Tuned @ Sea Level, changes with altitude.
09-20-2009, 05:50 AM
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Tuned @ Sea Level, changes with altitude.
My turbo GSR is tuned at sea level on 7 psi and I am in dire need of taking it on a road trip out of CA to WA.
The highest point of elevation during the trip will average around 4,000 ft around the CA-OR border.
If I just cruise through without ever going into boost, will I make it through?
What would happen if I went into full boost at that elevation?
The highest point of elevation during the trip will average around 4,000 ft around the CA-OR border.
If I just cruise through without ever going into boost, will I make it through?
What would happen if I went into full boost at that elevation?
09-20-2009, 05:56 AM
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Re: Tuned @ Sea Level, changes with altitude.
I found a thread that gave a little input.
Having driven the same car turbo @7psi at sea level and then within 2 hours driven it at 8000ft (summit) @7psi, I can guarantee you that the car is way, way faster at sea level.
While boost held at 7psi in both places (AVC-R), the car felt as if it were naturally aspirated at high elevation. This makes sense, since we're just running a 7psi pressure differential from atmospheric press, which is way lower @ 8000ft.
While boost held at 7psi in both places (AVC-R), the car felt as if it were naturally aspirated at high elevation. This makes sense, since we're just running a 7psi pressure differential from atmospheric press, which is way lower @ 8000ft.
09-20-2009, 07:20 AM
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Re: Tuned @ Sea Level, changes with altitude.
just keep an eye on you a/f gauge. Most likely it will read a point or too leaner than normal. I could be wrong though.
09-21-2009, 11:35 AM
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Re: Tuned @ Sea Level, changes with altitude.
Your ecu should correct for the altitude. Since the density is lower, the pressure is also lower, thus the ecu should put in less fuel based on the fact that the fuel get put in based on absolute pressure. That said, i live in Colorado and go from 5000ft up to 8500ft often and my experience is that the car leans out at the higher altitudes.
09-21-2009, 01:27 PM
#7
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Re: Tuned @ Sea Level, changes with altitude.
Your ecu should correct for the altitude. Since the density is lower, the pressure is also lower, thus the ecu should put in less fuel based on the fact that the fuel get put in based on absolute pressure. That said, i live in Colorado and go from 5000ft up to 8500ft often and my experience is that the car leans out at the higher altitudes.
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