Straight from
stikiller.com The S1 cams are designed for those with the stock turbo up to the GT30/50Trim. These cams will not sacrifice any bottom end loss over stock cams; nothing but gains and will promote faster spooling of the upgraded turbos. Gains of 30-55whp (depending on Turbo) have been seen by simply bolting the S1 cams in. Designed for a rev range of 3000-8000rpms, these cams work well on the stock valve springs. 300-450whp camshaft. Idle is slightly ruffer than stock.
S1 Specs .
6008S1 ADV Duration Duration @ 1mm Peak Lift CenterLine
Intake 268 216 11.00mm 107
Exhaust 268 220 10.50mm 113
These cams are amazing for stock turbo setups. The midrange gain over the stock cams was incredible! I had these on the car for about 15k miles. I am looking to get $425 shipped.