the most common way of tunning cars r on a dyno, but i been told my by many people that u can get more power from a street tune, because its better to get the car tune in the area where u live then to drive to the dyno. theres alot more stuff to it but i was wondering if any1 kno which is better(which one gives u more power?
the most common way of tunning cars r on a dyno, but i been told my by many people that u can get more power from a street tune, because its better to get the car tune in the area where u live then to drive to the dyno. theres alot more stuff to it but i was wondering if any1 kno which is better(which one gives u more power?
Where you live ? I don't get it. I "have" to drive 60 miles north to a place to get a pro-tune. Street tunes are great if you want to do it yourself and have that capability because you get it done on your own. I like the idea of leaving it to the professionals.
Ideally, both give the exact same power. Realistically, it's hard to do predictable high gear pulls in the real world. Therefor, dyno is generally superior. Also, dynos give you a number, street tuning does not.
Mosc beat me to it. Some places can adjust for your altitude also, that is if you know it and tell them that (if you have a long drive where altitude changes signficantly).
____________________________
Joshua
"Stage 2 WOOOOHOOOO, I love it."
If you don't know your altitude, just call up a local airport, (like the ones Cessnas and small aircraft fly out of, not your big airline airports) and ask them what their actual altitude and density altitude is. Because if you are at a high alt, say 5000' but its cold outside most of the time your density altitude may be 3000 feet, or vice versa for hotter. It all depends on the average outside temperature compared to the air pressure in inches of Hg (which gives you your pressure altitude) and the standard lapse rate for that altitude.
Now I know I may have lost some of you there, this should simplify. Standard lapse rate is 15 degrees C at sea level and decreases in temperature by 2 degrees for every 1000 feet. So at a pressure altitude of 5000 feet your standard temperature should be 5 degrees C (41 degrees F), if it is your density altitude is 5000'; if its hotter the air is less dense so the density altitude will be higher than 5000' and vice versa if its colder.
What the density altitude does for you is tells you at what the density of the air is as compared to a standard altitude. If you get it tuned for your average density altitude rather than your altitude you'll be spot on for your area.
But long story short your local airports should be able to tell you what your average density altitudes are.
Depending on the software used, a street tune can give you hp and torque numbers. They are calculated off the information from various sensors from how it was explained by my tuner.
To me, it makes more sense to do a street tune. It uses real world loads as opposed to the induced load from a dyno. Not to mention, most of the places around here only have 2 wheel drive dynos and those that actually have the AWD dynos are quite expensive for a tuning session.
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