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Old 01-21-2013, 07:53 PM
Ronin951 Ronin951 is offline
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Location: Northern Virginia
Join Date: May 2007
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Mein Auto: 2013 328i MSport
Originally Posted by namelessman View Post
So does it mean piggyback solutions can do 240HP-ish, but not 300HP? I wonder how well the piggyback ones "compliment" the factory ECU, if the ECU does not like the modified readings, would it throw a fault code or CEL?
My question was specifically 10:1 vs 11:1 on a 328 and I was told the gains would be similar and that there were 320 specific settings, which presumably just lowers boost. There is a different P/N for the exhaust on a 320, so an 11:1 328 vs 320 would probably have different dyno results. How much different I can only speculate.

I can't speak to CEL's, etc. That's probably better asked in a separate thread. I will say if the 2013+ 328's do have a different CR, the vendors will probably have to start asking customers the MY of their 328's.
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