Need help with turbo

91GTturbo · 05-12-2001, 04:06 PM

I just purchased a 91 GT convertible with a single intercooled turbo. The car has been stored for the last 6 years after being purchased by a local collector. Driven less than 100 miles since he purchased it from the original owner. Car has 39,000 original miles. The previous owner was a 50 year old guy going through a mid life crisis who read about this kit and decided he had to have it.

I lifted the hood to inspect everything, and can you believe it was completely stock. The mass air, throtle body, injectors, I mean everything.

On to the questions. What size injectors, mass air and throtle body should I go with? I was leaning toward 30 lb injectors. If so, what king of fuel pressure should I be running? It does have an inline fuel pump.

Also, how much boost can I run on pump gas? I have every piece of paperwork since the turbo was installed, so if I didn't provide enough information, I'm sure I can find it.

Thanks for your help.

BowTie Eater 5 Liter · 05-16-2001, 07:59 PM

30lbers & 80mm maf

------------------
1988 Mustang GT, T-5
3.08's, No Smog Pump (Shorty Belt), Dumps At The End Of Stock H-Pipe, K&N Air Filter (Stock Air Box), Removed Air SilencerMy Stang
My Site (Not Done Yet)

exgmguy · 05-16-2001, 08:10 PM

I would say 30 or 36 lb injectors and any large aftermarket mass air meter. To handle fuel and spark chores I would have a reputable performance shop dyno tune it at around 8 psi with a wide band O2 sensor and a custom chip. No FMU, just a wider pulse width through the new chip.

------------------
1988 Mustang GT
12.0 @ 122
1992 BadAzz Wrangler
1993 Explorer

Mike_W · 05-17-2001, 12:49 PM

Hey exgmguy, whats this about wider pulse width on the computer chip. I'm going to get my car dyno'd soon and I have 30# inj. and 8-10 psi vortech with 6:1 fmu. I'm looking at different shops right now. Any shops around here? I was thinking Detroit speedworks or the place across from Total Performance that Lidio uses.

------------------
90LX, T-5, Vortech V2-SQ, Holley, Twisted Wedge Stage1, X-303

05-12-2001, 04:06 PM	#1
91GTturbo Registered Member Join Date: May 2001 Location: Valdese, NC Posts: 361	Need help with turbo I just purchased a 91 GT convertible with a single intercooled turbo. The car has been stored for the last 6 years after being purchased by a local collector. Driven less than 100 miles since he purchased it from the original owner. Car has 39,000 original miles. The previous owner was a 50 year old guy going through a mid life crisis who read about this kit and decided he had to have it. I lifted the hood to inspect everything, and can you believe it was completely stock. The mass air, throtle body, injectors, I mean everything. On to the questions. What size injectors, mass air and throtle body should I go with? I was leaning toward 30 lb injectors. If so, what king of fuel pressure should I be running? It does have an inline fuel pump. Also, how much boost can I run on pump gas? I have every piece of paperwork since the turbo was installed, so if I didn't provide enough information, I'm sure I can find it. Thanks for your help.

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05-16-2001, 07:59 PM	#2
BowTie Eater 5 Liter Registered Member Join Date: Nov 2000 Location: Maple Ridge B.C. Canada, The Best Place In The World Posts: 871	30lbers & 80mm maf ------------------ 1988 Mustang GT, T-5 3.08's, No Smog Pump (Shorty Belt), Dumps At The End Of Stock H-Pipe, K&N Air Filter (Stock Air Box), Removed Air SilencerMy Stang My Site (Not Done Yet)

05-16-2001, 08:10 PM	#3
exgmguy Registered Member Join Date: Feb 1999 Location: Utica, Michigan Posts: 2,631	I would say 30 or 36 lb injectors and any large aftermarket mass air meter. To handle fuel and spark chores I would have a reputable performance shop dyno tune it at around 8 psi with a wide band O2 sensor and a custom chip. No FMU, just a wider pulse width through the new chip. ------------------ 1988 Mustang GT 12.0 @ 122 1992 BadAzz Wrangler 1993 Explorer

05-17-2001, 12:49 PM	#4
Mike_W Registered Member Join Date: Apr 2001 Location: Sterling Hgts, MI, U.S. Posts: 64	Hey exgmguy, whats this about wider pulse width on the computer chip. I'm going to get my car dyno'd soon and I have 30# inj. and 8-10 psi vortech with 6:1 fmu. I'm looking at different shops right now. Any shops around here? I was thinking Detroit speedworks or the place across from Total Performance that Lidio uses. ------------------ 90LX, T-5, Vortech V2-SQ, Holley, Twisted Wedge Stage1, X-303