Why are Tial WG and BOVs unadjustable??
#10
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The only wastegate I can think of off the top of my head with an adjustment is the Turbonetic Deltagate. Its not a piece you want controlling your boost. I'd call it the Ford of Wastegates. The Tial BOV with the -9 psi spring is simply perfect on a Miata if you can VTA(I ran mine VTA on stock management for a bit and it actually did pretty well) The key thing is taking the vacuum signal or it from a large port on the intake manifold. I'm not the only member on here who has found the Tial to work perfect once the much too small vacuum ports are removed from the stock intake manifold and larger ones installed.
#12
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Do the vacuum port mods first.
Remove the intake manifold. Pull out the much too small pressed in vacuum nipples. Drill and tap the remaining hole 1/8" NPT. Go to the hardware store and get some 1/8" Npt male fittings with a larger barbed nipple on the other end.
Remove the intake manifold. Pull out the much too small pressed in vacuum nipples. Drill and tap the remaining hole 1/8" NPT. Go to the hardware store and get some 1/8" Npt male fittings with a larger barbed nipple on the other end.
#16
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I also just teed off the brake vacuum line. It's a bit better now.
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