1999 Honda Odyssey (imported Cheng Lang 2.3 displacement) accelerates slowly at high speed! Seek the best.

The timing belt is correct. Have you ever seen a balance belt? If the balance belt is incorrect, the engine will not be balanced at high speed, and it will not feel stuffy at high speed.

How long has it been since the overhaul? The cylinder pressure is normal, but what about carbon deposition in the intake valve? Is it a lot? If it's a lot, it won't work. If you can't guarantee the air intake, how can you get great power?

I forgot that your car is equipped with VTEC system. If equipped with VTEC, please check whether the VTEC solenoid valve is working properly.

It seems that the original Odyssey didn't use electric spark plugs. It seems that it uses NGK. I can't remember, hehe

Even if it is electric, if the spark plug model is wrong, the high speed will be weak.

The transmission is good. How long has the transmission oil been changed? Is it for Honda? Stall test: What are the engine speeds of R and D gears? The hydraulic clutch plate slips slightly and can't get on the high speed!

I haven't touched RA3 for a long time. Leave me a message if you have any questions. Let's study it together.