Speed Density?
Apr 15, 2010, 04:48 PM
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Speed Density?
I have been reading seeing in several threads about speed density. I would like to know a little more information on what it does? How does it help? What do I need? What will be the difference in power and drivability? How much would it cost me? From the looks of it it looks like its worth it but before getting this tune I would like to learn a little bit more about it.
thanks!
thanks!
Apr 15, 2010, 04:53 PM
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in basic terms, ur removing a restriction, ie the maf, its like removing the cat in the exhaust. I have a couple buddies running SD and drivability is stock and they gained a few ponies
Apr 15, 2010, 06:20 PM
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I'm very interested in this as well, but I also frequent high altitude (sea level-10,000ft). As far as I understand there is not a good solution to altitude changes with a speed density setup.
Apr 15, 2010, 06:32 PM
#4
The car itself will run the altitude changes quite well its the startup and intitial run that gives it problems, AFIK.
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Apr 24, 2010, 09:29 AM
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My drivability improved greatly with SD, I have a tial Q n kelford 272s which made the car difficult to idle. Your gonna need at least an omni 4 bar sensor, GM IAT sensor, ECU pins and most importantly a tuner that is very familiar with SD (my advice is diiirk since you already live in FL).
May 8, 2010, 05:01 PM
#12
I had been interested in running SD since some of the builds I was using as a guide were running it and I felt that it would be necessary to get the most out of a BBK turbo.
Turns out it's not really needed unless I plan on running something much larger:
So there you have it, straight from some of the most respected guys in the industry.
Turns out it's not really needed unless I plan on running something much larger:
Originally Posted by GST Motorsports
With a larger turbo SD will become an advantage.
Currently there is an issue in that the SD conversion does not use a barometer for calculations so the car will not run 100% correctly at varied elevations
Currently there is an issue in that the SD conversion does not use a barometer for calculations so the car will not run 100% correctly at varied elevations
Originally Posted by GST Motorsports
Honestly we only really see the need to run Speed Density on large frame GT35 type turbo's where a 4" filter inlet flows more than a OEM MAF can support, I would personally think for your setup you would make the same power with the MAF as you would by switching to Speed Density
Originally Posted by GST Motorsports
It would also make the car easier to smog down the road as well.
