STS Rear Mount Dyno with 67mm and 76mm comparison
08-28-2013, 03:22 PM
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STS Rear Mount Dyno with 67mm and 76mm comparison Finally dyno'd my camaro. This graph shows the difference between the stock GT-67mm ballbearing turbo compared to a Turbonetics 7575 turbo on my 402ci low compression motor running at the same amount of boost (10 #)
This dyno run is #4 where after we were correcting the AFR's we noticed a loss in power, so the initial tune was reinstalled to bring the numbers back up to where they sit.
This dyno run is #4 where after we were correcting the AFR's we noticed a loss in power, so the initial tune was reinstalled to bring the numbers back up to where they sit.
09-05-2013, 02:29 AM
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Cam Motion Turbo Cam 228/222 (Duration 576/576) Lobe Separation 0.115
Should be good for 6500rpm redline and peaking around 5800rpm.
Not quite the build i was hoping for.
I have come across some information suggesting that the 2.25" boost tube from turbo to intake manifold may be a restriction causing the drop in power....and i've also come across information that suggests by adding more boost the horsepower curve should trend a bit higher.
So next season, i'll upgrade the fuel system...yet again and see where the fault rests.
Should be good for 6500rpm redline and peaking around 5800rpm.
Not quite the build i was hoping for.
I have come across some information suggesting that the 2.25" boost tube from turbo to intake manifold may be a restriction causing the drop in power....and i've also come across information that suggests by adding more boost the horsepower curve should trend a bit higher.
So next season, i'll upgrade the fuel system...yet again and see where the fault rests.
