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I actually found a 3.5" velocity stack which I think im going to get. I dont think anyone here is using that so ill be the first . If the srt ecu doesnt like the extra air flow that these things are supposed to provide then ill ditch it and get the neo.
fyi the stack alone on a h22 honda provided an extra 10hp.
APexi power filter has a vstack built into it. Vstacks are nice but some are pricey and others are cheaply constructed. They are good power adders though.
I have a Injen Intake for my GS300. I got it used and I want to replace the filter. What size am I looking for and what is the best bang for the buck? (OP-sorry to hijack it)