best way to spend $2500
Assuming you are completely stock, I will spend my first $2K in a CLK grill, lowering springs, CF lip, tint, a V1 and you are still under $2K...
Modding the NA 55 engine is a rip off.
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1) Quaife LSD + X-Pipe (prob the cheapest mod)
or
2) Headers + X-Pipe + ECU Tuning
But if you can do both 1 and 2... you'll likely turn your baby beast in to a grown monster.
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Renntech ECU $1700 time is only a few hours
Kleemann ECU $1400 not with tax and that takes 3 days. I might be leaning to Renntech ECU, Sprintbooster and new rear tires.
I was able to talk the renntech dealer down to $1400 for The ECU out of pocket and i just have to wait a few hours to get the car back. That includes dyno run to see gains. And they are giving me renntech badges for the car for free (whoopee!!) I was also told if i went with another company for headers they would reflash the ecu if needed. This guy seemed to understand the C55 owners gripe about cost of parts for a $27K car. so so when i go with headers it will be most likely from a maker other than renntech to keep cost down.
anyone have any thoughts on using a sprintbooster with flashed ECU? maybe i should search that before i ask.
Seriously, you can spend a LOT of money trying to move a car into a different classification (from sport sedan to supercar) and it may or may not work. One thing is for certain, you will not get your investment back when you sell it.
That said, with the price of fuel, global warming hysteria, and the possibility of an all-Democrat government, we might not see a lot of HP increases over the next 5 or 10 years. Some of us were alive to remember the Jimmy Carter era. 5.7 liter V8s pumping out 150HP.






