* worn turbocharger. If the turbocharger is worn, it will not be able to produce as much boost as it should, which will result in turbo lag.
* Leaking boost pipes. If the boost pipes are leaking, it will cause the turbocharger to lose boost and result in turbo lag.
* Clogged catalytic converter. A clogged catalytic converter can also cause turbo lag by restricting the flow of exhaust gas from the turbocharger.
* Bad wastegate actuator. The wastegate actuator controls the wastegate, which regulates the amount of exhaust gas that flows through the turbocharger. If the wastegate actuator is bad, the turbocharger will not be able to produce as much boost as it should.
If you are experiencing turbo lag on your 1993 Toyota Supra, it is important to have it diagnosed and repaired by a qualified mechanic.
