The Dyno Dip

[Frank De Simone]

I also hear a high that pitched tinging sound at 3,500 RPM then goes away
after that.
Same thing happens as the revs drop as it goes by 3,500 RPM.
I've checked my plugs and don't see any signs of detonation, therefore
concluded it's
not pinging. Am I wrong? Only seems to be apparent when there is a
load on the battery, i.e. lights on or AC. At least I don't hear it at other
times.
All on low throttle opening also. Timing is set at 15-16 degrees

Frank 93 SE-R Auto
KYB GR-2's
ST front and rear Sways
Stillen Tower Strut Brace
JWT POP and ECU
HKS Cat Back
Stillen 4-1 headers (new design)
Dunlop SP 8000 195X50X15
Enkei RPF1Wheels
Denso Iridium Plugs

-----Original Message-----
From: se-r-bounces at se-r-list.org
Matt Davis said:

> I recall before i installed my resonator that there was a high pitch
> tinging in that range..