The Ultimate GReddy Turbo Kit Thread
Joined: Feb 2010
Posts: 2,341
Likes: 5
From: lymington
7 psi is 7psi the upgrade will push the same amount of air at the same psi , but with less heat ie the same power will be made unless your boost drops off at red line.Yes it pulled nicely to my redline of 9500 tuned by Mase,my vtec was at 7500 and i felt it kick in after the upgrade.Its still a log mani so vetec still neads to be set high.If you was going to be happy with 11psi then the upgrade means you will be at the same heat level at 13psi which was 320whp for me ,buts thats near the limit off the 550 injectors .
Joined: Nov 2008
Posts: 1,347
Likes: 1
From: Pittsburgh, PA
7 psi is 7psi the upgrade will push the same amount of air at the same psi , but with less heat ie the same power will be made unless your boost drops off at red line.Yes it pulled nicely to my redline of 9500 tuned by Mase,my vtec was at 7500 and i felt it kick in after the upgrade.Its still a log mani so vetec still neads to be set high.If you was going to be happy with 11psi then the upgrade means you will be at the same heat level at 13psi which was 320whp for me ,buts thats near the limit off the 550 injectors .
this doesn't make sense....so the upgraded internals doesn't flow more cfms?
Joined: Feb 2010
Posts: 2,341
Likes: 5
From: lymington
No it dosent, well i got 304 whp at 9.8 psi compaired to 302 with the stock reddy t518z.
Its a log mani if you had a elm and 2.5" hotside ic piping then 10psi would prob be 30hp more.
But it is worth every penny just for the top end, ie it dosent full on its face any more. If like me you whant more power then upgrade your hotside to a elm and a gt3076 or turbo off your choice
As ive said on the log mani 7psi is 7psi no matter how much more the turbo will flow ,but the t620z will do it easyer with lower temps at give psi.
Its a log mani if you had a elm and 2.5" hotside ic piping then 10psi would prob be 30hp more.
But it is worth every penny just for the top end, ie it dosent full on its face any more. If like me you whant more power then upgrade your hotside to a elm and a gt3076 or turbo off your choice
As ive said on the log mani 7psi is 7psi no matter how much more the turbo will flow ,but the t620z will do it easyer with lower temps at give psi.
Registered User
Joined: Jul 2006
Posts: 1,008
Likes: 0
From: The Netherlands
No it dosent, well i got 304 whp at 9.8 psi compaired to 302 with the stock reddy t518z.
Its a log mani if you had a elm and 2.5" hotside ic piping then 10psi would prob be 30hp more.
But it is worth every penny just for the top end, ie it dosent full on its face any more. If like me you whant more power then upgrade your hotside to a elm and a gt3076 or turbo off your choice
As ive said on the log mani 7psi is 7psi no matter how much more the turbo will flow ,but the t620z will do it easyer with lower temps at give psi.
Its a log mani if you had a elm and 2.5" hotside ic piping then 10psi would prob be 30hp more.
But it is worth every penny just for the top end, ie it dosent full on its face any more. If like me you whant more power then upgrade your hotside to a elm and a gt3076 or turbo off your choice
As ive said on the log mani 7psi is 7psi no matter how much more the turbo will flow ,but the t620z will do it easyer with lower temps at give psi.
smooth/strong top end is also not a problem with the stock turbo when you move vtec to 7000 and have a good tuner..
Do you know any turbo/manifold that matches the greddy intercooler charge piping?
Registered User
Joined: Jul 2006
Posts: 1,008
Likes: 0
From: The Netherlands
use a mill tool 
