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I had a ssqv on my evo... much to the chagrin of many tuners and forum jockeys. i liked it, car ran good and I had it tuned for it. I also ran an external wastegate dump so... LOL
i don't like the SSQV with the chirping insert in it. Co worker had one on his and his insert kept melting, so he fabbed up a metal ring to replace it. It doesn't chirp like other SSQVs do, just a simple "psssshhhh." i actually kinda like it.