I had Altered Atmosphere install their angled plenum spacer in. I have to say that they were very knowledgeable and professional. Mike was kind enough to educate me what can be done to enhance the performance of my car. Work was done under an hour. I definitely feel the extra horsepower and torque. I know that it may not be a lot of power but it's definitely significant. The G also pulls a lot better at higher RPM and the engine sounds slightly deeper. Definitely worth the money for the power and the peace of mind that an ASE cert. mechanic completed the work. Jason gave me a tour of their facility and showed me a couple of the cars that they were working on. I'll definitely be back for the ECU Flash.

 

I love Altered Atmosphere. If I ever don't have the time to do something myself I take my car there. Bunch of really good and knowledgable guys. I want their new exhaust, but they only make it for the Z.

 

If you are talking about there true 2.5" exhaust, I saw them installing one on a G35 and a FX35. It looks like a pretty sweet setup. You can see it on there website: http://alteredatmosphere.com/home/

 

Looks like they're about a 40min drive from me. I'll have to check them out sometime soon. Seems like I can't go wrong with a plenum spacer as my first performance upgrade.

 

Has anyone tried the ECU reflash? Almost $600...is it worth it?

 

ecu reflash is worth it when you have enough mods...but if you just have an intake or something then dont waste your time...i would do this when youre done modding

 

If any of you guys have any other questions, please feel free to PM me.

 

I was actually talking about:

http://www.alteredatmosphere.com/mm5..._Code=350Z_EXH

I know I will have to be going FI in order to run something this agressive.