Boost questions - Ford Mustang Forums : Corral.net Mustang Forum
 
LinkBack Thread Tools Display Modes
post #1 of 5 Old 05-21-2010, 12:34 PM Thread Starter
Registered User
 
Turbo99svt's Avatar
 
Trader Feedback: (8)
Join Date: Feb 2010
Location: Davenport Iowa
Posts: 165
Boost questions

so i do believe that my 2001 mustang cobra does not have a map sensor so how does that all work with it getting positive psi instead of a vaccuum and will my fuel pressure regulator on the rail be ok getting pos psi or do they cap it off and just tune it for always wide open. Trying to learn more about how this stuff works. not just bolt it together and go


1999 Mustang Cobra
On your own performance (on3) turbo kit TC78, Diamond pistons, Manley h beam rods, Forged Crank Kurgan tuned 580hp 605 tq on 76mm, 01 cobra heads, Built Th400 trans, Straight axle
Turbo99svt is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 05-21-2010, 12:47 PM
Registered User
 
Erich's Avatar
 
Trader Feedback: (20)
Join Date: Jan 2000
Location: MD
Posts: 5,957
Typically you leave the fp reg hooked up. Some are setup to add more fuel P under boost. No MAP sensor. You do want to make sure boost does not get into the crankcase tho. Make sure there is no vent from the valve covers going to an inlet pipe that is after the turbos. NA, that is fine but under boost, you will pressurize your crankcase and blow oil everywhere-including from your turbo (blows right up the drain from the oil pan and out the seals)
Erich


97 Laser Red GT-248A Wingless model, Built Lincoln Mark VIII motor-Procharger D1SC, 3 core IC
2012 Black GT-Saddle, 3.73s, Brembos, Shaker1000
Erich is offline  
post #3 of 5 Old 05-21-2010, 02:07 PM Thread Starter
Registered User
 
Turbo99svt's Avatar
 
Trader Feedback: (8)
Join Date: Feb 2010
Location: Davenport Iowa
Posts: 165
ya what I am basically asking is... with that electronic/vaccuum fuel pressure reg does it sense the boost and vaccuum and will the fuel pressure reg be able to handle the boost knowing that it is designed for vaccuum only

1999 Mustang Cobra
On your own performance (on3) turbo kit TC78, Diamond pistons, Manley h beam rods, Forged Crank Kurgan tuned 580hp 605 tq on 76mm, 01 cobra heads, Built Th400 trans, Straight axle
Turbo99svt is offline  
Sponsored Links
Advertisement
 
post #4 of 5 Old 05-21-2010, 04:18 PM Thread Starter
Registered User
 
Turbo99svt's Avatar
 
Trader Feedback: (8)
Join Date: Feb 2010
Location: Davenport Iowa
Posts: 165
So for anyone else woundering this same thing i did a lil research and the fuel pressure reg works, it actually senses the difference between the intake and pressure and fuel rail. So i do belive that there is no need to worry about this, as long as the pressure reg can take a pound or so coming from the intake through the lil hose that comes for vaccuum and boost...still have to run a vaccuum canister for the hvac

1999 Mustang Cobra
On your own performance (on3) turbo kit TC78, Diamond pistons, Manley h beam rods, Forged Crank Kurgan tuned 580hp 605 tq on 76mm, 01 cobra heads, Built Th400 trans, Straight axle
Turbo99svt is offline  
post #5 of 5 Old 05-21-2010, 11:56 PM
Registered User
 
foxfan88's Avatar
 
Trader Feedback: (14)
Join Date: Jul 2005
Location: Miami, OK
Posts: 422
you need a FPR that will raise one psi per psi of boost. You need to raise fuel pressure by the same amount of boost you have to compensate, your trying to keep the differential pressure the same all the time. Your stock FPR should be fine AFAIK, the foxs had boost sensitive regulators stock, so i am sure a newer one does too.

Theres no MAP on your car, your MAF reads airflow as a mass, boosted air is more dense/more massive, your MAF simply reads more mass coming in, only thing you need to make sure is your MAF's airflow range is enough for what you combo will move. If you "peg" the meter, your engine wont know more air is coming in and will cause a lean condition.

Brett
91 GT 302 CID c4 w/brake
TFS TW heads, f-cam, typhoon
70mm masterpower single turbo setup.
foxfan88 is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Mustang Forums : Corral.net Mustang 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:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
boost questions MJ86GT Superchargers 5 06-30-2009 05:17 PM
Want more boost.....Boost controller Questions. jcg9777 Turbochargers 0 09-12-2008 04:34 AM
Boost questions CWingard SVT & DOHC 16 07-30-2005 07:33 AM

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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome