i am haveing some weird noise come from my engine i have a 2005 tc supercharged 9.5 pully the noise comes in a 3k rpms and dies off after 4500k any ideas i just put on headers and replaced the gasket so not an exaust leak i am also running a weapon r supercharger cai plz help
chould it be rod bearings?

 

Were going to need more info than just "a wierd noise" here and there. Some things you should probably share:
What gears? 1st? 5th? All?
How hard of acceleration? almost none, full boost?
Did it start right after you installed the headers?
What kind of noise is it? Rattle? Grinding?
Tuning? Who done it?<- lol, standalone? Stock dealer tune?
I'd also like to know if the car makes this noise sitting at a stop at 3-4.5k rpms. Have someone sit inside of the vehicle and rev it up. If you hear the noise pop your hood and try to find where it is coming from.

 

you are using 91 octane minimum right?

 

all gears
dosent matter just a 3k to 4.5krpm
yes
knocking
fully tuned piggyback
and yes sitting u can hear it at 3k rpms

 

yes i am not stupid but is it not 93?

 

91 is the minimum, but most gas stations seem to have 93 octane.

just thought i'd check.

did you get the trd reflash? or did you only tune with a piggyback on the stock ecu?

do you know your a/f when it is knocking?

 

Drax has a good point. I'd definitely check your afr's during the knock. Also, is the engine pulling timing at all because of the knock? See if you can datalog and get some more info from the sensors.

 

check your belt tensioner.. see if that is messed...