verge

My goal was: Keeping the engine stock, can I get 150 hp out it and knock down 30+ mpg on the highway? I read the posts about EA82T fuel mileage where the majority of posters get between 22 and 26 mpg - most with a stock setup. Since I would have to "find" another 35hp over stock, I'm sure that the MPG numbers would drop even further. I really liked the idea that the car is light weight and only has 12500 miles on it. I can't imagine replacing an engine that is practically brand new. Somewhere, I am missing something: My 88 Tbird weighs over 3400 pounds, is pushing over 250 hp at 18psi and can get 30 mpg on the highway. How is it that a MUCH lighter car with .5 liters less displacement and 135 less horsepower can only muster mid 20s for mpg. I'm not slamming Subaru, I just wanted a fun daily driver that would be a blast on the dirt roads. I had a 127hp Mercury Tracer LTS with a close ratio 5 speed & 4 wheel discs, the car was awesome on dirt/gravel roads! I was hoping to build an even better car without breaking the bank. Anyone interested in an SPFI 87 GL 2wd 5sp with 12500 miles. Make offer!

I don't have any probs with the Tbird. I was just using it for reference. When the injector opens, fuel at a higher pressure will flow more giving the same effect of a bigger injector at a lower pressure. My goal is 30+ mpg and 150 hp. Don't care about the idle or if the ac works. Just wanna have some fun with it. I think 8 psi on the stock turbo should be close. If I can't get it to work, I'll have to put the car on the bottle. Has anyone on here successfully Turbo'd the SPFI using the base motor/heads?

I have an 88 Thunderbird Turbocoupe and have upped the boost from 10psi to 18psi. The biggest problem is that the engine starts to starve for fuel. You can add higher flow injectors or you can increase the fuel pressure via an adjustable fuel pressure regulator. If I add an adjustible fuel pressure regulator can I get around the SPFI shortcomings? With the SPFI heads what would be the max boost I could expect to achieve?

Hi Y'all, You guys ROCK! I have definitely found a new home. My story: Three years ago I bought a GL 3 door 5spd at an auction for $30.:cool: The doors were locked and windows were filthy on the inside so nobody could see that it had 12,470 actual miles. For $30 bucks, what the heck! This would be my first Subaru and I have really loved their innovative cars/trucks. Well, sitting around did a number on the hood, rear seat tops and fuel tank. The original tires have dry rotted from not being on the road since the early 90's. The only gauge that worked was the speedo the rest were frozen. I bought a donor car for $100 which has provided most of the parts I needed for the project. After some minor wrench turning, it is running decent with no smoking or leaks. All the gauges have been fixed or replaced. Where I am: I put on new plug wires, changed the oil/filter, new air filter. The SPFI is real slow to build RPM. I think Maybe the TPS needs cleaning but don't know for sure. Where I want to be: I would love to terrorize some of the local dirt roads so I bought a turbo from an '87. I have the air box, intake runners/tubes, waste gate actuator and the exhaust pipes. I'm planning on gutting the cats, installing an import style (at least 8" outlet pipe ) muffler. I wanna get a K&N cone filter but will have to see if I can get the turbo working. I haven't found much info on the SPFI to TURBO conversion. Any suggestions and pictures would be greatly appreciated. Will the stock pistons be too much compression for the turbo? Anyone install an intercooler? Keeping the engine stock, can I get 150 hp out it and knock down 30+ mpg on the highway? Jackie aka Verge