North American Turbocoupe Organization

Turbo turn down
Timmy D Offline
Junior Member
Is it possible to disable my turbo or turn it down ?? My son is starting to drive, and HE does not need to be using the turbo. What would be the ramifications with this.?? Damage to engine?? To turbo ?? Tks... T.

shays88tc Offline
Senior Member
you could remove the arm from the wastegate that attchs to the diaphragm so the waste gate stays wide open, it won't make any boost but the car will be a dog without boost and could be dangerous for a new driver. you can't turn down the boost any lower than 10 psi though if you leave the wastegate alone. there won't be any ramifications to turbo or engine leaving the waste gate open, it will just be really slow.
Completion Date: Quarter to never..

bhazard Offline
Posting Freak
Yeah it will be slower than a 2.3 mustang or ranger.

At 10 psi it will probably be more like a regular family car. Especially if its an 87-88 tank.
88 TC, 170k, K&N, $5 Boostvalve, Stinger 3" ex., 3" Magnaflow, 3" Stinger tail, Zoom clutch
15.26 @ 86mph, 2.18 60' killed valvetrain & headgasket

Jeff K Offline
You cant really "turn down" the boost to under the waste gate activator setting without an adjustable arm, which would only allow a limited max boost reduction.

As noted above, at the stock WGA setting of 9.5 psi, the car wont be super fast anyway. You could always turn the base timing down to 4 deg or so BTDC (stock is 10 deg) which would help kill performance.
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized

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