HOW not to blow up your Engine Guide
#21
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12:1 means 12 psi of fuel per pound of boost. The vortech doesn't always run exactly at this ratio, but it will still be over fueling your setup with an aftermarket HP pump. Buy the 6:1 or get a Begi AFPR, or better yet, go standalone.
#26
Unless your running low boost (5-6 psi or less), using a high ratio disc in the vortech will have your fuel pressure pegging out at 130-140 psi. I tested it myself with my FP gauge. With the 190HP fuel pumps, the best disc is generally the 4:1 or 6:1.
I ran it with an 8:1 disc and it was pegging 130 psi all the time. Car was bogging big time at high boost.
Sorry to hijack, back on topic.
I ran it with an 8:1 disc and it was pegging 130 psi all the time. Car was bogging big time at high boost.
Sorry to hijack, back on topic.
#27
No one is knocking the greddy turbo, it is capable of decent power. What people are saying is that PSI does not equal the same power output from turbo to turbo. 15psi on the greddy can equal 275hp depending on mods and tuning. Whereas a larger or more efficient turbo could reach 275hp at 10 psi. It's not how many PSI you run it's how much CFM you are running through any specific turbo. The greddy is only efficient up to 15 i believe, after that it is past its compressor efficiency.
#29
But PSI doesnt vary from turbo to turbo, correct? I understand that the power output on one turbo at 15 psi is different then another. Your not saying that when my Greddy is putting out 12 PSI its actually 10 on another turbo. Isnt the stock motor only good for 12 anyway?
Another tip: T-clamps > Screw clamps
Another tip: T-clamps > Screw clamps
#32
No one is knocking the greddy turbo, it is capable of decent power. What people are saying is that PSI does not equal the same power output from turbo to turbo. 15psi on the greddy can equal 275hp depending on mods and tuning. Whereas a larger or more efficient turbo could reach 275hp at 10 psi. It's not how many PSI you run it's how much CFM you are running through any specific turbo. The greddy is only efficient up to 15 i believe, after that it is past its compressor efficiency.
#33
But PSI doesnt vary from turbo to turbo, correct? I understand that the power output on one turbo at 15 psi is different then another. Your not saying that when my Greddy is putting out 12 PSI its actually 10 on another turbo. Isnt the stock motor only good for 12 anyway?
It's pretty simple. A larger turbo will push MORE AIR in the same amount of time as a smaller one at the same PSI. It isn't compression, it's VOLUME that changes.
#39
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I understood your argument and wasn't countering it.
But you could have worded a couple things a bit better. Like when you said a bigger turbo is more efficient. That's not true, it just has a different efficiency range compared to a smaller turbo.
It's all about pushing air, not pressure.
But you could have worded a couple things a bit better. Like when you said a bigger turbo is more efficient. That's not true, it just has a different efficiency range compared to a smaller turbo.
It's all about pushing air, not pressure.