Nissan 370Z Forum  

Custom ported and CNC throttle bodies, upper and lower manifolds by Synergy Composite

Originally Posted by wstar ?? Maybe I'm misunderstanding you, or I don't understand this **** as well as I thought I did. I thought our AFR target maps (the ones

Go Back   Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain > Intake/Exhaust


Like Tree487Likes

Closed Thread
 
LinkBack Thread Tools Display Modes
Old 07-01-2014, 09:11 AM   #211 (permalink)
A True Z Fanatic
 
synolimit's Avatar
 
Join Date: May 2013
Location: Columbus, OH
Posts: 5,051
Drives: 2013 Silver 370z
Rep Power: 3389
synolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond repute
Default

Quote:
Originally Posted by wstar View Post
?? Maybe I'm misunderstanding you, or I don't understand this **** as well as I thought I did. I thought our AFR target maps (the ones you can modify based on rpm/load/whatever) were what it used in closed-loop mode to realtime-tune the fuel trims based on feedback from the upper O2's to reach the desired target AFRs.

I also thought, by definition, "open loop" meant you're running on a fixed set of fuel tables (perhaps including recently-learned trims from closed-loop mode) but *not* using AFR from the upper O2's to modify the fueling in realtime to try to reach a specific target anymore. In other words, closed loop is based on realtime feedback, and open loop isn't.
Subi is switched. Real time is open loop but with a non wide band O2 it can only read and adjust down to like 11.2afr which is bad when you need to run richer. Maybe nissan is different being NA. Megan should know.
__________________
13 370z-
synolimit is offline  
Old 07-01-2014, 11:07 AM   #212 (permalink)
A True Z Fanatic
 
Megan370z's Avatar
 
Join Date: Oct 2009
Location: Canada
Posts: 1,156
Drives: 370z
Rep Power: 24
Megan370z has a reputation beyond reputeMegan370z has a reputation beyond reputeMegan370z has a reputation beyond reputeMegan370z has a reputation beyond reputeMegan370z has a reputation beyond reputeMegan370z has a reputation beyond reputeMegan370z has a reputation beyond reputeMegan370z has a reputation beyond reputeMegan370z has a reputation beyond reputeMegan370z has a reputation beyond reputeMegan370z has a reputation beyond repute
Default

Im in the garage right now using my cell, i will make it short.
I think understand what you just explained but I wouldnt put a bigger maf tube (2.75 OD) than what your intake is. It would just transfer the bottleneck somewhere elese and causing some intake resonance because of the relatively big gap of your last bottom picture.

IMO, your maf tube should be flowing slightly better than your TB. And from your maf to your intake manifold should either be the same or bigger than the flowing capability of your MAF tube. which help with throttle reponse if its a bit bigger
__________________
Megan Journal *Click Me* ....................One Man Team Motorsport *Click Me*
Megan370z is offline  
Old 07-01-2014, 11:09 AM   #213 (permalink)
Enthusiast Member
 
N0SL3N's Avatar
 
Join Date: Dec 2011
Location: Toronto
Posts: 376
Drives: 2009 PG 370z 6MT
Rep Power: 34
N0SL3N has a reputation beyond reputeN0SL3N has a reputation beyond reputeN0SL3N has a reputation beyond reputeN0SL3N has a reputation beyond reputeN0SL3N has a reputation beyond reputeN0SL3N has a reputation beyond reputeN0SL3N has a reputation beyond reputeN0SL3N has a reputation beyond reputeN0SL3N has a reputation beyond reputeN0SL3N has a reputation beyond reputeN0SL3N has a reputation beyond repute
Default

I would think with the intake you would want to have the largest ID at the filter and the smallest at the TB. That way you can increase the velocity of the air flow into the manifold. If you have restricted sections (by the MAFs) you will be creating a vacuum that prevents the maximum amount of air from flowing.

So I would think you want something like 2.75" - 2.5" - 2.35".
synolimit likes this.
__________________
| Akuma | Motordyne | Z1 | NST | CNT | Stillen | Avant Garde | RJM | Performix | Tint | LED | GTR | Nissan |
N0SL3N is offline  
Old 07-01-2014, 11:36 AM   #214 (permalink)
A True Z Fanatic
 
Megan370z's Avatar
 
Join Date: Oct 2009
Location: Canada
Posts: 1,156
Drives: 370z
Rep Power: 24
Megan370z has a reputation beyond reputeMegan370z has a reputation beyond reputeMegan370z has a reputation beyond reputeMegan370z has a reputation beyond reputeMegan370z has a reputation beyond reputeMegan370z has a reputation beyond reputeMegan370z has a reputation beyond reputeMegan370z has a reputation beyond reputeMegan370z has a reputation beyond reputeMegan370z has a reputation beyond reputeMegan370z has a reputation beyond repute
Default

Quote:
Originally Posted by N0SL3N View Post
I would think with the intake you would want to have the largest ID at the filter and the smallest at the TB. That way you can increase the velocity of the air flow into the manifold. If you have restricted sections (by the MAFs) you will be creating a vacuum that prevents the maximum amount of air from flowing.

So I would think you want something like 2.75" - 2.5" - 2.35".
Depend what your goal is . This is partialy true.
If your pre-throttle tube is smaller than the Tb itself and the Maf . You are killing the throttle respond which for an N/a setup isnt something you want.

But I totaly agree from the filter up to the entry of the maf tube. Should be bigger
this is what was done on my custom cai... starting from 3" down to 63.5mm.
__________________
Megan Journal *Click Me* ....................One Man Team Motorsport *Click Me*
Megan370z is offline  
Old 07-01-2014, 04:26 PM   #215 (permalink)
A True Z Fanatic
 
synolimit's Avatar
 
Join Date: May 2013
Location: Columbus, OH
Posts: 5,051
Drives: 2013 Silver 370z
Rep Power: 3389
synolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond repute
Default

Quote:
Originally Posted by Megan370z View Post
Im in the garage right now using my cell, i will make it short.
I think understand what you just explained but I wouldnt put a bigger maf tube (2.75 OD) than what your intake is. It would just transfer the bottleneck somewhere elese and causing some intake resonance because of the relatively big gap of your last bottom picture.

IMO, your maf tube should be flowing slightly better than your TB. And from your maf to your intake manifold should either be the same or bigger than the flowing capability of your MAF tube. which help with throttle reponse if its a bit bigger
But I don't have a choice. The MAF section and some small sections are only 2.35" ID and the bottle neck. The TB is now 2.48". I either replace them with 2.63" ID (2.75" pipe) or leave them alone. I can't make what you made. If I replace all 2.35" sections my cai would roughly be 2.5" with with a few 2.63" sections. As you said to N0SL3N this might be good since the cai will taper into the smallest spot (the TB again).
__________________
13 370z-
synolimit is offline  
Old 07-01-2014, 05:04 PM   #216 (permalink)
A True Z Fanatic
 
synolimit's Avatar
 
Join Date: May 2013
Location: Columbus, OH
Posts: 5,051
Drives: 2013 Silver 370z
Rep Power: 3389
synolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond repute
Default

Ok I did a little research.

The TB lip is 2.81" at its largest. That tells me the Z1 post tube is around that size ID since it has to slip over it. Now its not hard to slip over but it's also not that easy. So I'm going to guess the several inches of the z1 post tube is around 2.7ish inch ID.



Now the OEM MAF section is only 2.54" OD which is why you see a bulge. The post tube is being forced into a smaller size. The silver pipe is 2.5" OD with the same ID of the OEM MAF tube. So forget all pipe before that, I'm running about a foot of 2.35" ID pipe with the MAF sensor in it that then opens up into the post tube that's 2.7ish ID that then goes down into 2.6" (TB opening lip) then 2.48" (right at the butterfly plate and port matched into the manifold) of the TB.



So if I at least replaced the foot of 2.35" ID silver pipe and OEM MAF section with 2.75" OD pipe, not only would it fit pretty well into the z1 post tube but it'd also lower the huge gap (2.35" to 2.7ish" now, to 2.63" to 2.7ish) I have right now.
__________________
13 370z-

Last edited by synolimit; 07-01-2014 at 05:09 PM.
synolimit is offline  
Old 07-08-2014, 01:58 PM   #217 (permalink)
Base Member
 
Join Date: Jun 2013
Location: Ocala
Posts: 158
Drives: 370z pearl white
Rep Power: 12
LNATKFRNG is on a distinguished road
Default

Any updates?
__________________
'09 sport package
LNATKFRNG is offline  
Old 07-08-2014, 04:55 PM   #218 (permalink)
Enthusiast Member
 
Juan@Fontana's Avatar
 
Join Date: Nov 2013
Location: Fontana
Posts: 315
Drives: Z32
Rep Power: 21
Juan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond repute
Default

you need custom 2.75" intakes asap, the MAF housing will be your big restriction.
Juan@Fontana is offline  
Old 07-08-2014, 05:40 PM   #219 (permalink)
A True Z Fanatic
 
synolimit's Avatar
 
Join Date: May 2013
Location: Columbus, OH
Posts: 5,051
Drives: 2013 Silver 370z
Rep Power: 3389
synolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond repute
Default

Quote:
Originally Posted by LNATKFRNG View Post
Any updates?
Still looking for a tuner that doesn't charge an arm and a leg. I like a few but when I know a uprev license costs xxx and you tell you change double, it's not cool. I'd rather have you lie and tell me the tunes labor is more.

Quote:
Originally Posted by Juan@Fontana View Post
you need custom 2.75" intakes asap, the MAF housing will be your big restriction.
Where's a 2.75 OD MAF housing I can weld to 2.75" OD pipe? I know a place for subis up to like 4" OD pipe.
__________________
13 370z-
synolimit is offline  
Old 07-08-2014, 05:46 PM   #220 (permalink)
Premium Member Bitches
 
DEpointfive0's Avatar
 
Join Date: Jan 2012
Location: SoCal
Posts: 14,824
Drives: a lot
Rep Power: 17151
DEpointfive0 has a reputation beyond reputeDEpointfive0 has a reputation beyond reputeDEpointfive0 has a reputation beyond reputeDEpointfive0 has a reputation beyond reputeDEpointfive0 has a reputation beyond reputeDEpointfive0 has a reputation beyond reputeDEpointfive0 has a reputation beyond reputeDEpointfive0 has a reputation beyond reputeDEpointfive0 has a reputation beyond reputeDEpointfive0 has a reputation beyond reputeDEpointfive0 has a reputation beyond repute
Default

Quote:
Originally Posted by synolimit View Post
Still looking for a tuner that doesn't charge an arm and a leg. I like a few but when I know a uprev license costs xxx and you tell you change double, it's not cool. I'd rather have you lie and tell me the tunes labor is more.
Do you KNOW the cost of an UpRev license?
I do, and I know it's retarded cheap... But you can't NOT pay the park up... So... Just gotta bite that pillow and bend over.
__________________
Do YOU want to know what/where I got my username from?
( Click to show/hide )
DEpointfive0 is offline  
Old 07-08-2014, 06:01 PM   #221 (permalink)
A True Z Fanatic
 
synolimit's Avatar
 
Join Date: May 2013
Location: Columbus, OH
Posts: 5,051
Drives: 2013 Silver 370z
Rep Power: 3389
synolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond repute
Default

Quote:
Originally Posted by DEpointfive0 View Post
Do you KNOW the cost of an UpRev license?
I do, and I know it's retarded cheap... But you can't NOT pay the park up... So... Just gotta bite that pillow and bend over.
Yeah the IPS tuner I've known for 5 years and friends with. He charges $150 uprev, $100 to rent dyno from IPS because he doesn't 100% work there, just a stop by tuner, and $200 for him to dyno my car. If it takes a hour it's the same. If it takes 5 hours, it's the same. For me at least. All others he charges $250 to tune. Subis he doesn't have to charge for uprev!! I miss $350 tunes, or custom etunes for $80.
__________________
13 370z-
synolimit is offline  
Old 07-08-2014, 06:42 PM   #222 (permalink)
A True Z Fanatic
 
synolimit's Avatar
 
Join Date: May 2013
Location: Columbus, OH
Posts: 5,051
Drives: 2013 Silver 370z
Rep Power: 3389
synolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond repute
Default

Quote:
Originally Posted by LNATKFRNG View Post
Any updates?
I do have one update. I haven't touched my mpg in a long time. Its normally 22-23. It's been a week or so since I put the parts on and I've been driving everywhere!! Work, 3hr trips, etc etc. I do 75-80 on the highway. I've got maybe 600 miles so far and this has happened...it's gone way up.
Attached Images
File Type: jpg image.jpg (416.0 KB, 38 views)
aszyd likes this.
__________________
13 370z-
synolimit is offline  
Old 07-08-2014, 07:10 PM   #223 (permalink)
Enthusiast Member
 
Juan@Fontana's Avatar
 
Join Date: Nov 2013
Location: Fontana
Posts: 315
Drives: Z32
Rep Power: 21
Juan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond reputeJuan@Fontana has a reputation beyond repute
Default

Quote:
Originally Posted by synolimit View Post
Still looking for a tuner that doesn't charge an arm and a leg. I like a few but when I know a uprev license costs xxx and you tell you change double, it's not cool. I'd rather have you lie and tell me the tunes labor is more.



Where's a 2.75 OD MAF housing I can weld to 2.75" OD pipe? I know a place for subis up to like 4" OD pipe.
I know uprev sells the weld in MAF flange but not pre welded to a pipe. so you would have to find a local fabricator to make the intakes for you.
Juan@Fontana is offline  
Old 07-08-2014, 07:45 PM   #224 (permalink)
Track Member
 
aszyd's Avatar
 
Join Date: May 2014
Location: Florida
Posts: 877
Drives: Magma Red 370z T+S
Rep Power: 21
aszyd has a reputation beyond reputeaszyd has a reputation beyond reputeaszyd has a reputation beyond reputeaszyd has a reputation beyond reputeaszyd has a reputation beyond reputeaszyd has a reputation beyond reputeaszyd has a reputation beyond reputeaszyd has a reputation beyond reputeaszyd has a reputation beyond reputeaszyd has a reputation beyond reputeaszyd has a reputation beyond repute
Default

Quote:
Originally Posted by synolimit View Post
I do have one update. I haven't touched my mpg in a long time. Its normally 22-23. It's been a week or so since I put the parts on and I've been driving everywhere!! Work, 3hr trips, etc etc. I do 75-80 on the highway. I've got maybe 600 miles so far and this has happened...it's gone way up.

25, that's awesome!
__________________
Competition Clutch|Fast Intentions|Maxbore|NST|Setrab|Stillen|Tomei|Uprev| Z1
Avant Garde|SPC|Stance|Whiteline
Aerojacket|Seibon|Tanabe|TRS|TWM
aszyd is offline  
Old 07-08-2014, 08:36 PM   #225 (permalink)
Base Member
 
Join Date: Jun 2013
Location: Ocala
Posts: 158
Drives: 370z pearl white
Rep Power: 12
LNATKFRNG is on a distinguished road
Default

That's sucks about your tuner good luck with it, I did see a few 2.75 slip in Maf housings but I don't remember any weld in tubes
__________________
'09 sport package
LNATKFRNG is offline  
Closed Thread

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Custom ported and CNC throttle bodies, upper and lower manifolds synolimit Exhaust/Intake 297 06-25-2021 10:13 AM
[WTB] Lower intake manifolds! Uppers and TB's welcome!! synolimit Parts for sale (Private Classifieds) 0 11-19-2014 03:02 AM
Smokeys dyno, ported TB's, manifolds etc synolimit Tuning 8 08-15-2014 12:11 PM
can the throttle bodies be taken off? boomboom Engine & Drivetrain 9 11-03-2013 02:46 PM
Kinetix 370Z/G37 Velocity Upper Intake Manifolds - Z1 Motorsports Dustin@Z1 Intake/Exhaust 151 03-18-2013 10:37 AM


All times are GMT -5. The time now is 09:32 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2