OK OK, I stand corrected, regarding the race cam. I have heard of the two other cams you mentioned(c1 and c2) and you are indeed correct. The use of cams on stock engines do not require the JWT ECU, meaning your car will operate, and operate poorly especially with S4 cam, which has even greater loping idle. SE-R's have been known to have trouble with S3 cams if there was no JWT ECU installed. Your car will operate poorly in cold weather and will tend to cut off unexpectedly, so I definitely suggest the ECU for use with S4 cams I was told by Jim Wolf that their is no need to have your Ecu reprogramed with S3 cams I'm not sure about the S4cam, but I wouldn't be surprised if you did. The S3cam and the S4 is not the same............OUT!
STILLEN header,intake, JWT ecu(timing set at 15 degrees),and cams, GREDDY/TRUST exhaust, repainted all black, 99G20/Stock 15inch rims