I have my smarty on sw5 and i also have a boost elbow. The gauge will go right up to 24lbs and then drop a half lb or so. I have checked all the clamps etc. and found no leaks. Any idea what the prob. would be?

What kind of boost should i be seeing?

 

Is the boost elbow adjustable? If so is the set screw all the way in?

Is the boost gauge mechanical or electrical? If it's electrical it needs be plugged into the MAP sensor first and then the MP-8. The MP-8 does boost fooling.

I have my boost elbow set to 32 psi.

MikeyB

 

I need to update my profile. I took off the mp8 and am only running the smarty pod.
The screw is all the way in, and the gauge is mec.

 

Im pretty sure you need a Boost Fooler. My 04 was the same way and as soon as i added a Quad boost fooler i can see over 35 psi. I run my elbow at 33 psi max.

 

doesnt the smarty do boost fooling?

 

Nope... Like stated above^^ Looks like you need a boost fooler

 

I run just a Smarty and I can hit 38-40 psi all day. Stock turbo.

 

He has an 03 and Smarty loaded. That means the boost tables have been remapped to 45 psi to stop defueling and overboost codes.

The boost elbow should shut down the WG and boost is only limited by turbo capabilities. Assuming the stock turbo, that should easily be into the 30's.

Sounds like a boost leak or possibly a gauge leak. I would try crimping the WG boost refernece hose to see what that does.

 

Yup thats because you have the 04.5. 03 and 04 need the boost fooler with the Smarty. Easy to get one. Look here in the classifieds or go down to the local truck performance place and pick one up. I think i paid 50 bucks.

Just keep the pressure below 35 psi (stock turbo loses efficiency in this range). I notice a EGT increase when i get to the 35lb mark towing. Its all hot air LOL ! My 04 really likes 29-31 psi. I never see EGTS over a 1000 unless i see spikes over 35 which i don't let happen to often. I run my smarty on Sw3.

 

A BF on an 03-04 truck won't net you any more boost than stock. The WG is not electronically controlled.

Unless your making over 45 psi you don't need a BF.

 

could be the wastegate solenoid gone bad, had the same prob with my 04.5 and that was the fix.

 

I beg to differ. I have an 04 and had a Smarty alone with the a home made boost elbow. I could only get 24 psi same as stock. I had this exact same thread going and someone told me i needed a boost fooler. I bought one and now my truck gets over 35 psi. I have it set for 33 psi max. The boost fooler is the key !

The boost fooler does more than just control your "electronic waste gate" which the 03 and 04 do not have. The 04.5 has the "electronic waste gate" which is why you can get away with just the boost fooler (whether its a Quad Boost Fooler or a Smarty). If you look on Quad site it states it plain as day about the years and what is needed !

Get a boost fooler and and boost elbow and you will see.

 

I dug up this old thread. You can see guys were telling me that i had some other issue and all it was, was the lack of the boost fooler.

Take a read:

http://www.cumminsforum.com/forum/3r...t-elbow-s.html

 

BF does not control the WG on any years. Plain and simple, it clamps the voltage the ECU sees from the MAP at a low enough level it doesn't interfere with fueling.

The boost tables control over boost codes on all the years, thats it. Remap those to 45 psi and no issues. Don't need a BF till you go over that.

BF does not control the 04.5+ WG either, thats a seperate algorithm in the ECU that reads MAP voltage and opens the WG to keep boost at the set point. Crimp the boost reference hose to the WG actuator and you get the same effect.

Don't know what your problem was but lots of people make over 35 psi with no BF on 03-04 trucks.

 

My 92 12V makes more boost than that with a 16cm non-WG housing and same compressor. You shoulda listened to a few more people.

For the OP, you have a POD? Make sure you don't have the percentage turned way down. At 20% on SW5 its not gonna make much boost.