These are two JWT cam dynos superimposed on each other using Excel. The JWT S3 dyno is for my 98 SE-R. The JWT C3 dyno is for Rob Cadle's 91 SE-R. Both dyno runs were conducted on the same day at R&D dyno in Gardena. The tempaerature was between 76-79 degrees and the pressure was around 30 when I did my dyno. The temperature was around 82-83 degrees and the pressure was around 30 when Rob did his dyno.

The purpose is to show people who want to buy the C3 cams what to expect from these cams. The biggest variable between the two cars is the port design. My car is a low port (late model SE-R). Rob's car is a high port (early model SE-R). I have no idea what the impact of the port design has on the power output of the C3 cams.

The fuel cutoff comes early on my car since I do not have a JWT ECU.

My car has the following modifications:

• JWT S3 cams
• Hotshot G3 header
• Custom madrel 2.25 inch cat-back exhaust
• UR Pullies
• CAI

Rob's car has the following modifications:

• JWT C3 cams
• Hotshot G1 header
• Exhaust with stock crush bend mid-pipe
• CAI
• UR Pullies
• JWT multiple program ECU
• Adjustable cam sprokets
• C3 exhaust cam retarded 2.5 degrees

Most of the torque and HP loss from the C3 cams takes place below 3600 rpm. According to my calculations, the maximum torque and hp loss is 11 lb ft of torque at 3000 rpm and 6 hp at 2500 rpm respectively.

Surprisingly, there is overlap in the mid range between the C3 and S3 cams. The losses or gains are negligible.

After 6000 rpm, the torque and hp curves between the C3 and S3 cams diverge. The C3 come on hard at around that rpm. The S3 cams continue to gain but not as much as the C3 cams.

My S3 cams give their peak gain at 6250 rpm (147.1 hp). The C3 cams are only at 151 hp at that rpm. They still have a long way to go before they peak.

At my fuel cutoff (7100 rpm), the C3 cams gain around 19 hp over the S3 cams. Simply great. I do not exactly know what the C3 cams gain over the S3 cams at 7500 rpm since I do not have a JWT ECU on my car. But I can approximate a gain of around 35 hp at 7500 rpm.