Yes they do. Please read.
This is the first paragraph from the pon cams section on he Tomei site.
Valve timing is opening and closing timing of intake and exhaust valve that are linking to the piston movement, and it is expressed with the crankshaft angle from TDC or BDC of the piston. When installing new camshaft, idle stability or low-mid range torque are dramatically charged by 1°degree of valve timing adjustment that controls overlap or valve closing timing. Valve timing is usually adjusted by engine-tuner who is working on with the test driver. So as PONCAM, the best duration timing and the valve lifts are decided from torque characteristic and acceleration data that is based on huge numbers of tests both on the bench actual running. Accordingly, dowel pin is shifted to the proper position at the same time.
You'll get the best valve timing without any adjustment but just a replacement of the factory camshaft with PONCAM.
Poncam
You will need to select the poncam tab once the page is loaded.
Now the thing is this is probably more true for a stock turbo etc. When you upgrade the turbo you whole power band changes depending on the turbo characteristics and then you will need to adjust the cam timing to suit the new power band etc. Tomei state similar down the page.
I wasn't misleading people I was just restating what Tomei claim.
I know I won't be bothered getting the adjustable cam pullies as for a few extra kw's I couldn't be f!@#k'd.
I just want the better/larger power band.
Cheers!