Hello, I'm having some issues with my 98 GM 2.2, here's the DL...
Mods:
AEM CAI @ 2.75"
1.5" - 2.25" race headers
2.25" header back exhaust
Helix max turbulence throttle body spacer

Parts on the way:
IPP STAGE 2 CAM
IPP 7500 RPM TITANIUM,
VALVE - SPRINGS - RETAINERS
IPP ADJUSTABLE CAM GEAR

Ok my problem lies in the stock head I think.
Performance is currently week, in mid to high RPM's.
Really loud valves, sounds like a large cam'd V8.
Retainers feel week and sounds like / feels like floating valves @ 4500+

Car is in great condition, 170k, no motor problems other that this. All gaskets are good. Compression is good. Etc... No CEL's.

Give me some feedback on this, because I'm not sure yet. Oh BTW, this issue is 2-3 days old.

P.S: Give some feed back on if the purchased parts ( knowing the problem is the head ) should restore, increase and fix the problem. Thanks, Warren C.