Experience turbo lag and power surge during road tests; check for significant oil accumulation at the turbo intake and intercooler connections (slight oil vapor is normal); and use OBD to read the real-time boost pressure peak to see if it meets factory settings.

Do not use a high-pressure water gun directly! The high-pressure water can instantly damage the fragile aluminum fins of the condenser, leading to a permanent decrease in cooling efficiency. We can only use a low-pressure air gun or a soft brush for surface cleaning.

Absolutely not. The U.S. DOT and EPA have strict import restrictions on non-compliant vehicles. Any Chinese used car that is not 25 years old and not produced to U.S. standards will face mandatory crushing and destruction upon arrival at U.S. ports. We directly reject such non-compliant orders.