Quote:
Originally Posted by GeorgiaTech335coupe
3b. I don't know if that would be cost effective compared to other 2.5" options. Most people want 3" DPs so they buy aftermarket.
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The 3 DPs makes sense, but when one is $1000 and the other is basically free.
Someone needs to do a dyno shootout with the same car same dyno same day and see the difference between: stock -> De-cated stock-> aftermarket 2.5-> aftermarket 3
I bet there will be no difference between de-cated oem and aftermarket 2.5
Quote:
Originally Posted by nailer335
Try using the NGK plugs and report on it, I'd be interested to see what comes of that.
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For performance oriented applications copper is the way to go because there are no alternatives other than iridium, oe it is.
For example the S4 comes with platinum from the factory but for my boosted application I am running colder Bosch Tri-Electrode Copper Plugs (F6DTC) very similar to the 335i plugs.
Every reputable engine builder for N/A and boosted dump the oe plugs (platinum iridium) and switch over to copper
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Daily: G30 M550i, Bluestone, JB4, 1 step colder plugs, 6WB retrofit
Winter Beast: Audi S4 4.2L V8, Supercharger, brakes, suspension & exhaust mods
Wifes': F15 M50d clone, DUDMD tune, WMI, MPBK
Gone: E92 335i N54 468rwtq