North American Turbocoupe Organization

YIPPEE WOO HAAA 1st drive!
RPM289 Offline
Got to drive the TC tonight.... fun fun fun. Does anyone have a video from the drivers view? I am not sure the turbo is working right boosts to around 10psi then falls off as soon as you stop pressing the gas. Been a long time since I have drove a TC (like 1988) so it may be OK not sure. Don't laugh too hard at me LOL Smile

"Do to others what you would have them do to you" Matthew 7:12

1985 Turbo Coupe, Stock for now...
1995 Lightning
1966 Mustang
1965 Prostreet Mustang
1969 Bronco

gadgetolds Offline
Posting Freak
Do you mean it falls off as in, stops building boost? or falls off like it spikes to 10 then fades. Is it an automatic?
1988 Turbo Coupe - A237 cam, K&N Cone, T3(.60-.63), 255 Walbro, Gillis BV, gutted and knifed intakes, ported e6, 3" elbow/dp to dual 2.5s, Kirban and spearco fmic.

Up next, ported head, t3/t4 upgrade.

tr_guy79 Offline
Senior Member
"falls off as soon as you stop pressing the gas"... This is normal. Boost readings are taken from the head side of the throttle plate. When you let off the gas, not only does the turbine wheel stop getting the heat and flow needed to create boost, you throttle plate is stopping it from coming in.

As far as the 10psi, need more details on the care (year/tranny/boost control method)

3rd Annual Philly Tri-State NATO Meet -

'87 - Range Roller 4* adv / 50 trim t04e / Ported E6 / Gutted Knifed intake / Stinger 3->2.5" / Adj. Cam Pulley / Warlboro 255

To Do: PIMP/MS2, FMIC, Bigger Inj

xcrunnerbd Offline
Posting Freak
Run that tank empty (or as close as you are comfortable with) and put some premium gas in it then switch your reg/premium fuel switch to premium aready! Smile

Oh, I saw 1988 and had a brainfart thinking you had a 88TC. I don't think '85s' have the fuel switch... so if you have an intercooler get a control valve and set boost where you want.

10 psi is roughly the setting of the wastegate actuator, that is normal for one that is properly working.
Project 13 sec. / 30mpg in '88 TC 5Speed : [email protected] / 32+ mpg

On The Car: KN cone, 2-stage [email protected] 15psi wired to fuel switch, Kirban AFPR @ 39psi, Walbro 255 HP FP, 130A 3G Alt., Full 3" Stinger Exhaust incl. cat. no muffler,

Shelf: .48 T3, ported E6, BPV

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