JWT S4 cams

[Steve Foltz]

3 What is the hp gain and Q lost compared to the S3.

I dont know the answers to all your questions but a have an older SCC with
the dyno charts for both the S3 and S4.  The dyno HP numbers don't really
show the difference.  It is more in the shape of the powerband that you see
a difference the S4 don't fall off as quickly after 6500rpm.  In fact they
hold an upward path until about 7000rpm the S3 start to go down in power at
about 6500rpm.

Peak Numbers for each as follows
HP=  S3 144 without JWT ecu, 145 with JWT ecu
Torque S3 128 with both ecu's
Average Gain S3 4400-7100=5.7hp No JWT ECU, 5.9hp with JWT ECU
Average Loss S3 2100-4400=1.0hp No JWT ECU, .07hp with JWT ECU

HP=  S4 145 with both ECU's
Torque S4 127 with both ECU's
Average Gain S4 4400-7100=6.0hp No JWT ECU, 6.2hp with JWT ECU
Average Loss S4 2100-4400=1.9hp No JWT ECU, 1.4hp with JWT ECU

Thats the numbers but I am sure not the full story.

Steve
98 Sentra SE