Mine does that same thing when it builds a lot of boost and you let off really quick it makes that air sound. I have a 3" downpipe and 4" exhaust and it still does that. Our turbos don't have a wastegate or blowoff valve at all so the air can't go anywhere. I don't think it hurts anything from what i've heard from others.

Not sure on the truck shutting off part...

I'd keep an eye on that K&N... they like to let dirt through the filter and it'll dust your turbo. Bad news...

 

hmmm that may be the case but i still don't like hearin that sound when i let out too quick. think link below will take you to xtreme diesel's site and about halfway down the page is a little device thats made by BD that claims to be i guess somewhat like a wastegate or blowoff valve it says that its made for the obs powerstrokes as well. idk much about it but i've seen it on several other sites too. if it is what it says i'd be willing to pay that price in effort to protect my stock turbo until i can upgrade and get rid of that d*** noise. anybody else know anything about this gadget?

yea put some thought into it shuttin down and what i put in the first post about it is all i could come up with thus far. i'm hopin to get some input from someone who may have heard about this or seen it before.

as far as the k&n's go i've run em on every vehicle i've had and never had a problem. i've heard of that happening before and looking further into it they were talking about how only the filter had been upgraded. and it's true the filters don't seal right in the factory air box or at least mine didn't but it was on the truck when i bought the truck. i put the whole intake kit on it from k&n with the cone filter, new air box, new intake tube that runs pretty well to the turbo. ain't never heard of those lettin dirt in though. if they did i would venture to say that it could be cause of parts not being aligned correctly, clamps tightened too much or not enough, how often the filter is recharged, or the recharging method used. i always check my alignment and clamps, recharge it every 10,000 miles and follow the instructions on recharging. cause one time i rushed recharging it and it made a difference as to how it performed a small difference but a difference nonetheless. thats just my .02 on the filters.




Xtreme Diesel Performance - XDP Diesel Power Performance Parts - Turbo Upgrades

 

what sound are you hearing? is it a whistling sound then you let off and it sounds like a little pee shooter going off? those are normal sounds of these turbos. if you go to youtube and search up tatsch95psd you will find my page. there are various videos there of OBS psd's and you can listen up for the noise on those to see if my truck does the same sound as yours. these stock turbos whistle pretty good and when they let off on fairly stock trucks they are very high pitched. this is all normal like i said, it will hurt nothing and there is NO need for a wastegate on these turbos... and a blow off valve?!?! are you serious?! these things are big diesels, NOT little "tuners"!!! LoL. only rice rockets need blow off valves in attempt to make them sound cool. LoL

 

not to be mean but i've heard that before but it was about a tractor. me and my brother in-law were ripping some new ground down in the river bottoms. i was at the shop doin maintenance on the combine and he called me down to the field said he had a problem so i took the service truck down there. he said he didn't have enough power the tractor kept bogging down so i TWEAKED it for him. keep in mind this tractor has an oversize radiator and 5 inch chrome stack came from the factory with 235 horses and was pulling a 7 shank ripper which is fairly small. he got started ripping again and i was watching him go. within a few minutes i saw the tip of the stack turning blue and moving down towards the hood just a few minutes after that started BOOM!! yea you can guess what went the turbo and took the mounting flange with it. i pulled pieces of the compressor wheel out of the toolbox on the fender where they sliced through the side of it that takes a good bit of force. we picked up pieces and chunks of the turbo and its guts a good 50 to 100 yards from where the tractor sat when it shut down. and by the way it was a j*** d****. can't bring myself to say that outloud i'm an international man. wear it with pride on the inside of my right bicep.

if i really juice my truck up i'm wantin to put a wastegate, blowoff valve, whatever fits the application best to keep that from happening. i don't want compressor wheel comin into the cab with me. i'm not worried about it right now cause i'm tryin to finish college and all mods except a new dp and exhaust have been put on hold but its definitely in future plans for buford.

my question is with the noise. it sounds like air whoosing back out the intake tube. is it normal? is it detrimental to the turbo and or the engine? can it be fixed?

 

yes, its normal if its the whistling and then when you let off the go pedal it makes the noise your refering to. if thats the case then the air is going back up the intake a little, BUT this in no way hurts the turbo, engine, or intake system.

Now, not to be an a$$, but i'm going to state my opinion. you do what you think you need to in order to satisfy your mind. A blow off valve in my opinion would never be needed on a diesel engine. i have seen many big turbos without blow off valves run fine at high boost and work fine when they let off. blow off valves to my understanding is to control turbo surge.

Wastegates, again not needed. the truck didn't come with one and many aftermarket turbos do not come with them b/c they only bleed off boost that can be used in your engine. lots of guys wire their wastegates shut or like SD guys they unplug the vacuum line from the wastegate to force it to stay shut. still no harm done to the turbo, HOWEVER, wastegates are a good preventative measure against "overspinning" a turbo and doing as you said blowing the turbine wheel out the exhaust. but with our PSD's we have to have custom tuning when we get into injectors, turbos, fuel systems, HPOPs, etc. so why not allow the tuning to control boost pressures??

My stock turbo i know for a fact sees over 30psi before the intercooler w/ no wastegate or blow off valve. i get NO compressor surge at any time or any situation. pulling, let off from high boost, no surge.. also this turbo has almost 300,000 miles on it.... LoL

I appologize if i seemed like an a$$ in any way. i do not mean to come across as one nor do i wish to fire up arguements!!! LoL. heck thats why i hang out here instead of the "other" forums b/c they all argue everywhere else! haha. i'm in no way, form, or fashion an expert. those comments are just my opinions

 

if you dont add at least a downpipe to your list i would get gauges. the biggest problem is heat. and without the high flow DP if you have a chip you can get really hot really fast especially towing. my first mod was dp and 4" pipe. the stock dp REALLLLLY sucks! If you decide to go with pyrometer instead dont go over 1250* F long or it'll melt
That little gizmo is expensive too. i got my entire exhaust done professionally about 2-3 years ago for 650

Frat house Really??? lol

 

Thumper, I understand your concern. At my workplace we have quite a few large steam driven turbines and we have computer controlled surge protection. Mind you, with the one we're compressing to 2200psi with a flow of 175000 cfm. I don't think a PSD could handle that. Surge is indeed a concern, but I've actually never heard of a stock OBS turbo achieving that. Even with some pretty outrageous mods. I've never hit 30#, but I've gotten up to 28. Never had any troubles. These mills are SO hungry for air, that there's always room for more. If you had put a SD turbo on, then (as I understand it) there 'might' be a possibility for surge. Correct me if I'm wrong here guys. Before spending money on anything like that, read back through some more posts about boost and/or wait for more comments from guys who know these trucks far better than me.
I totally agree with tatsch about this forum. It is the best there is.

 

Pull the chip and test. My bet is most of the issue is gone.
I dont know how much fuel your chip is dumping.
But on a wag i would think you might build pressure at the oem
downpipe and cause turbo surge or stall. Not a good thing.
The PSD has an open intake system (no throttle plates).
Thus it makes no vacuum. Its why no intake blowoff valve is needed.
The closing of throttle plates make a vac which causes a turbo surge/stall.

Does the truck have a kitty?
My thoughts are a restricted kitty first, then the DP.
.02
Bill

 

On another note.
Be shure the EBPV system is working correctly.

Bill

 

tatsch no harm no foul bud. i may have came off *** one myself and if i did i apologize as well. and the thing about the arguging thats why i came here instead of somewhere else cause i dont like arguing. i see your point and i respect your opinion. i agree with you on the fact that either one of those devices would be letting out boost that could be used in the motor. in all honesty i prob gave that tractor a little too much juice. but after seein that tractor turbo which was bigger than the one on our trucks explode like that i'd rather not see my truck do that. i know that i would have my truck retuned for any more mods that i will make but i would prob still worry. the compressor wheel on that turbo wasn't the only thing that went to pieces it was everything right there the housing, the wheel, part of the exhaust manifold, a bunch of stuff regardless. and some of it was movin fast enough and far enough that it bounced off me leaning on the service truck or it landed on the flat bed or in the field around me. thats a scary feeling man when you hear a big boom and then stuff just starts raining down around you and you don't know what it is. i would say my opinion is the way it is because thats just one occasion i've things like that happen and would rather not see it again. but i tell you what i'll hold off on gettin a wastegate or blowoff valve til i blow the first turbo and i'll make sure that everytime a mod is changed i'll have it retuned in effort to not let it blow a turbo.

yea andy i live in a frat house at college i'm an AGR at University of Tennessee-Martin. one of my frat brothers is a member here on fte i can't remember what his user name is but i know it has 870 in it cause he was in my pledge class and he's my roommate. i know what you mean on the stock dp and yea i have been considering a pyrometer but if i'm gonna get a pyro i might as well get boost and tranny temp while i'm at it. hopefully before too long i can get a new dp and exhaust

madvan i can remember what it was like before the chip and it never happened. and it only does that on the heavy tow setting when the trans shift parameters are adjusted to make the truck use the torque of the motor to build up speed safely as in using 1st and 2nd instead of blowing right through them to 3rd. i think your definitely right on building pressure in the dp. correct me if i'm wrong but i had a class in thermal dynamics not long ago and the way the dp changes shape would cause the air to swirl and in effect work like a drain but when too much pressure is applied as in way too much water trying to flow down a small drain it backs up as in stalls the turbo. yes it still has the kitty and i'm really wantin to do any and all mods right not jerry rigging them like i have seen some guys do in the area i live in. but with that problem happening i almost want to cut the kitty out and put flex tube in there for the time being. my dad owns an electrical contracting business do you think it would be possible to use a section of emt as a kitty delete pipe? and i arc, tig, mig, and braze very proficiently and have my machinist certificate. fabrication is not a problem for me. i want to say my EBPV is but i couldn't tell you for sure. i'm prob just gonna unplug it and wire it open next time i'm under the hood to be honest.

 

When you are lugging a tractor that hard and don't have a pyro, your asking for trouble.
7 shank ripper is a lot for a 235 hp tractor.
The chrome turning blue is a sign that he overheated it.
Big farmer I know who runs 10k acres has pyro's in every tractor for that purpose. It's to expensive to blow turbos' because you were lugging it to hard.

I thought about a waste gate due to having a stickshift, but everyone here says its a waste of time.

 

i hear ya on that i tried to talk him into lettin me pull two of the shanks off and he wouldn't have it he just wanted more power so i said ok thats fine. yea i knew that about the chrome seen that many many times but i've never seen it run down the stack more than 5 or 6 inches except on that particular day over half the stack had changed colors. keep in mind i was not driving i merely worked on it. i think its pretty possibly he also hit a hard pan about the same time all that mess happened. its been a few years since it happened but i'm wantin to say i heard it bog down just a hair before it went boom. no pyro's on any of those tractors. of course i replaced the exhaust manifold and turbo on it and the stack non-chrome this time. our boss wasn't happy because he had heard the radio conversation and knew i had tweaked it but he also knew the driver of the tractor was a few fries short of a happy meal so he didn't say a whole lot.

your right though talyn thats alot for a 235 horse tractor. I wouldn't rip with anything less than 325 out of the factory especially out there in the mississippi river bottoms with all that clay in the ground. now when i got done tweakin she was pretty close to that but i can tell you i knew it wasn't safe because he wouldn't let me finish everything i wanted to do he kept hurrying me so i said fine patched it all back together and got in the service truck. taught that guy a lesson though for sure. that tractor didn't weigh enough to be pullin a seven shank ripper. it was a 4960 j*** d**** 4wd. YUK!!!

 

Whats wrong with John Deer?
They are good tractors.
Anyways.

Here in michigan, its mostly clay.
We rarely rip hardpans anymore.
Break it up once. and were trying to be more "light" on the tilling. dont drive on the field unless you have too.
So sometimes the tractors are pulling disk and a finishing tool at the same time. to keep off the fields.
The clay packs easy, and with vertical tilling you can keep it fluffy.

Breaking the hard pan is sometimes done when they first start using a field though, but they usually tile it right after that, so you'r never using a big ripper after that.

Moreborg (spelling on that wrong) plows are not used here very often cept for people who wont give up the old ways.

You chisle out corn stalks now.

 

If you blow the turbo on your truck it will be because of larger injectors, but i have only seen these turbos have a bearing fail stage 1's will be safe with the stock turbo for awhile. stage 2's and you will be asking for bearing failure eventually. may not be soon though. depends on how often you send it over 30psi. lol. i have sent mine over that plenty of times and my turbo is still tighter than a gorillas fist. i don't think you will have an issue with your turbo, however, if your cat is clogged thats a different story. pull the cat out and jam a piece of rod down there a few times and bust the insides out of it. or simply pull it out and weld in a piece of pipe to replace it.

I ran my stock dp with stage 1's for a few months with no problems. sure it got hot a little quick, but it ran fine