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I have a 2005 350Z. I wanted to replace the springs and shocks, new exhaust, and eventually make it forced induction. I was wondering what were the best companies and parts to do this with. Or at least give me some kind of people to go to to trust to get me the best stuff. One more question, is a forced induction 350Z still reliable as long as you don't get to crazy with the boost?
 

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These are just my opinions:
go with coilovers instead of springs/shocks

if it's a street setup and you aren't going to track it, get Tein Basic coilovers

exhaust - does NOT matter as far as performance, get what you think sounds best to you, but, if you are going f/i, you need to make sure the piping is going to adequate to flow properly


what kind of power goals are you wanting? this will help determine what to go with

and how much do you want to spend?
 

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On suspensions (my opinion)
1. If you are going to track it and want the absolute best, get TEIN FLEX coilovers.
2. If you are going to street it or want to save some money on a track setup, consider TEIN BASICS coilovers or a good spring and shock package. I am going with springs and shocks. I plan to use the Koni adjustable (compression and rebound, not height) shocks and the RS*R titanium springs. The springs are more subjective. If you want to really lower the car, consider an Eibach. If you want to change the suspension dynamics but keep a similar ride height, consider TEIN, RS*R or many others. I am going with RS*R Titaniums because they are 25% lighter than stock and perform well.

On forced induction (my opinion)
1. Be prepared to spend a lot of money ($7000-10,000 or more).
2. SC or turbos will have basically the same affect on the engine (total power), will require similar supporting parts (guages, timing control units, fuel control units, etc) and will require very similar tuning (timing adjustment, fuel adjustment).
3. TUNING is everything on the Z. If you ran 2 pounds of boost on a poorly tuned system, you could easily blow a motor. Many people have learned the hard way that even a factory tune for there turbo setup can kill the engine (sometimes before it even leaves the tuners shop).
4. I highly, highly recommend a good turbo/SC package, a built motor, appropriate tuning, timing control, fuel control, gauges, a return style fuel system, and maybe an aftermarket plenum. For the built motor, look for at least rods, pistons, and new studs.

Long story short, big reliable F/I seems to require two basic things: lots 'o cash and lots o' tuning.
 
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