Originally Posted by BlueStorm
you might want to have the car's AFR checked on a dyno, preferably before the cats, because these cars where detuned by Mercedes and run very lean, so you might need to get the ECU reflashed with the slk32 programming by a performance shop soon!!!!!!!!!!1
also NA cars are very lean runners and need larger injectors and a tune. MBZ probably used the C230 injectors on the NA 320. I know if I run it hard for 20 seconds in 5th gear the catalitic system gets real hot and gives off the tell tail rotten egg smell.
Thanks BlueStorm, This is an SRT6 and I'm planning on a tune. I like this Austrian tuner because the re-tune comes with a remote so you can switch it back for smog checks and warranty work. It's kind of pricey though. What do you think about those two issues. I live in CA, and I don't know if the re-mapping would show up somehow either for the state or for the dealer.
I just noticed you're in CA too. If you have a tune how does it work with smog checks.