Has anybody done these? Are they worth tuning or are there any real benefits tunign these?

 

My friend had wait4me do his. It took Jesse a couple times to get it right but man did it wake that little motor up. $158 well spent. But he also has the flowmaster exhaust and Mac Performance CAI!

 

the later ones 01+ use the same computer as ls1's so you get the same basic parameters ~500 of them with hptuners and can still do 1 & 2 bar custom OS's on them theres definitly alot of **** you can do & I would love to get my hands on tuning one just for the hell of it to see what I can get out of it.