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Forum: Zongshen RX4 07-20-2022, 12:03 PM
Replies: 102
Views: 14,869
Posted By pyoungbl
JFOliver, the spoofer i used was supposed to be...

JFOliver, the spoofer i used was supposed to be set up specifically for my bike. I'm not convinced that was actually the case. As for the intake, there was no obstruction as evidenced by the fact...
Forum: Zongshen RX4 07-19-2022, 04:35 PM
Replies: 102
Views: 14,869
Posted By pyoungbl
Bob, I can understand your thought process...if...

Bob, I can understand your thought process...if you have not personally experienced the problem it is suspect. With that said, I have personally experienced the effect of running super rich due to...
Forum: Zongshen RX4 04-22-2022, 03:55 PM
Replies: 102
Views: 14,869
Posted By pyoungbl
And you know this how? Did you check with an O2...

And you know this how? Did you check with an O2 sensor or some other tool, or are you saying so because "Everyone knows"?
Forum: Zongshen RX4 04-21-2022, 01:34 PM
Replies: 102
Views: 14,869
Posted By pyoungbl
x-pect?

x-pect?
Forum: Zongshen RX4 04-21-2022, 12:32 PM
Replies: 102
Views: 14,869
Posted By pyoungbl
The Delphi ECU is used on many small engines. ...

The Delphi ECU is used on many small engines. They probably have similar (if not identical) sensors but the actual map is going to be modified to work with the specific engine model, exhaust and...
Forum: Zongshen RX4 04-20-2022, 11:13 AM
Replies: 102
Views: 14,869
Posted By pyoungbl
You might find this interesting...from...

You might find this interesting...from Zongshen....https://www.youtube.com/watch?v=I6nzl8igRaY

Sadly, does not really answer your questions about how the sensors interact with the ECU. My...
Forum: Zongshen RX4 04-20-2022, 09:24 AM
Replies: 102
Views: 14,869
Posted By pyoungbl
Adjusting the resistance leaves one with the same...

Adjusting the resistance leaves one with the same problem as before, the ECU will respond with more fuel across the entire rpm range. A good ECU map will try to maintain the mixture at a steady...
Forum: Zongshen RX4 04-19-2022, 06:30 PM
Replies: 102
Views: 14,869
Posted By pyoungbl
As I understand the system, you are running...

As I understand the system, you are running closed loop in the lower rpm conditions and open loop near full throttle. The O2 sensor will try to bring the mix back to a preset level but these O2...
Forum: Zongshen RX4 04-19-2022, 09:42 AM
Replies: 102
Views: 14,869
Posted By pyoungbl
The RX4 has a throttle body with a stepper motor...

The RX4 has a throttle body with a stepper motor to control idle speed by adjusting air bleed to the engine. There is no screw adjustment anywhere on the assembly. Some riders try to fool the ECU...
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