Dyno'd with the nitrous, I've got questions! [DYNO CHART] - Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum > Ford Focus Tech Discussions > General Forced Induction

General Forced Induction The place to chat about turbochargers, superchargers nitrous systems and custom engine fabrications.

Search This Forum | Image Search | Advanced Search    
Ford Focus Tire & Wheels FocusFanatics Merchandise

Reply
 
Thread Tools Display Modes
Old 07-16-2010, 12:24 PM   #1
_spyder
Focusless
 
_spyder's Avatar
 
Join Date: May 2008
Fan#: 56088
Location: Appleton, WI
What I Drive: Turbo 1996 Montego Blue Miata

Posts: 1,826
FF Reputation: 16 _spyder Great Standing Member
Buy-Sell-Trade Rating: (10)
Dyno'd with the nitrous, I've got questions! [DYNO CHART]

Here is the dyno chart:


The first run is without nitrous. My mods are:
SVT Header
SVT Catalytic converter
SVT Flex Pipe
2.5" OBX Exhaust
SVT Intake with snorkel and K&N filter
9mm Ford Racing spark plug wires

The second run is with an NX 50 shot (at ~1,000 psi)

I'm happy with both runs and the numbers both ways. Although there are two things that I would like to fix.

The first one is I am leaner than I would like to be with on the bottle. (The dyno guy said the ratio would read about 1 point higher than it actually is because I have a catalytic converter and a decent exhaust leak between the flex and exhaust)

There are two things right away that I know I can change to help the problem. First, I can up the fuel jet and second, I can close the gap on the plugs. My question is, which jet should I use for fuel? Right now I'm using 35N/20F, so should I go up to a 22 fuel jet? I ask because I have a spare 22. Then for the plug gap, what should I be gaping these to with nitrous? Right now I have the colder Motorcraft coppers gaped at ~0.65. The dyno guy said I should gap them down to ~0.35-0.40, what do you guys think?

And the second issue, as you can see if you look at the graph, the line with the nitrous on is bouncy. When it hits 3,000 RPM the nitrous kicks in and goes up but then drops back down a bit and continues to flow like that. The guy at the dyno said normally when cars are on nitrous it peaks up like that and stays that way as it caries over. Any idea why it is waving like this? The line was purged, so we're thinking the solenoids might be kicking in and out. Could the fuel pressure safety switch be causing this?

Scott and I will be checking out the timing and knock with his scanner sometime within the next week just to make sure everything is alright. After I work things out, I'd like to get a tune, but that isn't in the price range right now.

In the end, my questions are:
What fuel jet should I go up to?
What should I gap my plugs to?
Any idea why the chart is wavy?

Thanks for reading, constructive criticism is welcome


__________________
2002 Twilight Blue ZX3 - Sold 9/1/10
Now driving a Montego Blue Turbo 1996 Mazda Miata
_spyder is offline  
    Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 07-16-2010, 12:50 PM   #2
focusboy5
Focus Fanatic
 
focusboy5's Avatar
 
Join Date: Sep 2007
Fan#: 50002
Location: Wichita, Kansas, United States
What I Drive: Four Wheels

Posts: 2,859
Points 8,173, Level 61
Points: 8,173, Level: 61 Points: 8,173, Level: 61 Points: 8,173, Level: 61
Level Up 8% Completed
Level up: 8% Level up: 8% Level up: 8%
Forum Activity 0%
Activity: 0% Activity: 0% Activity: 0%
FF Reputation: 31 focusboy5 Great Standing Member
Buy-Sell-Trade Rating: (13)
That's a scary looking dyno...
focusboy5 is offline  
    Reply With Quote Quick reply to this message
Old 07-16-2010, 03:13 PM   #3
1turbofocus
FF Affiliate
 
1turbofocus's Avatar
 
Join Date: Oct 2003
Fan#: 1123
Location: Belmont, NC
What I Drive: 2000 ZX3 / 2002 SVT Turbocharged

Posts: 22,206
Points 51,351, Level 100
Points: 51,351, Level: 100 Points: 51,351, Level: 100 Points: 51,351, Level: 100
Level Up 0% Completed
Level up: 0% Level up: 0% Level up: 0%
Forum Activity 27%
Activity: 27% Activity: 27% Activity: 27%
FF Reputation: 154 1turbofocus Excellent Standing Member 1turbofocus Excellent Standing Member
Buy-Sell-Trade Rating: (28)
Your stock is rich , your nitrous is lean , and you better get a tune on that thing before many bottles

Tom
__________________
Focus-Power: Your #1 Source for Ford Focus Speed, Tuning & Performance!

Customer Support
AIM: hpdyno
Email: hpdyno@aol.com
Phone: 704-249-3745
Site: focus-power.com

Elder 1turbofocus
1turbofocus is offline  
    Reply With Quote Quick reply to this message
Old 07-16-2010, 03:23 PM   #4
_spyder
Focusless
 
_spyder's Avatar
 
Join Date: May 2008
Fan#: 56088
Location: Appleton, WI
What I Drive: Turbo 1996 Montego Blue Miata

Posts: 1,826
FF Reputation: 16 _spyder Great Standing Member
Buy-Sell-Trade Rating: (10)
Should I put in the 0.022 fuel jet? And would it be good to gap the plugs at 0.40? If these sound good, I'm planning on doing this either tonight or tomorrow. I'm going to be very conservative on the bottle so it isn't too hard on the motor.

Also, any idea why the dyno chart is wavy?
__________________
2002 Twilight Blue ZX3 - Sold 9/1/10
Now driving a Montego Blue Turbo 1996 Mazda Miata
_spyder is offline  
    Reply With Quote Quick reply to this message
Old 07-16-2010, 03:25 PM   #5
disciplerocks
GT40 all the things!
 
disciplerocks's Avatar
 
Join Date: Sep 2008
Fan#: 59330
Location: Evansville, IN
What I Drive: 04 ZX3, 12 Hatch

Posts: 9,442
Points 13,185, Level 74
Points: 13,185, Level: 74 Points: 13,185, Level: 74 Points: 13,185, Level: 74
Level Up 84% Completed
Level up: 84% Level up: 84% Level up: 84%
Forum Activity 1%
Activity: 1% Activity: 1% Activity: 1%
FF Reputation: 13 disciplerocks Great Standing Member
Buy-Sell-Trade Rating: (17)
Well the 50 shot is pretty accurate.
__________________
04 ZX3 Mostly Stock ["Best Non-SVT" FITF '12][3/13 ROTM][7/14 ROTM][2014 ROTY]
12 SE Hatch Sport & Winter Package, ST Front End
94 F150 XLT 5.0 HO, OBDII Swap
89 Bronco II XLT Crawler

Last edited by disciplerocks; 07-16-2010 at 06:42 PM.
disciplerocks is offline  
    Reply With Quote Quick reply to this message
Old 07-16-2010, 04:23 PM   #6
1turbofocus
FF Affiliate
 
1turbofocus's Avatar
 
Join Date: Oct 2003
Fan#: 1123
Location: Belmont, NC
What I Drive: 2000 ZX3 / 2002 SVT Turbocharged

Posts: 22,206
Points 51,351, Level 100
Points: 51,351, Level: 100 Points: 51,351, Level: 100 Points: 51,351, Level: 100
Level Up 0% Completed
Level up: 0% Level up: 0% Level up: 0%
Forum Activity 27%
Activity: 27% Activity: 27% Activity: 27%
FF Reputation: 154 1turbofocus Excellent Standing Member 1turbofocus Excellent Standing Member
Buy-Sell-Trade Rating: (28)
Yes I would go up one fuel jet size that will add more fuel , you need to do a datalog to see what everything else is doing so you know if your safe , the AF is only a part of what info you need

Tom
__________________
Focus-Power: Your #1 Source for Ford Focus Speed, Tuning & Performance!

Customer Support
AIM: hpdyno
Email: hpdyno@aol.com
Phone: 704-249-3745
Site: focus-power.com

Elder 1turbofocus
1turbofocus is offline  
    Reply With Quote Quick reply to this message
Old 07-16-2010, 04:45 PM   #7
_spyder
Focusless
 
_spyder's Avatar
 
Join Date: May 2008
Fan#: 56088
Location: Appleton, WI
What I Drive: Turbo 1996 Montego Blue Miata

Posts: 1,826
FF Reputation: 16 _spyder Great Standing Member
Buy-Sell-Trade Rating: (10)
Right now I have a 0.020 in there. Should I go up to a 0.022?

I already have a 0.022, but I could buy a 0.021, it would just save me $10 if I could use the one I already have.

I have no tuning stuff, I'd like to get it but it's like $650.
__________________
2002 Twilight Blue ZX3 - Sold 9/1/10
Now driving a Montego Blue Turbo 1996 Mazda Miata
_spyder is offline  
    Reply With Quote Quick reply to this message
Old 07-16-2010, 06:33 PM   #8
drostedrummer89
I <3 my SVT
 
drostedrummer89's Avatar
 
Join Date: Sep 2009
Fan#: 69059
Location: Royal Oak, MI
What I Drive: 2002 Sonic SVT

Posts: 1,761
Points 5,199, Level 46
Points: 5,199, Level: 46 Points: 5,199, Level: 46 Points: 5,199, Level: 46
Level Up 25% Completed
Level up: 25% Level up: 25% Level up: 25%
Forum Activity 0%
Activity: 0% Activity: 0% Activity: 0%
FF Reputation: 8 drostedrummer89 Good Standing Member
Buy-Sell-Trade Rating: (10)
1turbofocus has a tune for you better than your average dyno guy. and its $399 with free updates as long as you stay na.
drostedrummer89 is offline  
    Reply With Quote Quick reply to this message
Old 07-16-2010, 06:47 PM   #9
1turbofocus
FF Affiliate
 
1turbofocus's Avatar
 
Join Date: Oct 2003
Fan#: 1123
Location: Belmont, NC
What I Drive: 2000 ZX3 / 2002 SVT Turbocharged

Posts: 22,206
Points 51,351, Level 100
Points: 51,351, Level: 100 Points: 51,351, Level: 100 Points: 51,351, Level: 100
Level Up 0% Completed
Level up: 0% Level up: 0% Level up: 0%
Forum Activity 27%
Activity: 27% Activity: 27% Activity: 27%
FF Reputation: 154 1turbofocus Excellent Standing Member 1turbofocus Excellent Standing Member
Buy-Sell-Trade Rating: (28)
You dont have the cash to get your engine safe ? Do you have the 1000.00 for a new engine and install ?

I love building and selling engines to guys that dont want to spend on tuning , sold a $13,500 632 Inch to a guy that didnt want to use the dyno before going to the track , lost his Dart block , Crower rods , Dart big cheif heads , roller cam all from lean and spk knock

Speed cost , Stupid cost even more

Tom
__________________
Focus-Power: Your #1 Source for Ford Focus Speed, Tuning & Performance!

Customer Support
AIM: hpdyno
Email: hpdyno@aol.com
Phone: 704-249-3745
Site: focus-power.com

Elder 1turbofocus
1turbofocus is offline  
    Reply With Quote Quick reply to this message
Old 07-16-2010, 07:03 PM   #10
FiFoci
Focus Addict
 
FiFoci's Avatar
 
Join Date: Sep 2008
Fan#: 59433
Location: North East, Maryland, MD
What I Drive: 11' Mustang GT 5.0,01' Twilight Zx3

Posts: 973
Points 7,198, Level 56
Points: 7,198, Level: 56 Points: 7,198, Level: 56 Points: 7,198, Level: 56
Level Up 24% Completed
Level up: 24% Level up: 24% Level up: 24%
Forum Activity 0%
Activity: 0% Activity: 0% Activity: 0%
FF Reputation: 6 FiFoci Good Standing Member
Buy-Sell-Trade Rating: (20)
Quote:
Originally Posted by 1turbofocus View Post
Speed cost , Stupid cost even more

Tom
Very True.
__________________
Fully Built, Topspeed manifold, CompTurbo: 364hp, 317tq...
^old and Busted^
2011 Mustang GT 5.0 Kona Blue: Bolt On's 440hp, 385tq
^SOLD^
'96 F-250 SCEB PowerStroke
FiFoci is offline  
    Reply With Quote Quick reply to this message
Reply

Bookmarks & Social Networks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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

Forum Jump


All times are GMT -5. The time now is 10:24 AM.


Copyright 2002-2014 FocusFanatics.com. All Rights Reserved : Privacy Policy : Advertise Information

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Audi S3, Ford Fusion and Acura TLX. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area. Challenger Hellcat - Charger Hellcat