installing boost defi boost gauge, need some help

~JoJo~

Member
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2007 Mazdaspeed3 True Red GT
Hi: So my buddy Calvin got me a defi electronic boost gauge and boost controller. We'll be installing it tomorrow, and just wanted to know if there is any suggestion. I wonder if there is a place we can find a how-to or a digram for the wiring.
 
well there are three wires, ground goes to any good grounding point under the dash near steering colum and then there is constant 12v which i believe is the large yellow wire in the ignition harness and then the turn on wire will conect to the large black/red wire in the ignition harness. and you will get your boost signal from the vacum line that goes to the stock BOV, just T into it. Good luck mang!
 
Spaking of install help i bought the greddy v2 electric boost gauge and all the damn instructions are in japanese. It's the only language in the world that i don't speak, go figure. lol. Anyways where should i drill the manifold for the vacuum line?
 
Spaking of install help i bought the greddy v2 electric boost gauge and all the damn instructions are in japanese. It's the only language in the world that i don't speak, go figure. lol. Anyways where should i drill the manifold for the vacuum line?

NO DRILLING!
just T into the big vacuum line going to the BOV right under the black plastic engine cover.
 
the install is already completed. The only thing I lack now is a gauge pod, which is on its way from feebay, since I can't find anything from any local store (so hard to believe even Kragen or autozone doesn't have them)
 
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not yet. I am waiting for the gauge pod to arrive, hopefully tomorrow. Then I'll shoot some pic and hopefully make it to the "best ms3" contest haha
 
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