|Quote, originally posted by chromecarz00 »|
|If I understand corectly its expanding the size of the cylinder by shaving away part of the inside to increase compression.|
I think it has miniumal gains on our cars, def not worth the price.
people have done it themselves with a dremel, so its not hard, but time consuming and warrenty voiding are two main factors.
|Quote, originally posted by mofolicious »|
It's also idiotic.
When porting and polishing a head you want to use a flow bench, and make sure you actually increase flow. You also want to ensure that your intake and exhaust aren't inhibiting your airflow, or making your head flow better can be useless. This is something that should be done by an experienced machine shop who will measure airflow before and after to ensure that he's not just hacking away for nothing.