今天在DSMTUNNER上看到了一篇簡短的討論！
Which compression ratio is best?
I am planning on running some new forged Wiseco pistons w/ either 8:1 or 9:1 compression ratio. The car is mostly street but may someday see some track/drag. I will be upgrading my 16G to a T3/T4 at some point also. Is a T3/T4 safe w/ 9:1? I plan to run somewhere around 25-29psi so I think 8:1 would be safer. ( and yes I will be using some ceramic coatings
咦？不正是我目前朝思暮想的問題嗎 XD
回答也很好玩
it really depends on wich turbo setup you have,t3/t4 dose'nt tell me much,and 29psi? on race gas i hope.
It depends on how well you can tune. 8:1 is more forgiving, but when you raise the boost to compensate for the power loss (as opposed to 9:1) you are back where you started. boost and CR are very similar, the difference is boost is more easily varied.
恩～果然解答了我目前的部分疑惑！沒錯！提高壓縮比跟提高增壓值其實是很類似的！以同一顆引擎的設定，一樣的渦輪、一樣的引擎！
如果作CR為8，增壓值為1.2跟CR為9而增壓值為1.6的兩種方向！到底何種為正確？
恩～似乎解決了我部分的疑惑，必須看「渦輪」跟引擎的排氣量。假設CAM原廠，引擎排氣量較小，加上渦輪的大小因素，明顯出風量的區域在
1.2的話！其實～適度提高壓縮比，會把引擎跟渦輪的最大效益展現出來！
我想，要是以目前設定來說的話，Maybe當初我的CR作9，Boost打1.3- 1.4左右！說不定得到的馬力值會更大也說不定。
倘若我現在換上的是TD06，恩～應該很明顯！！就是用高轉、Hi CAM加上降壓縮比提高BOOST ，來奪取最高馬力的效益！
好玩～真好玩～改車的確是個學問！
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