So for those of you who saw my previous thread about my pump issues, you know that my fule pump is now hard wired into the battery.  Because of this, the engine can't mandate defueling if I exceed the set boost level.  So I'm planning on just getting a boost elbow since a boost fooler isn't really needed to trick my computer into thinking I'm at lower boost since it can't defuel.

 

Anyone see a flaw in this?  I feel like if this method worked, nobody would buy boost foolers.

Your raptor pump just supplies fuel to the injection pump, The injection pump is where the defueling occurs which is controlled by the ECM, so you would still need a boost fooler.

I concur

 

Ed

Your raptor pump just supplies fuel to the injection pump, The injection pump is where the defueling occurs which is controlled by the ECM, so you would still need a boost fooler.

 

 

I concur

 

Ed

 

Absolutely right. The MAP sensor is reporting the boots pressure to the ECM and sees pressures above 20 PSI and it starts cutting back fuel to keep from exceeding boost limits. So a boost fooler (minimum) or a actual performance module like Edge or similar would do much better because now you can calculate fuel tables above the ECM knowledge. This is why the wire tap is required. Other modules that don't tap the wire are going to be limited to 60-65 HP period.

Makes sense, I always assumed the asd relay tied into the fuel pump to starve the vp ijn order to defuel.  Thanks for the info guys

Makes sense, I always assumed the asd relay tied into the fuel pump to starve the vp ijn order to defuel.  Thanks for the info guys

 

ASD Relay just shuts down (not defuel) everything if anything goes way out of spec. Also ASD is only tied to the PCM has absolutely no connection to the ECM.

http://articles.mopar1973man.com/images/2ndgen24v/wiring/2002-Dodge-Wiring-Pg1.jpg

 

But as for defueling if any ECM sensor rise or falls from normal now the ECM commands defueling.