CBRD secret sauce turbo upgrade!
But you don't understand that it has no meaning. These are stock-frame turbos - they will all taper unless you force them not to at which point you are blowing hot air. The fact that the Green tapers to 25psi or whatever does not mean it makes less power at 7500rpm. We keep telling you that it's not about the PSI at a given rpm, but rather the airflow it can sustain!! Sheesh.
The information you want is not answered by the question of "how much boost does it hold until redline?" Your real question is how much airflow can it sustain through the entire powerband. Don't focus so much on the boost number.
The information you want is not answered by the question of "how much boost does it hold until redline?" Your real question is how much airflow can it sustain through the entire powerband. Don't focus so much on the boost number.
But you don't understand that it has no meaning. These are stock-frame turbos - they will all taper unless you force them not to at which point you are blowing hot air. The fact that the Green tapers to 25psi or whatever does not mean it makes less power at 7500rpm. We keep telling you that it's not about the PSI at a given rpm, but rather the airflow it can sustain!! Sheesh.
The information you want is not answered by the question of "how much boost does it hold until redline?" Your real question is how much airflow can it sustain through the entire powerband. Don't focus so much on the boost number.
The information you want is not answered by the question of "how much boost does it hold until redline?" Your real question is how much airflow can it sustain through the entire powerband. Don't focus so much on the boost number.
Here are some of the pics I took of the turbo I STOLE from CBRD this past weekend. Chad, when you get back to the shop tomorrow, you will have my 9 compressor wheel in there with some blue spray paint on it. 
I'll be doing some butt dyno testing on it!!
By JasonMHunt
By JasonMHunt
By JasonMHunt
I'll be doing some butt dyno testing on it!!
By JasonMHunt
By JasonMHunt
By JasonMHunt
One cause Id like to know. Two cause I hear it will hold 30 then drop to 29psi by redline and just want to confirm and three Because the green from what ive been told will only hold 25 to red. If you ever look at a green dyno the power seems to drop alittle by redline will this be the same issue with the BBK. Im wondering if the extra power is made beyond 25 psi or if it is flowing more air through the entire power power band as well.
What 'redline' are you talking about anyways? If you're talking about fuel cut, then a 4g63 can be built to support anything from ~7500 up to 10,000+ RPM.
l8r)
sorry, in order to acquire a comp. map you have to test the wheel in a turbo test cell, which is about a million dollar piece of equipment...
unfortunately we do not have the capabilities to do this.... nor do the companies with the "competing" stock location turbos i believe...
cb
unfortunately we do not have the capabilities to do this.... nor do the companies with the "competing" stock location turbos i believe...
cb
sorry, in order to acquire a comp. map you have to test the wheel in a turbo test cell, which is about a million dollar piece of equipment...
unfortunately we do not have the capabilities to do this.... nor do the companies with the "competing" stock location turbos i believe...
cb
unfortunately we do not have the capabilities to do this.... nor do the companies with the "competing" stock location turbos i believe...
cb
j/k
Yeah, I've never seen a compressor map other than what gets published by the major manufacturers. All you guys could do is figure out at what point the turbo starts to surge and attempt to figure out maximum flow numbers.
l8r)
...and here I thought you guys were serious...
j/k
Yeah, I've never seen a compressor map other than what gets published by the major manufacturers. All you guys could do is figure out at what point the turbo starts to surge and attempt to figure out maximum flow numbers.
l8r)
j/k
Yeah, I've never seen a compressor map other than what gets published by the major manufacturers. All you guys could do is figure out at what point the turbo starts to surge and attempt to figure out maximum flow numbers.
l8r)
im not going to post information on a version of a turbo that may not reach production in it's current form, hence the lack of a formal announcement of the turbo... if that makes sense...
there are VARIOUS test units going out in the forthcoming weeks which will help us determine the final outcome.
cb
