What is the highest boost level that a stock turbo will hold by redline?
What is the highest boost level that a stock turbo will hold by redline?
How much? Using which parts and I guess it would have to be COMPLETELY leak free, so a dye test would need to be done I guess... anyway, what's the highest you have seen... or if you are a tuner... tuned was it a EBC, EBCS or MBC?
Evolving Member
Joined: Oct 2009
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From: SL, UT
20.5 psi at 7000 rpm - 100% stock turbo, tuned MIVEC via EcuFlash, boost control via GrimmSpeed EBCS.
Some people who tune never recalibrate their EvoScan pressure formula for their current altitude, which probably causes slightly lower boost readings. I'd rather over-estimate than underestimate
Some people who tune never recalibrate their EvoScan pressure formula for their current altitude, which probably causes slightly lower boost readings. I'd rather over-estimate than underestimate
20.5 psi at 7000 rpm - 100% stock turbo, tuned MIVEC via EcuFlash, boost control via GrimmSpeed EBCS.
Some people who tune never recalibrate their EvoScan pressure formula for their current altitude, which probably causes slightly lower boost readings. I'd rather over-estimate than underestimate
Some people who tune never recalibrate their EvoScan pressure formula for their current altitude, which probably causes slightly lower boost readings. I'd rather over-estimate than underestimate
my car on a Dynapak. Spikes at 30psi and tapers to 19-20 PSI at redline
http://www.youtube.com/watch?v=e8kRGrSSSoo
http://www.youtube.com/watch?v=e8kRGrSSSoo
Evolving Member
Joined: Oct 2009
Posts: 438
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From: SL, UT
It's all in the mass flow, though, and at those boost levels I really wasn't seeing more than 230 load at 7000 rpm.
Evolving Member
Joined: Oct 2009
Posts: 438
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From: SL, UT
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I think I saw 21.5 when I visited sea level, but I can't remember for certain and probably can't find the log. I know 20.5 is what I was seeing up here before I swapped the BBX in, so probably almost 22 at sea level.
It's all in the mass flow, though, and at those boost levels I really wasn't seeing more than 230 load at 7000 rpm.
It's all in the mass flow, though, and at those boost levels I really wasn't seeing more than 230 load at 7000 rpm.
Design a more efficient head and you may actually wind up with less boost if it is flowing through the motor more efficiently, but make more power still.
Same goes for other restrictions such as exhaust, intake, etc... anything that changes / increases VE if you are already talking about wheezing the turbo out to the max.
Beings that a turbo can only hold so much air, the better question would be:
What is the Least amount of boost that one can hold at red line with the stock turbo?
That would mean that the engine is taking in as much air as it possibly can. If you want more pressure at red line, all you have to do is introduce resistance to air flow. Be it a more restrictive exhaust or a crappy head or smaller cam or a tiny intake manifold. All of those will easily increase pressure held at red line.
Pressure is not a measure of air flow, and air is what makes power. The more air + fuel that you ignite in your cylinder, the more power you make.
Hollywood proved this when he tuned is Fp Green. He made more power with less pressure do to increasing the amount of air that can actually enter the engine. ( air expands with heat )
What is the Least amount of boost that one can hold at red line with the stock turbo?
That would mean that the engine is taking in as much air as it possibly can. If you want more pressure at red line, all you have to do is introduce resistance to air flow. Be it a more restrictive exhaust or a crappy head or smaller cam or a tiny intake manifold. All of those will easily increase pressure held at red line.
Pressure is not a measure of air flow, and air is what makes power. The more air + fuel that you ignite in your cylinder, the more power you make.
Hollywood proved this when he tuned is Fp Green. He made more power with less pressure do to increasing the amount of air that can actually enter the engine. ( air expands with heat )
Beings that a turbo can only hold so much air, the better question would be:
What is the Least amount of boost that one can hold at red line with the stock turbo?
That would mean that the engine is taking in as much air as it possibly can. If you want more pressure at red line, all you have to do is introduce resistance to air flow. Be it a more restrictive exhaust or a crappy head or smaller cam or a tiny intake manifold. All of those will easily increase pressure held at red line.
Pressure is not a measure of air flow, and air is what makes power. The more air + fuel that you ignite in your cylinder, the more power you make.
Hollywood proved this when he tuned is Fp Green. He made more power with less pressure do to increasing the amount of air that can actually enter the engine. ( air expands with heat )
What is the Least amount of boost that one can hold at red line with the stock turbo?
That would mean that the engine is taking in as much air as it possibly can. If you want more pressure at red line, all you have to do is introduce resistance to air flow. Be it a more restrictive exhaust or a crappy head or smaller cam or a tiny intake manifold. All of those will easily increase pressure held at red line.
Pressure is not a measure of air flow, and air is what makes power. The more air + fuel that you ignite in your cylinder, the more power you make.
Hollywood proved this when he tuned is Fp Green. He made more power with less pressure do to increasing the amount of air that can actually enter the engine. ( air expands with heat )
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