PI swap done! but a little tick now...

[MyEarsHurt]

Well, I finished my PI swap today and started it up, and it started up first time Anyway, I did notice a slight ticking noise, just on one side (passenger) under acceleration between 2000-3000 rpm. I dont know if its exhaust or the infamous pi tick. I think my heads were built in 2004 though, so I dont know if its the pi tick. Anyway, anyone have any ideas? The gasket on the passenger side exhaust is new

 

[stangman]

is it only at those rpm's or is it constant?

 

[MyEarsHurt]

Its not constant from what I can tell or if it is, its louder as i accelerate. I havent taken it over 3500 rpm yet.

 

[stangman]

if you're not already make sure you're running 93 octane. you could be getting detonation due to the higher CR