model year. Lambda-Sond and the three-way catalytic converter became available in 1977 on California emissions vehicles only. In 1980, 49 state cars also received Lambda-Sond. The Canadian market had both carbureted B21A (again as a base engine from 1977 to 1984) and fuel-injected B21F engines. The B21F engine was revised with higher compression flat-top pistons in 1979 for increased output to 107 SAE hp or . The Bosch LH-Jetronic fuel injection system replaced the K-Jetronic on certain B21F engines in 1982, sharing less part commonality with the turbocharged B21FT engine. The B21 was enlarged to 2.3 liters and renamed as B23E for the Canadian market only with a K grind camshaft in 1981 and B23F for both markets in 1983. The B23E with higher compression ratio used the mechanical K-Jetronic and wasn't fitted with catalytic converter. In 1983, the B23E received an A grind camshaft from the B21A engine and switched to the normal B21F style head from the higher performance 405 casting used on the older B23E engines. Compression ratio was bumped up from 10.0:1 to 10.3:1. Horsepower dropped to 115 SAE hp from 136 DIN hp (127 SAE). The B23F used LH-Jetronic system and catalytic converter. All early 1983 B23F engines had the same compression ratio as the 1983 B23E, but, due to Chrysler ignition system usage, provided only 107 hp. After the switch to a Bosch distributor and coil, horsepower went up to 114 hp for the high compression B23F. In mid-1983, a lower compression B23F was introduced that had less horsepower (111 hp), but more torque (136 ft.lbs versus 133 ft.lbs, produced at 2750 rpm, instead of 3500 rpm). That version was used on M46-equipped cars only. B21FT, the first turbocharged engine from Volvo, was added to the 200-Series in late 1980 for the 1981 model year. The output was increased to 126 SAE hp or . Like the european B21ET, the B21FT used the K-Jetronic mechanical fuel injection system, but with Lambda-Sond and catalytic converter added. In 1982, the horsepower was increased to 127 hp. With some modifications to the fuel system, horsepower was increased to 131 SAE in 1984. The turbocharged engine did not have the intercooler until 1983 when the optional extra-cost “intercooler boost system” (IBS) was offered. The IBS became standard equipment in mid-1984. Despite the introduction of the new B23 engine, B21FT engine was never enlarged to 2.3 liters. Starting in