turbo upgrade
#1
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turbo upgrade
I have a 1986 series 4 rx7 with a 1989 series 5 turbo engine. Everything is stock except for a microtech LTX-8 computer and exhaust upgrade.
What turbo would give me the biggest increase in power without having to modify the engine? What other modifications to the car would be necessary?
How much would fuel economy decrease, and to what degree can this be overcome by installing a boost controller?
What turbo would give me the biggest increase in power without having to modify the engine? What other modifications to the car would be necessary?
How much would fuel economy decrease, and to what degree can this be overcome by installing a boost controller?
#2
Listen to King Diamond.
iTrader: (4)
I've heard great things about the GT35R on stock-port engines. You'll need a T4-flanged exhaust manifold, and a beefed up fuel system with larger injectors. The Microtech should be good for your goals. And, most importantly, a good tune on a dyno from a pro tuner.
#4
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http://www.bnrturbos.com/2ndGen.htm
Your car will require the appropriate fuel and cooling system upgrades in order to support whatever horsepower goals that you have.
The fuel economy depends on your right foot and the quality of the engine's tune. Simply upgrading the turbo will not have a significant effect on fuel economy if the car is driven in the same manner. If you race the car you can expect as little as 8 miles per gallon.
The stock S5 engine is only good for about 500hp before it starts to have issues.
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Frisky Arab
2nd Generation Specific (1986-1992)
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08-18-15 05:30 PM