Does anyone know how to mod the waste gate pn 03/04 5.9l cummins in order to use the boost fooler device???

 

all i did was put a clamp on the tube to the wastegate if there is no boost the open the wastegate it will not open the 03-04 trucks have a manual wastegate the 04.5 and up have a electronic wastegate

 

what kind of boost numbers are you seeing by doing this?

 

There are adjustable boost elbow on Ebay. I got mine for $15. Or you could just make one.

 

do you have a link to that elbow your talking about?

 

Boost Elbow, replace the x's with t's
hxxp://cgi.ebay.com/ebaymotors/DODGE-CUMMINS-TURBO-TURBOCHARGER-ADJUST-BOOST-ELBOW_W0QQcmdZViewItemQQcategoryZ33742QQihZ002QQit emZ120115834943QQrdZ1

 

You could also upgrade the actuator for better spring tension capacity. most come with adj. elbows.

 

okay with that elbow, what kind of boost pressure's will it be capable of and will it actually benifit the truck? thanks for the help

 

We have a new actuator that will control the boost much better than the elbows. It will help to prevent wastegate creep (premature opening) It will also allow you to build more boost.

One thing to remember as well is there is a bit of a misconception with boost numbers. It is not necisarily the higher the number the better. Every turbo has a range where they are designed to run. If you start pushing them past that range you will still create the pressure, but the compressor wheel is spinning so fast that the air that is being created is superheated. The hotter the air is, the less dense it is. The less dense the air is you end up not getting as much air in. The stock Dodge turbo is really only efficient to about 28-30psi, past that it starts making heat. So if your stock turbo is putting out more than 35psi you would definately be a candidate for a turbo upgrade.

 

Mine is about 32psi with the SMARTY.

MikeyB

 

When you say the turbo becomes more effient above 30 psi is this based on a stock truck ? I have my turbo going up to 40 psi and I see a big difference in my EGT's but my truck is not stock except for the tranny. I haven't experienced any turbo bark at all. There are people that I know that have been running 40 psi for 50,000 miles and haven't had a problem. I think if I had a modded tranny that was much tighter then I would have to upgrade my turbo(Next year I hope). I have been debating on backing off a littl;e on my boost but my EGT's are down and its running good. I'm afraid if I back down on the boost I will increase my EGT's because I want be pushing out enough air.

 

anyone else have any input?

 

Im with you AZDodge. I want to mod my gate so i can get 30-34psi out of it.

 

I put the boost elbow on my '03 and see 32-34 psi towing heavy. My understanding is the stock '03/'04 Turbo loses effeciency after about 36psi, so 34 is a good target. With my stock exhaust including the cat, I see 1200* pulling the grade with 10K. I'm sure the increased boost helps keep the EGTs in check.

 

Based on azdodges 2 threads and the answers given, I ordered booth the Quadzilla boost fooler and an elbow, both should be here tomorrow, so this weekend I will put them on and see what happens.