hoonhore

got a tricky one for you, 99 with 238,000 on it, starts fine but when it's cold it has a rough idle. sputters and misses and sometimes backfires. upon braking it nearly stalls and acts like it's starving for fuel. i've changed the spider, fuel filter and done a tune up(cap rotor wires and plugs). also when turning left it damn near shuts off and runs normal when the wheel gets back to center. Could this be the two feeder lines to the cpfi or am i looking at a tranny issue. any help is greatly appreciated, thanks. also fuel pump is a three year old delphi unit, and no codes.