SMA intake problem/Help

[ACR H2]

I tried everything; it still felt like i was losing a lot of power. checking all the connections for any leaks, nothing, everything looked great.
Thought it might be a bad MAF, thought i might have damaged it somehow, so i installed the stock airbox, figuring if it also acted up, it would be a bad MAF, but the stock airbox worked great, and solved the problems i was having.
Only conclusion is that its the SMA Airaid Air intake kit.
Dont know if i should give up on H2 INTAKE KITS, or try the BREATHLESS kit or any other kit out there..

2003 Yellow H2 Lux