Renntech uprades, value?
the resonators. The upgrade boosts the horsepower to 550.

They do make some great products though, just overpriced.
Last edited by _AMG_; Sep 6, 2011 at 08:25 PM.

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I do find it ironic that a dealer may be charging a bit more for the car because it is modded considering if you were trading it in, they would most likely not pay you more for the mods.
I would think some very expensive wheels could add some value. Maybe KW coilovers. Perhaps a C/F hood if the stock hood is also available. But, generally, as it sounds like you know, power making mods do not typically add any value.
Mods like these might be the perfect reason for a buyer to want to pay a bit more for this car; that is, if the buyer was planning on installing mods like these at some point. In that case, this is a great deal. I mean, RT airboxes work (as has been proven) and they cost a pretty penny, so that alone could warrant a slight premium for the car's purchase price.

Don't know about used cars with the new car warranty based on time mileage.
I'd subtract for the dodgy wheels. Wheel and tire problems suck and are time sinks, possibly dangerous.




