performance
 

On almost every diesel performance site I look on they are selling what they call a boost increase valve. Its made by PPE an only cost $30. It sounds to good to be true. Anyone have any info on it?

Its good for adding a couple extra Lbs of boost definitely. Those couple extra Lbs doesnt always mean HP though....

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Alot of the time its just HOT air that doesnt always help

Ok I was wondering.

I was lookin at getting a cold air intake. What would be the best? Most people around here run K&N

I had k&n. performance went down. I got an air raid, it works well

S&B is my personal favorite

The boost valve helps if you have a tune, woke mine up. As for intake do not get k&n! I run a bills custom intake its awesome! Great sound.
Other mods for airflow that help quite a bit is porting your intake horn, or buying a kit that has intake and horn together.

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Intake over boost valve. Boost valve doesn't help like it was said till really you put tune to it. Intake turbo horn is nice mod too. Mine sounds wicked with the intake and the intake turbo horn.

I'm runing my edge on the towing setting all the time. So not a lot of tuning in it. Where can i look up bills custom intakes?

blow off valve
 

i have a 2002 duramax and was wondering about putting a blow off valve on it...will this hurt anything? i have heard that it doesnt do anything to help it...honestly i like the sound....but i am worried about doing any kind of damage. any info on this?