neoakaj

Looking to supercharge my 8, however I have a consern about my location. I live in Colorado Springs (6,035 ft) If I was to put a FI system on my 8 what should I use for a EMS? Im not planning on doing any major mods to what ever system I get. Also I do take trips in the summer time to Phoenix and California, will that be a issue? Am I going to need any tipe of custom mapping? If so is there anyone in the Colorado area that would be able to help me out? I am doing this as more of a cosmetic upgrade, I dont race my car, and I need to make back some lost power due to a vary large stereo setup.

bse50

You will probably be alright with a custom tune, which is needed on any FI application anyway
If i'm not mistaken turbochargers were invented to avoid power loss at high altitudes, where aeroplanes had severe power loss problems

neoakaj

I have heard that about the turbos being for higher elavation, but then again I was also told that they were used for european cars for better gas mileage. Are the custom tunes for the 8 going to be simlar to more "normal" cars? No one that I have come across in the Springs knows a whole lot about the rotarys. And I havnt really made any friends that have them One other quicky, would I benifet from a trubo more than a supercharger up here?

bse50

Understand that there are FI geeks in here that will answer way better than i do.
You can have some guys in here (MazdaManiac for instance) do a tune for your car for your specific EMS (like the access port, sold on MM's site as well).
all you have to do now is wait for some expert to log in and you will probably receive all the answers you need

Bastage

iTrader: (1)

Here's a link to the "AT specific performance mods" section:

https://www.rx8club.com/series-i-specific-performance-mods-97/

Also, talk to Phil's 8. He has a Pettit Stage II Supercharger setup with his AT RX-8.

Phil's 8

iTrader: (3)

Personal preference. Both will work well at any altitude. I prefer the supercharger. Ether will require a custom tune regardless of where you live. Using the stock ECU with the Cobb AP and a custom tune would seem the best way for you to go.

I have nothing but good to say about the s/c. You can PM me and ask specific questions.

zoom44

air force?

neoakaj

Are you asking if im in the airforce? If so no

MazdaManiac

iTrader: (3)

First of all, remember that a belt-driven supercharger will raise the manifold pressure by a fixed ratio, so its absolute pressure will be a function of altitude, while a turbine-driven supercharger (turbo) will always achieve its set absolute pressure, regardless of altitude (up to its RPM limits of its flow map).
In other words, a turbo set for 6 PSI at sea-level will also produce 6 PSI at 6000 feet, whereas a supercharger set for the same sea-level manifold pressure will produce less absolute pressure as altitude increases.
At one mile, the drop will be approximately 2 PSI.

As far as engine management choices go, if you use a system that employs a mass calculation (rather than a speed-density or pressure derived calculation), you will have the same tune regardless of altitude.
With my setup, I regularly go from my local altitude of 900 feet to up around 12,000 feet at Katchina Peaks and down to sea level in San Diego with no change in fueling values or loss of power.