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TPI Specialties was founded by Myron Cottrell, a professional engine builder, who had bought a new Chevrolet Corvette in 1985 and was intrigued by the potential for improvement in its Tuned Port Injection fuel injection system.
Fiat – Controlled High Turbulence (1989–92, Fiat Croma CHT), StarJet engine, dubbed Port Deactivation (PDA), Variable Intake System on the 131HP 1.8 16V and on the 155 HP 2.0 20V Pratola Serra engine. Ford — Dual-Stage Intake (DSI), on their Duratec 2.5 and 3.0-litre V6s, and it was also found on the Yamaha V6 in the Taurus SHO.
However, single-point injection does not allow forming very precise mixtures required for modern emission regulations, and is thus deemed an obsolete technology in passenger cars. [1] Single-point injection was used extensively on American-made passenger cars and light trucks during 1980–1995, and in some European cars in the early and mid-1990s.
Engine tuning is the adjustment or modification of the internal combustion engine or Engine Control Unit (ECU) to yield optimal performance and increase the engine's power output, economy, or durability. These goals may be mutually exclusive; an engine may be de-tuned with respect to output power in exchange for better economy or longer engine ...
Port injection refers to the spraying of the fuel onto the back of the intake valve, which speeds its evaporation. [ 1 ] An indirect injection diesel engine delivers fuel into a chamber off the combustion chamber, either a prechamber or swirl chamber, where combustion begins and then spreads into the main combustion chamber.
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In mid-1984, the 3.8 liter LD5 engine was modified for transverse-mounting in smaller, FWD vehicles, and equipped with multi point fuel injection (MPFI). 1984-1985 models used a distributor and a distributorless wasted spark ignition system was added for all engines produced in 1986 and later. In 1986, it received sequential fuel injection (SFI ...
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