its not A turbo lag. it's just "turbo lag"
turbo lag is what happens when a car with a turbocharged engine is
in the incorrect RPM range, as a result the exhaust gases are not
powerful enough to spool the turbo turbine up. Due to the low
compression ratio of TCed engines, this results in a much slower
increase in engine RPMs than in naturally aspirated engines. This
lag b4 the turbo spools up and while the engine feels lethargic and
slow is termed "turbo lag"