507 Rwhp On Forged Internals!
New Member
Joined: Nov 2003
Posts: 282
Likes: 0
From: colorado
Originally posted by 350Now
Interested to know how they manage to get the e-manage to control the 650cc. Was it just using the scaling for the injector size? Also how is the idle? If this works that's great news that the e-manage can handle large injectors.
Interested to know how they manage to get the e-manage to control the 650cc. Was it just using the scaling for the injector size? Also how is the idle? If this works that's great news that the e-manage can handle large injectors.
Registered User
Joined: Sep 2003
Posts: 790
Likes: 0
From: Del Rio, Texas
Originally posted by bldrz
All we used was the scaling for the injector size. The idle is fine, unless you are at high rpm's and push in the clutch it wants to die. We are in the process of fixing this.
All we used was the scaling for the injector size. The idle is fine, unless you are at high rpm's and push in the clutch it wants to die. We are in the process of fixing this.
Did you have to perform an Idle Air Volume Learning Procedure before it idled using a Consult-II? Or did it just idle right out of the box with the scaling adjustment?
Originally posted by bldrz
All we used was the scaling for the injector size. The idle is fine, unless you are at high rpm's and push in the clutch it wants to die. We are in the process of fixing this.
All we used was the scaling for the injector size. The idle is fine, unless you are at high rpm's and push in the clutch it wants to die. We are in the process of fixing this.
Thread Starter
Registered User
Joined: Apr 2004
Posts: 915
Likes: 0
From: denver
Originally posted by bldrz
In reality a stock 350Z runs about a 15.60
In reality a stock 350Z runs about a 15.60
My 350z feels real weak compared to my chiped/exaust Audi S4 i just traded in thats for sure!
Thread Starter
Registered User
Joined: Apr 2004
Posts: 915
Likes: 0
From: denver
Originally posted by PoWeRtRiP
i am sorry to say that you are wrong
10 psi out of a t25 is the equivalent of about 3 psi in a t78 (rough guess) it goes like this a turbo flows air right? well the amount of air it flows is based on the size of the compressor, then that amount of air is pressurized to a certain degree. a large turbo will produce the same power at a low psi that a small one would at high psi just because the compressor is much larger on the big one. i think its called cfm (the amount of air that it flows) and is generally measured by the a/r of a turbo. im sure someone else will chime in and explain this more for you as im not the best at pointing out the details
i am sorry to say that you are wrong
10 psi out of a t25 is the equivalent of about 3 psi in a t78 (rough guess) it goes like this a turbo flows air right? well the amount of air it flows is based on the size of the compressor, then that amount of air is pressurized to a certain degree. a large turbo will produce the same power at a low psi that a small one would at high psi just because the compressor is much larger on the big one. i think its called cfm (the amount of air that it flows) and is generally measured by the a/r of a turbo. im sure someone else will chime in and explain this more for you as im not the best at pointing out the details
well in my defense I was stightly intoxicated well maybe more than slightly but i know better than that ..forgot CFM duh.. you can flow 100 cfm at 10 psi or 1000 cfm at 10 psi depending on the compressor ..just a little brain 
Registered User
Joined: Jul 2002
Posts: 1,510
Likes: 1
From: Santa Cruz, CA
Guys, remember that in addition to compressor flow, you have the flow of the heads and the engine itself.
The PSI is generated by backpressure, which is due to the compressor pusing more air into the intake than the engine can take. This causes a buildup of air (increased pressure) which forces air through the intake valves into the engine. As long as your turbo is operating efficiently, 10 PSI on one turbo should flow similarly to 10 PSI on another because they are both forcing air through the same heads and intake valves.
I think the biggest difference is where exactly you are operating in the turbo map, and therefore how much you are heating the air and how close you are to the maximum flow of the turbo's. Also, a bigger turbo might allow freer exhaust flow which might allow a bit more air to flow during the intake stroke at the same PSI (OK, a bit contradictory to what I was saying before, but it's not going to be a 10X difference or anything like that). The primary importance is to get a set of turbos that are sized for your planned boost and flow rate (which are related to eachother based on the engine size, exhaust, intake, blah, blah, blah).
-D'oh!
The PSI is generated by backpressure, which is due to the compressor pusing more air into the intake than the engine can take. This causes a buildup of air (increased pressure) which forces air through the intake valves into the engine. As long as your turbo is operating efficiently, 10 PSI on one turbo should flow similarly to 10 PSI on another because they are both forcing air through the same heads and intake valves.
I think the biggest difference is where exactly you are operating in the turbo map, and therefore how much you are heating the air and how close you are to the maximum flow of the turbo's. Also, a bigger turbo might allow freer exhaust flow which might allow a bit more air to flow during the intake stroke at the same PSI (OK, a bit contradictory to what I was saying before, but it's not going to be a 10X difference or anything like that). The primary importance is to get a set of turbos that are sized for your planned boost and flow rate (which are related to eachother based on the engine size, exhaust, intake, blah, blah, blah).
-D'oh!
Boulder Nissan:
What is the current fuel system setup you are using to acheive these numbers? Based on your comments about the need to upgrade your fuel system, are you really running the stock system to get this power? If so...how is that possible?
I am maxing out my stock system at 7psi.
BTW, great post...and PLEASE keep us updated with dyno charts, etc...etc....this is great!!
What is the current fuel system setup you are using to acheive these numbers? Based on your comments about the need to upgrade your fuel system, are you really running the stock system to get this power? If so...how is that possible?
I am maxing out my stock system at 7psi.
BTW, great post...and PLEASE keep us updated with dyno charts, etc...etc....this is great!!
New Member
Joined: Nov 2003
Posts: 282
Likes: 0
From: colorado
Originally posted by gq_626
Boulder Nissan:
What is the current fuel system setup you are using to acheive these numbers? Based on your comments about the need to upgrade your fuel system, are you really running the stock system to get this power? If so...how is that possible?
I am maxing out my stock system at 7psi.
BTW, great post...and PLEASE keep us updated with dyno charts, etc...etc....this is great!!
Boulder Nissan:
What is the current fuel system setup you are using to acheive these numbers? Based on your comments about the need to upgrade your fuel system, are you really running the stock system to get this power? If so...how is that possible?
I am maxing out my stock system at 7psi.
BTW, great post...and PLEASE keep us updated with dyno charts, etc...etc....this is great!!
Registered User
Joined: Sep 2003
Posts: 790
Likes: 0
From: Del Rio, Texas
Originally posted by bldrz
We used the stock fuel system. It did drop pressure but the A/F was at around 10:1 at 4000 rpms and went to 11:1 up until 5500 rpms and then climbed up to 14:1 at 6500 rpms. We are upgradeing the complete fuel sysem now.
We used the stock fuel system. It did drop pressure but the A/F was at around 10:1 at 4000 rpms and went to 11:1 up until 5500 rpms and then climbed up to 14:1 at 6500 rpms. We are upgradeing the complete fuel sysem now.
I'm gonna get that Squill guy to come too.
Thread Starter
Registered User
Joined: Apr 2004
Posts: 915
Likes: 0
From: denver
Originally posted by UsafaRice
You know, if you guys don't give us pictures, I'm gonna have to come up there and bother you until you do.
I'm gonna get that Squill guy to come too.
You know, if you guys don't give us pictures, I'm gonna have to come up there and bother you until you do.
I'm gonna get that Squill guy to come too.
Yeah..I wanna know.
Aalzuhair, this must be the third cryogenically frozen post they you have ressussetated lately. You should teach CPR or something.
keep up the good work.
Aalzuhair, this must be the third cryogenically frozen post they you have ressussetated lately. You should teach CPR or something.
keep up the good work.
Sponsor
Forged Internals.com
Forged Internals.com
Joined: May 2003
Posts: 5,566
Likes: 1
From: Valdosta, GA
Originally posted by gq_626
Yeah..I wanna know.
Aalzuhair, this must be the third cryogenically frozen post they you have ressussetated lately. You should teach CPR or something. keep up the good work.
Yeah..I wanna know.
Aalzuhair, this must be the third cryogenically frozen post they you have ressussetated lately. You should teach CPR or something.
keep up the good work.
LOL...yeah! Him and I use to go back and forth on threads for days. But I i havent seen Squill post for many many months. I might have to upgrade my status to National Genius.
But I i havent seen Squill post for many many months. I might have to upgrade my status to National Genius.
Sponsor
Forged Internals.com
Forged Internals.com
Joined: May 2003
Posts: 5,566
Likes: 1
From: Valdosta, GA
Originally posted by gq_626
LOL...yeah! Him and I use to go back and forth on threads for days. But I i havent seen Squill post for many many months. I might have to upgrade my status to National Genius.
LOL...yeah! Him and I use to go back and forth on threads for days.
But I i havent seen Squill post for many many months. I might have to upgrade my status to National Genius.
New Member
Joined: Nov 2003
Posts: 282
Likes: 0
From: colorado
hi guys, sorry we have not posted in a while. the z is still being rebuilt. it is about 30 days from completion(widedody, lambo doors, reworked turbos, halfshafts and new clutch. turbos should now be the equivelent of 20g's. we will post a new thread with pictures and dynos when it is complete. thanks jason