- Nov 18, 2006
- 1,987
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E-Manage first ? Meaning after port & polish, no need to re-tune ? :hmmmm:e-manage first,port polish need to remove head,take a lot of time,and if done wrongly will damage the head,as well as the low end performance,p&p also not cheap...
For polishing, I understand the need of for the grinding stones but for porting also use grinding stone ? You sure, bro ? :hmmmm:If you do yourself then it's cheap,but it will take some time to do it nicely.Just spend money buying a few grinding stones and new head gasket (or a top gasket set)..maybe a few hundred RMs.Do not overport the 20v head,you will suffer low end torque..no point you get power gain at 7k-8k rpm but losing 1-3k rpm for a daily driver.
Do not over port meaning how big ? How do you justify the port size ?
Please teach me, bro. Thanks.