FMU question - Ford Mustang Forums : Corral.net Mustang Forum
 
LinkBack Thread Tools Display Modes
post #1 of 20 Old 08-10-2009, 05:17 PM Thread Starter
Registered User
 
88stang1's Avatar
 
Trader Feedback: (3)
Join Date: Dec 2003
Location: maryland
Posts: 371
FMU question

I have a FMU (fuel bandaid) and 42# injectors with a B&G turbo kit. On vortech's website they say for 42's to use the 4:1 disk but I was wondering if I should use the 6:1 disk for a little more fuel?

Plan on getting a tune but I dont have $1000 dollars right now.

88stang1 is offline  
Sponsored Links
Advertisement
 
post #2 of 20 Old 08-10-2009, 06:55 PM
Registered User
 
millhouse's Avatar
 
Trader Feedback: (9)
Join Date: May 2002
Location: Simpsonville, SC
Posts: 3,209
A FMU is a band-aid for using injectors that are too small. You already have injectors big enough for your fuel requirements, so you will now need a matching MAF meter if you haven't already. A FMU now will do nothing for you...so you can either risk it with the MAF and injectors, or get a proper tune (which fyi shouldn't cost anywhere near $1k but closer to $500).


2016 Ruby Red Mustang GT PP
Prior Cars
1989 Mustang Notch - Twin Turbo - 500RWHP, 1996 Mustang Cobra, 1994 Mustang GT Vert - 408w
millhouse is offline  
post #3 of 20 Old 08-10-2009, 09:51 PM Thread Starter
Registered User
 
88stang1's Avatar
 
Trader Feedback: (3)
Join Date: Dec 2003
Location: maryland
Posts: 371
So let me get this right, I have a 3" blow thru PMASS meter calibrated for my 42#'ers so I dont need to bandaid it with an FMU?

JPC told me $300 for the chip and $600 for dyno time.
88stang1 is offline  
Sponsored Links
Advertisement
 
post #4 of 20 Old 08-11-2009, 09:30 AM
Registered User
 
millhouse's Avatar
 
Trader Feedback: (9)
Join Date: May 2002
Location: Simpsonville, SC
Posts: 3,209
Quote:
Originally Posted by 88stang1 View Post
So let me get this right, I have a 3" blow thru PMASS meter calibrated for my 42#'ers so I dont need to bandaid it with an FMU?

JPC told me $300 for the chip and $600 for dyno time.
That is correct, no need for an FMU. The MAF is going to allow you to run the 42# injectors as is...although unless your AFR's are in order in may not be safe to get into boost. It's possible that your WOT AFR's under boost could be in the safe range with that setup....but I wouldn't risk it without a wideband allowing you to see where your at. Regardless, a tune should still be had.

Go somewhere else. It should not cost over $600 from any reputable shop for both the chip and tune.
millhouse is offline  
post #5 of 20 Old 08-11-2009, 09:35 AM Thread Starter
Registered User
 
88stang1's Avatar
 
Trader Feedback: (3)
Join Date: Dec 2003
Location: maryland
Posts: 371
Ok, do you know of any tunners in the northern Maryland area? PA and DE are also very close to me.
88stang1 is offline  
post #6 of 20 Old 08-11-2009, 09:53 AM
Registered User
 
93gtman's Avatar
 
Trader Feedback: (21)
Join Date: Nov 1999
Location: ny
Posts: 1,863
if you wanted to drive to NJ i know there is crazy horse racing there and larocca performance.they are both very good its probly a 3 hr ride from where you are though

NY
92 Red Notch 5spd w/ B&G Kit Powered by MS2 V3 running Extra Code-----SOLD!
93gtman is offline  
post #7 of 20 Old 08-11-2009, 10:08 AM Thread Starter
Registered User
 
88stang1's Avatar
 
Trader Feedback: (3)
Join Date: Dec 2003
Location: maryland
Posts: 371
cool I will check both of those places out.
88stang1 is offline  
post #8 of 20 Old 08-11-2009, 10:34 AM
Registered User
 
Erich's Avatar
 
Trader Feedback: (20)
Join Date: Jan 2000
Location: MD
Posts: 5,957
SGS performance in Dillsburg PA is excellent. They are right up 15 a little north of gettysburgh.

I tried an fmu with 19# injectors on my TT setup. It worked poorly with the non linear boost.
I tryed a PMAS MAF with 42# injectors and it worked well and dynoed with a safe a/f.
Ultimately went with a chip and dynotune tho.

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 #9 of 20 Old 08-11-2009, 11:11 AM Thread Starter
Registered User
 
88stang1's Avatar
 
Trader Feedback: (3)
Join Date: Dec 2003
Location: maryland
Posts: 371
So you used 42#´ers with a fmu and had a safe afr. Was your fmu a stock calibration 12:1 or did you change the calibration disk to a 6:1 or 4:1?
88stang1 is offline  
post #10 of 20 Old 08-11-2009, 06:37 PM
Registered User
 
Erich's Avatar
 
Trader Feedback: (20)
Join Date: Jan 2000
Location: MD
Posts: 5,957
No the FMU was only with the 19#ers. 42s plus the calibrated maf worked quite well.
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 #11 of 20 Old 08-12-2009, 07:08 AM Thread Starter
Registered User
 
88stang1's Avatar
 
Trader Feedback: (3)
Join Date: Dec 2003
Location: maryland
Posts: 371
I called crazy horse in nj and he told me that he doesnt use any chip, that he uses your fmu and your btm and a tailpipe wideband. If I bought a wideband thats the same thing I could do in my garage with a couple of test runs.
88stang1 is offline  
post #12 of 20 Old 08-12-2009, 08:52 AM
Registered User
 
93gtman's Avatar
 
Trader Feedback: (21)
Join Date: Nov 1999
Location: ny
Posts: 1,863
damn when i called him about 3yrs ago he used to use superchips. Try lacrocca performance then...sorry man i didnt know that he changed its been 3 yrs since i called him

NY
92 Red Notch 5spd w/ B&G Kit Powered by MS2 V3 running Extra Code-----SOLD!
93gtman is offline  
post #13 of 20 Old 08-12-2009, 08:54 AM
Registered User
 
93gtman's Avatar
 
Trader Feedback: (21)
Join Date: Nov 1999
Location: ny
Posts: 1,863
another idea is why does you get a wideband and tune it yourself with Megasquirt or Tweecer? this way you make the changes and everytime you need to adjust something it doesnt cost you 500 or so. just an idea. and there are plenty of people on here that can help you out on both of those systems

NY
92 Red Notch 5spd w/ B&G Kit Powered by MS2 V3 running Extra Code-----SOLD!
93gtman is offline  
post #14 of 20 Old 08-12-2009, 09:10 AM Thread Starter
Registered User
 
88stang1's Avatar
 
Trader Feedback: (3)
Join Date: Dec 2003
Location: maryland
Posts: 371
I thought about a megasqirt, so that might be an option. How steep is the learning curve? Is the software easy to use or do you need to be able to read code to tune it?

Is the megasqirt speed density or mass air?
88stang1 is offline  
post #15 of 20 Old 08-12-2009, 09:17 AM
Registered User
 
93gtman's Avatar
 
Trader Feedback: (21)
Join Date: Nov 1999
Location: ny
Posts: 1,863
the learning curve is not that bad as long as you have a good understanding of how a car engine/efi pretty much works.II would recommed reading the Mega Manual a few times before you start it will help you get it started up and idling faster. there is no code to read like C++ if you mean. the software looks like a dashboard with menus above it to get into other settings. There are alot of poeple on here that can help you out that have it (i have it and a few others do). You can also email Matt Crammer or put a post in the megasqurit forum on here for any questions that Matt or others can help you with.Trust me its not that hard and in the end you will thank yourself

NY
92 Red Notch 5spd w/ B&G Kit Powered by MS2 V3 running Extra Code-----SOLD!
93gtman is offline  
post #16 of 20 Old 08-12-2009, 10:54 AM
Registered User
 
Erich's Avatar
 
Trader Feedback: (20)
Join Date: Jan 2000
Location: MD
Posts: 5,957
Where in MD are you at?
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 #17 of 20 Old 08-12-2009, 11:09 AM Thread Starter
Registered User
 
88stang1's Avatar
 
Trader Feedback: (3)
Join Date: Dec 2003
Location: maryland
Posts: 371
north eastern MD.

I just talked to s&g performance in PA and they told me 300 for the chip and 300 for the tune. Sounds good to me way cheaper then JPC.
88stang1 is offline  
post #18 of 20 Old 08-12-2009, 12:21 PM
Registered User
 
Erich's Avatar
 
Trader Feedback: (20)
Join Date: Jan 2000
Location: MD
Posts: 5,957
You mean SGS? Or is there another one? Not that bad of a ride from NE md.
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 #19 of 20 Old 08-12-2009, 01:17 PM Thread Starter
Registered User
 
88stang1's Avatar
 
Trader Feedback: (3)
Join Date: Dec 2003
Location: maryland
Posts: 371
yes I mean sgs performance. Dillsburg is only 100 miles from me.
88stang1 is offline  
post #20 of 20 Old 08-13-2009, 06:54 PM
Registered User
 
red89coupe's Avatar
 
Trader Feedback: (31)
Join Date: Feb 2003
Location: Ohio
Posts: 3,318
I have the PMAS pro tube and 42s as well.. been running un-tuned for 2 years without issue. I just used a cheap narrowband and the old fasion pulling plugs to make sure. IF it would have been lean there wasnt much I could do except have it tuned but I must be lucky lol

I did NOT just go out and go WOT either lol it was baby steps until I trusted it lol

NEVER do business with Sam Rivera AKA Sam Wilson.
red89coupe 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
FMU question, power pipe question, and pulley size question 4 eyed mustang Superchargers 5 04-23-2009 07:12 AM
FMU question TheMatrixHazUNeo 94/95 Tech 4 09-02-2005 05:11 PM
FMU question. ShadowStang50 Superchargers 37 05-28-2004 08:57 AM
FMU or not to FMU that is the Question??? IcantDo55 5.0/5.8 Engine Tech 3 08-02-2002 10:35 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