PDX dyno results anyone?
11-01-2009, 11:58 PM
#17
11-02-2009, 12:41 AM
#18
11-02-2009, 11:57 AM
#21
Jarrad asks the owners on their driving conditions and what they're looking for in the tune. He will do a consertive tune first and will often ask the owners whether they want him to push the tune to moderate or aggresive. Most choose a safe dependable tune, some a little more, and few aggresive. If you ask him, Jarrad will always provide the pros and cons of each and an estimate of whp/tq. If asked, He will also give details of his approach towards your tune and reasons why, and also ways to increase performance (modifications) if needed.
11-02-2009, 12:40 PM
#22
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Dyno numbers are imortant though PDX's approach is more of a dependable and drivable tune w/ performance (i.e. smooth power band, increased turbo spool, reduced hesitation during acceleration, resolving knocking issues, etc.). You can produce higher whp/tq but with consequenses if not properly done (which has happened).
Jarrad asks the owners on their driving conditions and what they're looking for in the tune. He will do a consertive tune first and will often ask the owners whether they want him to push the tune to moderate or aggresive. Most choose a safe dependable tune, some a little more, and few aggresive. If you ask him, Jarrad will always provide the pros and cons of each and an estimate of whp/tq. If asked, He will also give details of his approach towards your tune and reasons why, and also ways to increase performance (modifications) if needed.
Jarrad asks the owners on their driving conditions and what they're looking for in the tune. He will do a consertive tune first and will often ask the owners whether they want him to push the tune to moderate or aggresive. Most choose a safe dependable tune, some a little more, and few aggresive. If you ask him, Jarrad will always provide the pros and cons of each and an estimate of whp/tq. If asked, He will also give details of his approach towards your tune and reasons why, and also ways to increase performance (modifications) if needed.
300whp is the most I've seen, which is the way past the edge of tune (12.0 AFR's at peak, 90% IDC's on 550cc's) for these particular VF family turbos.
11-02-2009, 01:51 PM
#23
Not saying that Greg's tune is crap. But I've seen 2.0L's with the same VF series turbo put down 280whp and 300+ wtq on a very fat (10.4 AFR) or conservative tune.
300whp is the most I've seen, which is the way past the edge of tune (12.0 AFR's at peak, 90% IDC's on 550cc's) for these particular VF family turbos.
300whp is the most I've seen, which is the way past the edge of tune (12.0 AFR's at peak, 90% IDC's on 550cc's) for these particular VF family turbos.
Last edited by ojichan sti; 11-02-2009 at 02:36 PM.
11-02-2009, 06:29 PM
#27
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All I'm saying is the VF48 is practically a VF30, VF34 minus BB CHRA, and VF39. And using it on a 2.5L with higher CR and bigger displacement can make more power than on a 2.0L at the same boost pressure. However Greg kept it conservative and reliable, but his torque numbers are still up there.
11-02-2009, 10:00 PM
#28
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All I'm saying is the VF48 is practically a VF30, VF34 minus BB CHRA, and VF39. And using it on a 2.5L with higher CR and bigger displacement can make more power than on a 2.0L at the same boost pressure. However Greg kept it conservative and reliable, but his torque numbers are still up there.
If you ever actually do research on similar setups and compare them, you will find that many VF48 setups of similar nature on both 2.0 and 2.5's run in the range of 280awhp/300ft lb median.
There is a whole thread dedicated on this. They are good numbers on a conservative tune so let the man like it.
http://forums.nasioc.com/forums/show....php?t=1617330
11-02-2009, 11:08 PM
#29
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Great discussion. At no point am I saying I'm any less than satisfied. The car runs great, pulls hard. I only have 16k miles on the car.. There's plenty of time to pinch the power. for now it's exactly what I wanted, and honestly a little more than I expected from what I have invested.
plus, it's not all about the numbers.
plus, it's not all about the numbers.
11-02-2009, 11:43 PM
#30
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Whoa, whoa, whoa, like I said, I'm not bashing Greg's tune, which is a great btw. When your torque curve is fatter than your hp, you are making power. But there's also leaning out the top and advancing timing or adding a pound or two to meet the torque curve. I've played with my tune myself and found what does what.
And I agree, numbers don't matter. PWR does...
