need help on b20 it only rev to 6000 rpms on a stock LS ECU.i change the ECU to with another LS ECU and still the samething OBD1 wiring what can it be.....

 

B20B

• 1996-1998 specs
• NON-VTEC
• Found in: JDM Honda CR-V, Honda Orthia
• Displacement: 1973cc
• Power: 126 hp (94 kW)) @ 5400 rpm
• Torque: 131 ft·lbf (178 N·m) @ 4300 rpm
• Rod length: 137mm
• Compression: 8.8:1
• Bore: 84 mm (3.3 in)
• Stroke: 89 mm (3.5 in)
• Redline: 6300 rpm red line
• 1999 - 2000 specs
• NON-VTEC
• Found in: JDM Honda CR-V, Honda Orthia
• Displacement: 1973cc
• Power: 146 hp (109 kW)) @ 5400 rpm
• Torque: 133 ft·lbf (180 N·m) @ 4300 rpm
• Rod length: 137mm
• Compression: 9.6:1
• Bore: 84 mm (3.3 in)
• Stroke: 89 mm (3.5 in)
• Redline: 6300 rpm red line

Looks about right.

 

ecu throwing any codes?

 

Put a timing light on it and see how many rpm's it is spinning bc the tach could be off a little.

The motor will rev to what ever the ecu allows it to rev to.

 

Yes exactly as mentioned above...does not matter what the rated rev limit is...the motor will rev to whatever the ecu allows it to rev. LS ecu's go to 6900rpm...that tach is probably off. Hook up an aftermarket tach and see or a good timing light will give you your rpms.