shodown220
Joined:
Aug 2010
North Carolina
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I can't find a definite answer to this anywhere through searching. I got my 88 turbo coupe running today, doesn't seem to be boosting much. About 9 psi is all I'm seeing. Car is a 5-speed, i thought they were suppose to be more about 14 or 15? Thanks for any input!
88 TC
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Blue Oval Bird
Joined:
May 2010
O'Fallon Illinois
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9 PSI is all you get on the regular switch setting. On the Premium setting you get 15 PSI in 1st and 2nd and then again after 4000 RPM in 3-5.
Check the fuel switch setting, it's probably on regular.
1988 Turbo Coupe: 5-speed, 75k original one owner garage kept miles.
MODS: K&N filter on the VAM, Gillis Boost Valve @ 16 PSI, Walbro 255 lph pump, Kirban AFPR, Full STINGER 3" turbo back exhaust with Magnaflow muffler, Motorsports 140 MPH Speedometer.
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Jeff K
Joined:
Apr 2001
Milwaukee, WI
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Later 88 had 15psi in all gears over 4K RPM. Just a minor LA3 programming change.
If switch is in Premium and still 9 max, the BCS (which most of us get rid of and use aftermarket boost control) is likely not functioning.
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.
11 Crown Vic Interceptor
14 Toyota Camry (wifes car)
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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shodown220
Joined:
Aug 2010
North Carolina
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Quote:Originally posted by Jeff K:
Later 88 had 15psi in all gears over 4K RPM. Just a minor LA3 programming change.
If switch is in Premium and still 9 max, the BCS (which most of us get rid of and use aftermarket boost control) is likely not functioning.
9 PSI in premium setting also. It also spark knocks a little in premium setting too, but not in regular. Previous owner told me he only runs premium fuel. Is the BCS a cheap or easy fix? I'm not going to go aftermarket boost control, just want factory settings.
88 TC
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Pete D
Joined:
Apr 2001
Northern OH
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The stock BCS is cheap plastic which get brittle/cracks. They are obsolete so used is all you are going top find. It the round thing with 2 vac lines and an electrical connector on the passenger side inner fender
Pete Dunham
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shodown220
Joined:
Aug 2010
North Carolina
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Quote:Originally posted by Pete D:
The stock BCS is cheap plastic which get brittle/cracks. They are obsolete so used is all you are going top find. It the round thing with 2 vac lines and an electrical connector on the passenger side inner fender
Well that sucks about the used thing. No idea where to find one at then.... any way to tell if its bad or bypass it or something?
88 TC
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UglyBird85
Joined:
Jan 2009
Norfolk, Va
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Just bypass it, get an aftermarket boost controller for $40(if that) and set it to factory boost level.
And when you get the itch, (which you will), turn it up a lil higher.
---Justin
87 Burgundy TC 5spd. K&N Cone filter-Walboro 255HP-.60/.63 Garret T3-Gillis @ 18psi.
SHELF: NPR FMIC-Ford Racing 42# injectors-Tripminder-
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shodown220
Joined:
Aug 2010
North Carolina
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Quote:Originally posted by UglyBird85:
Just bypass it, get an aftermarket boost controller for $40(if that) and set it to factory boost level.
And when you get the itch, (which you will), turn it up a lil higher.
I'm guessing there is no way to bypass it without an aftermarket boost controller, even for stock boost level? I would rather not go this route, but if thats my only option then where do you suggest getting one at?
88 TC
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UglyBird85
Joined:
Jan 2009
Norfolk, Va
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www.boostvalve.com
You wont be sorry.
---Justin
87 Burgundy TC 5spd. K&N Cone filter-Walboro 255HP-.60/.63 Garret T3-Gillis @ 18psi.
SHELF: NPR FMIC-Ford Racing 42# injectors-Tripminder-
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Blue Oval Bird
Joined:
May 2010
O'Fallon Illinois
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Quote:I'm guessing there is no way to bypass it without an aftermarket boost controller, even for stock boost level? I would rather not go this route, but if thats my only option then where do you suggest getting one at?
You can't get rid of the stock Boost Control Solenoid without replacing it with another boost controller, be it manual or other.
If you want stock level boost, you HAVE to use a boost controller.
Removing or bypassing the BCS will give you uncontrolled boost levels that will destroy your turbo and hopefully not your engine.
Go with the Gillis valve. It builds boost faster than the BCS allowing faster spoolup of the turbo. You won't be disapointed.
1988 Turbo Coupe: 5-speed, 75k original one owner garage kept miles.
MODS: K&N filter on the VAM, Gillis Boost Valve @ 16 PSI, Walbro 255 lph pump, Kirban AFPR, Full STINGER 3" turbo back exhaust with Magnaflow muffler, Motorsports 140 MPH Speedometer.
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