I just finished reading the intake shootout thread. It seemed like the extrude honed intake made decent power and torque. I have a stock tpi intake and was thinking of having it extrude honed instead of upgrading to an aftermarket intake. Does anyone have a extrude honed intake? If so what was the cost for the labor?

 

Level I PROCESSING ---
Includes a thorough processing and inspection of your part to provide a linear surface finish to maximize airflow.



LEVEL II PROCESSING ---
Includes hand-blending to specific gasket size prior to Level I processing. Automotive heads, intakes & exhaust manifolds only.



TPI Plenum
Level I - $159
Level II - $239

TPI Lower Intake
Level I - $379
Level II - $459

TPI Runners- per pair
Level I - $199
Level II - $279

TPI Combo (plenum,runners,intake)
Level I - $659

 

I got the level 1, after I matched the port size myself. I had it done to manifold and some cast runners. I can see where the better numbers come from. If you figure the smoother, the better, for air, it makes all the sense in the world! I'd go for it, it's a good investment too.