Front Mount IC

answed half of my question.
BPV (ByPass Valve) vs BOV (Blow Off Valve) - What's the difference - - by Jeff Korn

BPV (ByPass Valve) - vents boost (high pressure air) back to the intake system before the turbo and after the air meter when you close the throttle under boost.

BOV (Blow Off Valve) - vents boost to the atmosphere when the throttle is closed.

Is ither one of them a must?

Not really a "must", butit is a real good idea, especially with a FMIC set up that has a larger volume of high pressure air in it than the stock system has, and if you run higher than stock boost levels.

I suggest a BPV to keep all the metered air in the system. A BOV vents metered air out, and motor will briefly go rich on a shift.

Everyone has their own opinion on the sound.... some like the noise of a BOV, but personally, I think it sounds "ricey".

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Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 21 psi, forced air intercooler, water injection, bypass valve, Ranger roller cam, subframes, etc., etc.. // 86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP nitrous, ignition, gears, suspension, etc., etc.... // 91 Escort: Bone stock winter car // 02 Taurus Vulcan(wifes car)

yea, the BOV does sound ricey to me also. I'm putting a BPV on my 85 TC i'm building for the dragstrip. I also have dual BPY's from two ford Turbo probes on my twin turboed 93 mustang GT (306 with dual T3's .60/.63 a/r's and a custom front mount intercooler. 16# of boost threw it and with the BPV's it sounds stealthy lol with the exception of the turbo spooling lol.)

[This message has been edited by TurboXbird (edited 07-06-2004).]

I have more questions btu i will ask them later after i run a search on here.