[Gary Lohr]

OK, I chipped the truck with a towing chip which caused high EGT's in a hard pull uphill with the weight I am towing. I Then put on a Banks Monster exhaust which has gotten rid of the excess heat. However, this is giving me too high a boost with the free flow of exhaust. My boost will reach 28 lbs of boost on a pull uphill. This is resulting in my turbo squealing. I am afraid I will ruin the turbo if this continues. Is there a way of limiting the boost to under 25 lbs? I dealer told me when I was traveling that I shouldn't go over 25 lbs boost.

Thanks

 

[thedieselkid]

is your waste gate hooked up

 

[Gary Lohr]

I double checked it and yes there is a red tube hooked to the diaphram head which goes back to a common point that has a green tube that goes to the side of the air intake tube to the turbo.

 

[Pocket]

Going over 25#'s of boost you should be defueling automatically. Do you have a blow off valve or a boost regulator hooked up to your map sensor line?

 

[Gary Lohr]

No, nothing else hooked up..

 

[Gary Lohr]

Is there a way I can check operation of the wastegate? Such as pumping up the diaphram or using a vacuum pump on it? I think I read where someone said it was a pressure line. I thought it was a vaccum tube to the wastegate head. What kind of pressure/vacuum would be needed to actuate the wastegate arm?

 

[pristine]

IMHO, the best way to stay below 25lbs is to take your foot off the "go" pedal. I can go over 25 easily, but I limit myself to 25.
jgr

 

[FionaThe02PSD]

[ QUOTE ]
OK, I chipped the truck with a towing chip which caused high EGT's in a hard pull uphill with the weight I am towing. I Then put on a Banks Monster exhaust which has gotten rid of the excess heat. However, this is giving me too high a boost with the free flow of exhaust. My boost will reach 28 lbs of boost on a pull uphill. This is resulting in my turbo squealing. I am afraid I will ruin the turbo if this continues. Is there a way of limiting the boost to under 25 lbs? I dealer told me when I was traveling that I shouldn't go over 25 lbs boost.

Thanks

[/ QUOTE ]

The Banks Big Head Actuator is available and it is adjustable so you can limit your boost down to 25lbs but it is $200 and a couple of hours to install.

Without a Boost fooler you really shouldn't be able to go much over 24-25 without it defueling. (As previously stated in this thread)..

 

[Gary Lohr]

[ QUOTE ]
[ QUOTE ]

The Banks Big Head Actuator is available and it is adjustable so you can limit your boost down to 25lbs but it is $200 and a couple of hours to install.

Without a Boost fooler you really shouldn't be able to go much over 24-25 without it defueling. (As previously stated in this thread)..

[/ QUOTE ]

Maybe the chip is preventing it from defueling. I don't know, but it sure causes the turbo to squeal/flutter. No problem if I down in the 23# range, but at 25 and above, you can hear the turbo pushing against what seems like the thrust bearing causing the noise.

 

[FionaThe02PSD]

[ QUOTE ]
[ QUOTE ]
[ QUOTE ]

The Banks Big Head Actuator is available and it is adjustable so you can limit your boost down to 25lbs but it is $200 and a couple of hours to install.

Without a Boost fooler you really shouldn't be able to go much over 24-25 without it defueling. (As previously stated in this thread)..

[/ QUOTE ]

Maybe the chip is preventing it from defueling. I don't know, but it sure causes the turbo to squeal/flutter. No problem if I down in the 23# range, but at 25 and above, you can hear the turbo pushing against what seems like the thrust bearing causing the noise.

[/ QUOTE ]

That noise is NOT good. You might want to install a ATS ported housing to get rid of the surge before anything else. Contact Dennis at ITP Diesel he has them in stock and is a great guy!!

 

[Gary Lohr]

A coupld of questions on the wastegate:
1) I used a hand pump and found that pressure on the actuator head moved the wastegate arm. Where does it get the pressure from? If you trace the two tubes, the green goes to the air intake tube which feeds the turbo. I am assuming that is under vacuum. That tube (green) leads to what looks like a common pt with a sensor bolted to the turbo. This red tube goes to the actuator head. Where is the pressure coming from?

2) Can the arm be removed from the wastegate lever? I have tried to pry it off with no success. My thinking is to extend the length of the arm maybe a turn or two to get it to open a bit sooner to dump the boost pressure. Is my thinking correct?

 

[gregrob]

[ QUOTE ]
A coupld of questions on the wastegate:
1) I used a hand pump and found that pressure on the actuator head moved the wastegate arm. Where does it get the pressure from? If you trace the two tubes, the green goes to the air intake tube which feeds the turbo. I am assuming that is under vacuum. That tube (green) leads to what looks like a common pt with a sensor bolted to the turbo. This red tube goes to the actuator head. Where is the pressure coming from?

2) Can the arm be removed from the wastegate lever? I have tried to pry it off with no success. My thinking is to extend the length of the arm maybe a turn or two to get it to open a bit sooner to dump the boost pressure. Is my thinking correct?

[/ QUOTE ]

To build more boost you want it to dump boost later. The rod has an E-Clip on it.

 

[WUNDERHOOT]

dont do that dude. you want to make the arm a little shorted like 1/4 inch or 6 turns some say. there is a little bugger of a clip that hold the rod on. it is adjustable on late 99 and up trucks not the early ones. i dont know waht that black thing is the green and red hoses hook to sory.probably some computer crap.

 

[Gary Lohr]

[ QUOTE ]
dont do that dude. you want to make the arm a little shorted like 1/4 inch or 6 turns some say. there is a little bugger of a clip that hold the rod on. it is adjustable on late 99 and up trucks not the early ones. i dont know waht that black thing is the green and red hoses hook to sory.probably some computer crap.

[/ QUOTE ]

I am trying to get rid of the boost pressure. I am hitting in excess of 25#. In pumping up the acuator head it moved the arm outward of the head. Thus I am thinking that I want to lengthen it instead of shortening it. If I shortened it, wouldn't it take longer to open?

 

[WUNDERHOOT]

i think if you lengthen it any it will hold the valve off of it's seat and that might make it not spool up as good it will lower boost though. i make like 32 psi with my stock turbo i dont see a problem with it in almost 10,000 miles. hell if it goes in a few years i will just rebuild it myself for 100 bucks or buy a rebuilt one cheap. a little over 25 aint nothing to wory about.most of the time driving doun the road it is at 0 - 10 psi. it only spikes when you nail it . you need that boost to burn off the feul you are dumping into it. if you dont want to see high boost psi then pull your foot out of it some or detune the feul (less of a chip) but dont take it's air from it and still dump feul to it that aint good for nothing.the boost is relitive to the amount of feul it is geting .you dump more feul in it the exhaust presure increases and that makes more boost so you can burn more feul. so dont limmit it by it's air volume govern it with feul. that is a healthy way of doing it .but you can make power by dumping excess feul into a engine with out suplying it with the air needed to burn it all i just dont think that is very slick.

 

[KRP]

I'm pretty sure that shortening the rod puts more spring pressure on the wastegate and makes it harder to open. To lower boost pressure you want to make the rod longer and lower the spring pressure on the waste gate.

 

[jimmyendicott]

I can easily go over 25# of boost. With the ATS housing, I am not having any problems. At normal driving I do try to keep it under 25# of boost though. My turbo make no squealing noise.

 

[WUNDERHOOT]

i ment to say lengthen it. not shorten. i just edited it. i agree. the dude wants to make the rod longer to make less boost. i do not think this idea is so hot. i am trying to talk him out of it.

 

[Gary Lohr]

well, the problem I have (I love the boost by the way, great power) is the fact when I exceed 25# I get a squeal in my turbo. Everytime I hit it the wife is complaining about this sound. My fear is, I will ruin the turbo. This really started with the addition of the Banks Monster exhaust. One offered that I should upgrade to an ATI ported turbo housing. At $95, I can't afford it right now.. Plus, I want to be sure that it will do the job if I shell out that much money.

 

[jimmyendicott]

I paid $425 for my ATS turbo housing. Where did you find it for $95?