Are you driving a 2006 325i 3.0 with 3 stage intake manifold? bolt on 3 stage manifold without flashing means no tune ??

論壇辯論真好看 

https://www.e90post.com/forums/showthread.php?t=472034

重點是 更新 階岐管後

重置適應值 或是( 適配 )  , 台灣 稱 編程

尤其是 岐管 要 適配

標題應該改成  Are you driving a 325i 3.0  with 3 stage intake manifold?  

以免和 325i 2.5  with 3 stage intake manifold 搞混

335imax 說

重置適配(編程)，尤其是岐管的適配，2000-3000RPM的那種動力不線性感 便消失

 My issue has been resolved! Using the Bavarian Technic tool, I was able to reset all the adaptations on my car, specifically the intake manifold adaptation. Once this was reset, the surges are GONE!

allmotorh22 回

因為電腦(Digital Motor Electronics (DME) controls) 不預期你有3階岐管，所以用蝴蝶閥(節流閥 )去干預它。

我都是在higher rpms 在飆，所以用wide-open一階岐管，配wide-open throttle(這是指VALVETRONIC)。詳 https://n52b30ul.blogspot.com/2020/04/n52b30m54b30.html

P.S. 雖然有了三階岐管--和諧的岐管，但是和DTC掌管的節流閥又產生另外一種失諧

Nope... and the issues your experiencing are due to the butterfly valves opening and closing when your DME is not expecting it to.

IMHO... 3 stage manifold is a waste. It would probably work better if you got a 330i DME or a tune with a 330i program...

or... put back your wide-open 325i manifold, because i don't know about everyone else but I only race in the higher rpms with a wide-open throttle. 

BudVlad  分享經驗

他努力地將330 DME 程式 弄上了 325  , 結果超沒力 只好再換回本的程式，然後送去 DS Motorsport in Germany 搞定。花了好多錢

P.S. 這也是我所想的，VIN CODE 無所不在，完全複製 一定會出問題。要COPY 也只是部分: 如MAP。但是我又想難道空然比的範圍有這麼小嗎? 用OPEN LOOP 也OK 啊