boost?
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From: Where you come to vacation and go home on probation! Vegas!
Originally Posted by Warrtalon
No, occultworks has it right. 20psi on a 2g DSM t-25 doesn't flow half the air (CFM) of a GT35r at 20psi. Also, bigger turbos can flow higher boost levels more efficiently without blowing hot air, so you can't compare them when determining what boost levels you want to run on pump gas. The stock 16G on our Evo can't run 25psi on pump gas, because it generates too much heat, which causes knock and detonation. A GT35r can run 25psi without even breaking a sweat, so pump gas can be used in most cases.
Originally Posted by whitersevo
man it must be nice to get 93 oct... need to leave arizona get away from this 91... ^^^^^
Stock boost on an VIII is lower than a IX. Pretty sure its about 18.5psi compared to 20.2 or 20.3 or something. I forget. I plan on running 22psi very soon with a 93octane mail-in flash. You can run waaayyyyy more with stock turbo with meth/alky though if you choose to do so. My freind down here runs 28psi daily. And guys be nice, he is a newbie.
Originally Posted by TURBevO8
Come to PA, we have 94 everywhere!!!
Stock boost on an VIII is lower than a IX. Pretty sure its about 18.5psi compared to 20.2 or 20.3 or something. I forget. I plan on running 22psi very soon with a 93octane mail-in flash. You can run waaayyyyy more with stock turbo with meth/alky though if you choose to do so. My freind down here runs 28psi daily. And guys be nice, he is a newbie.
Stock boost on an VIII is lower than a IX. Pretty sure its about 18.5psi compared to 20.2 or 20.3 or something. I forget. I plan on running 22psi very soon with a 93octane mail-in flash. You can run waaayyyyy more with stock turbo with meth/alky though if you choose to do so. My freind down here runs 28psi daily. And guys be nice, he is a newbie.
05-06 = 20.3psi
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Joined: Jun 2006
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From: Phoenix, AZ
Originally Posted by whitersevo
man it must be nice to get 93 oct... need to leave arizona get away from this 91... ^^^^^
Originally Posted by iwantaEvoIX
well this is an old thread but i get to 15PSI and thats it. does not go any higher
Are you stock?
If not, what mods?
Has it ever shown more than 15psi?
Is that 15psi peak?
Is that 15psi peak in 1st gear or 5th gear?
Did you buy it used?
Come on, if you want help, you have to at least give us some details.
Originally Posted by Warrtalon
No, occultworks has it right. 20psi on a 2g DSM t-25 doesn't flow half the air (CFM) of a GT35r at 20psi. Also, bigger turbos can flow higher boost levels more efficiently without blowing hot air, so you can't compare them when determining what boost levels you want to run on pump gas. The stock 16G on our Evo can't run 25psi on pump gas, because it generates too much heat, which causes knock and detonation. A GT35r can run 25psi without even breaking a sweat, so pump gas can be used in most cases.
If this is the CFM theory and the GT35r is blowing cooler air than a 16G at the same psi, Does it equate to better performance running stock boost levels if that is all you want to do?
I know it could be kind of a waste of performance if you don't use the GT 35R to its full capacity but apples to apples are you getting better performance at the same psi or will the spool characteristics affect that? If I remember correctly the GT35R will spool later in the rpm range than the 16G correct?
WADAD
Originally Posted by WADADLIG_OZ
Here's a question for you...
If this is the CFM theory and the GT35r is blowing cooler air than a 16G at the same psi, Does it equate to better performance running stock boost levels if that is all you want to do?
I know it could be kind of a waste of performance if you don't use the GT 35R to its full capacity but apples to apples are you getting better performance at the same psi or will the spool characteristics affect that? If I remember correctly the GT35R will spool later in the rpm range than the 16G correct?
WADAD
If this is the CFM theory and the GT35r is blowing cooler air than a 16G at the same psi, Does it equate to better performance running stock boost levels if that is all you want to do?
I know it could be kind of a waste of performance if you don't use the GT 35R to its full capacity but apples to apples are you getting better performance at the same psi or will the spool characteristics affect that? If I remember correctly the GT35R will spool later in the rpm range than the 16G correct?
WADAD
Yes, you will get a lot more air mass running lower boost pressures on a GT35R compared to a 16G at higher boost pressures. This is because the larger compressor wheel and housing can move air more efficiently. The GT35R spools MUCH later than a 16G, it pretty much has no low-end / midrange on a 2.0 car, especially one with a stock engine.