If the port job significantly improves airflow, tuning should be considered. Some TBs will bolt on and work fine, while others may require some tuning.
Are you planning to run a smaller pulley? I am not sure I've seen a ported/stock pulley'd blower in action. I think a pulley would optimize the porting results, and at that point a tune is a necessity.
Are you planning to run a smaller pulley? I am not sure I've seen a ported/stock pulley'd blower in action. I think a pulley would optimize the porting results, and at that point a tune is a necessity.
