hi all need to know the pro & cons of having a dump valve fitted on a 03 wrx

 

When i bought my 93 wrx it had 1 already fitted (Blitz) and ran fine then over time it started causing the fuelling to get messy and started stalling the car at junctions,took it off fitted the recirc and the cars fine.
imo don't bother there are plenty of other bits to buy for your car.

 

Same here.

Took my VTA dump valve off last weekend and replaced it with the standard re-circ. The car runs so much better