I bought my Evo 9 used it came with some aftermarket parts. Most of the stuff is pretty easy to spot, but I am not sure if the cams are stock or aftermarket. My vacuum at idle is between -12 and -14. I removed the oil cap and took a picture. Thanks for any help.

 

Was JUST about to ask this same question haha

 

You normally have to remove them and look at the end of the stick itself. They will have some kind of marking or logo that should indicate the type

 

stock cams after warmed up at idle should be around -20 right?

 

Yes my car pulls -18 to -20 vacuum at idle.

 

If you are able to pull your tune chances are we can tell you if they are stock or not

 

If your only at -12 vac they aremt stock cams....

To find out what they are, you will have to at least pull the valve cover, of not take one of the cams out

 

I guess I will have to pull the valve cover to find out for sure.

 

Yes, then you can see the color code and engravings on the cam.

 

His gauge could be inaccurate

 

Thats true, im assuming his gauge is correct though....which could backfire

 

I pull well over 20 vac at idle on stock 8 cams..

My buddy with 272 hks pulls around 13-16 at idle.

 

As long as your gauge is accurate, I'm agreeing with the stock cams. But a little time in the driveway is well worth the peace of mind to me. Good luck!

 

I pull 16-19 on HKS 272s.

 

on a evo 9 what is the cold start idle at?