three stages




But in the context of out W212's I say this:
1. ECU
2. Exhaust
3. Headers (gains are bigger than exhaust but most if not all do exhaust first)
Im not a super modder- I generally do BPU's aka Basic Performance Upgrades except on my GTR where I did a little bit more. For instance on my 997.2TT i have done the ECU mod which yields huge gains and the exhaust and now Im done there. On the W212 I have done the ECU and cut on the secondary cats and resonators (no gains) but still have to do headers for the big gains. I dont think I will do them though as the car is fine where its at and I have other rides which are much faster.




The ECU gains are pretty strong; circa 30-35 hp at the wheels.




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Thanks for your info Vic.
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