don, if u weigh its worth to functionality then its pricey..... tt aside... it does work.... i started usin the oem sumitomo 1s, then i changed 2 the 10mm red ultra... honestly no diff but when i changed 2 nology..... it does make a big diff esp at hi revs.... i used 2 struggle after touchin 7k rpm, after it was fitted, effortless till red line.... like akuma, i swear by it.... we r not askin ppl 2 buy it but 2 shed light as whether this stuff does work.......
juz like any another performance part, 2 fully utilize its capabilites, tuning is a must.... this cables carries a higher voltage... compliment it wif better plugs, fueling and more air.... u can figure out the rest..... hehehe
proof? i dun hav ler.... i dun think spendin 100 bucks on a dyno juz 2 find out whether the cables make a diff is practical unless oredi intend 2 dyno the car......
honestly, if it doesnt work i will b the 1st few 2 criticize it 2 the ground..... i 2 hate being taken 4 a ride......