Boost Tube?
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Boost Tube?
I posted this in the wrong section earlier...Just kinda new here and can't search the forums for some reason. I am sure that this has been covered, but what kind of performance is achieved from the simple little mods like a boost tube $10 and a dual refief valve $40? They seem like such cheap and minor mods that I wonder if they are worth the time?
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Joined: Mar 2004
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The boost tube is an old school method of keeping the wastegate shut longer. I think you'll get the same results from just unplugging the red line at the wastegate, unless the actuator is weak, in which case the boost will just force it open, anyway. I'd say skip the boost tube.
The dual relief valve is a means of fooling the map sensor so it doesn't see over 22 or 23 psi, in which case it will set the SES light and defuel the truck for "overboost." The map regulator setup like I have does the same thing, as does the electronic version like sp-diesel sells. The relief valve or either of the other two options are only needed if you add fuel via injectors or a programmer/tuner/chip, because you'll then be seeing the higher boost numbers that will set off the map sensor.
The dual relief valve is a means of fooling the map sensor so it doesn't see over 22 or 23 psi, in which case it will set the SES light and defuel the truck for "overboost." The map regulator setup like I have does the same thing, as does the electronic version like sp-diesel sells. The relief valve or either of the other two options are only needed if you add fuel via injectors or a programmer/tuner/chip, because you'll then be seeing the higher boost numbers that will set off the map sensor.
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From: 21791
Originally Posted by John Schneider
I posted this in the wrong section earlier...Just kinda new here and can't search the forums for some reason. I am sure that this has been covered, but what kind of performance is achieved from the simple little mods like a boost tube $10 and a dual refief valve $40? They seem like such cheap and minor mods that I wonder if they are worth the time?
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