Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Supercharger, Turbocharger, Nitrous Oxide & Water/Methanol Injection
Sign in using an external account
Register Forgot Password?


Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
LinkBack Thread Tools Search this Thread
  #1 (permalink)  
Old 08-09-2011, 08:24 AM
schamsy's Avatar
schamsy schamsy is offline
New User
 
Join Date: Mar 2011
Posts: 13
schamsy is starting off with a positive reputation.
Turbo 4.6 on 5 psi of boost

Hey guys,

I have had a nice quality turbocharger laying around, it is a little big, but will do. My goal at first is to run 5 psi of boost just to get the truck up and running. I am guessing that will yield about 50 hp. My question is, will the stock fuel system, injectors and pump, allow me to run 5 psi of boost of will I have issues. I just planned on getting and adjustable FPR since it is such low boost levels, until I got a tune.

Thanks
Reply With Quote
  #2 (permalink)  
Old 08-09-2011, 09:59 PM
Blurry94's Avatar
Blurry94 Blurry94 is offline
Moderator
 
Join Date: Jun 2003
Location: Calhoun GA
Posts: 3,000
Blurry94 has a very good reputation on FTE.Blurry94 has a very good reputation on FTE.Blurry94 has a very good reputation on FTE.
You will need an FMU, not a FPR.

What year is the truck/motor?
__________________
Matt C.
Supercharged, Intercooled, FAST XFI
Reply With Quote
  #3 (permalink)  
Old 08-09-2011, 10:41 PM
schamsy's Avatar
schamsy schamsy is offline
New User
 
Join Date: Mar 2011
Posts: 13
schamsy is starting off with a positive reputation.
Its an '04 4.6.
Reply With Quote
  #4 (permalink)  
Old 08-11-2011, 05:02 AM
Blurry94's Avatar
Blurry94 Blurry94 is offline
Moderator
 
Join Date: Jun 2003
Location: Calhoun GA
Posts: 3,000
Blurry94 has a very good reputation on FTE.Blurry94 has a very good reputation on FTE.Blurry94 has a very good reputation on FTE.
You'll probably run out of range with your factory air meter which no FMU can compensate for. You can upgrade to a GEN 2 Lightning MAF and 42lb injectors fairly cheap, and it would make tuning much easier.
__________________
Matt C.
Supercharged, Intercooled, FAST XFI
Reply With Quote
  #5 (permalink)  
Old 08-11-2011, 08:00 AM
schamsy's Avatar
schamsy schamsy is offline
New User
 
Join Date: Mar 2011
Posts: 13
schamsy is starting off with a positive reputation.
Why would I get 42 lb injectors? I'm shooting for 300hp not 500. My truck would get 3 mpg and would smoke like a diesel cmon now.
Reply With Quote
  #6 (permalink)  
Old 08-11-2011, 08:11 AM
White Max's Avatar
White Max White Max is offline
Elder User
 
Join Date: Dec 2007
Location: Imperial, MO
Posts: 943
White Max has a good reputation on FTE.White Max has a good reputation on FTE.
Because 42lb injectors would be appropriately sized for a 4.6L seeing 5 psi from a turbo. Irregardless, you'll need a tune. Just sticking a FMU or adjustable FPR on there isn't going to cut it.

I have a little experience in pushing boost through modulars...
Click the image to open in full size.
__________________
Rod @ AzzKicker Cars
1995 Ford F150-The Mud Toy-5.0L, 4x4, 33's, & Warn 8274 Winch
1990 Mercury Cougar XR7-The Meth Addict-5.0L DOHC Stroker w/2.1L KB SC.
2004 Ford Mustang GT-The Driver-BBK CAI, PP TB & Inlet, Steeda UD's, SLP LM1, & 3.73's.
Reply With Quote
  #7 (permalink)  
Old 08-11-2011, 08:15 AM
schamsy's Avatar
schamsy schamsy is offline
New User
 
Join Date: Mar 2011
Posts: 13
schamsy is starting off with a positive reputation.
Are you stating facts? Do you have personal experience or know someone who has run 19# injectors with an FMU on 5psi of boost that had major issues? I'm not trying to say you are wrong, I just would like specific issues you know of that happened, not here-say. I have found a half dozen 4.6's that ran up to 7 psi on the stock 19# injectors. This is my DD so I wont be running wide open all the time, I have probably only shifted wide open a dozen times since I got the truck 6 months ago. So the injectors wont even see that kind of abuse very often.
Reply With Quote
  #8 (permalink)  
Old 08-11-2011, 08:30 AM
White Max's Avatar
White Max White Max is offline
Elder User
 
Join Date: Dec 2007
Location: Imperial, MO
Posts: 943
White Max has a good reputation on FTE.White Max has a good reputation on FTE.
No, I have not tried running undersized injectors with a FMU without a tune while pushing 5 psi.....I don't "rig" my junk. I prefer to do things once, the correct way. But good luck to you.
__________________
Rod @ AzzKicker Cars
1995 Ford F150-The Mud Toy-5.0L, 4x4, 33's, & Warn 8274 Winch
1990 Mercury Cougar XR7-The Meth Addict-5.0L DOHC Stroker w/2.1L KB SC.
2004 Ford Mustang GT-The Driver-BBK CAI, PP TB & Inlet, Steeda UD's, SLP LM1, & 3.73's.
Reply With Quote
  #9 (permalink)  
Old 08-11-2011, 08:36 AM
schamsy's Avatar
schamsy schamsy is offline
New User
 
Join Date: Mar 2011
Posts: 13
schamsy is starting off with a positive reputation.
Why do companies make FMU's? Why do companies sell them with turbo/ supercharger kits? They work, not as good as a tune, but they work. And when I am trying to create my rear mount build on a budget, that is the method I prefer. My only question is would it work, not do you think I am rigging my setup. Thanks
Reply With Quote
  #10 (permalink)  
Old 08-11-2011, 08:50 AM
White Max's Avatar
White Max White Max is offline
Elder User
 
Join Date: Dec 2007
Location: Imperial, MO
Posts: 943
White Max has a good reputation on FTE.White Max has a good reputation on FTE.
TORNADO Air Management Systems :: More Power! More Mileage!

They make it, so it must be good, right? It sounds like you've already made up your mind, so as I said before, good luck.
__________________
Rod @ AzzKicker Cars
1995 Ford F150-The Mud Toy-5.0L, 4x4, 33's, & Warn 8274 Winch
1990 Mercury Cougar XR7-The Meth Addict-5.0L DOHC Stroker w/2.1L KB SC.
2004 Ford Mustang GT-The Driver-BBK CAI, PP TB & Inlet, Steeda UD's, SLP LM1, & 3.73's.
Reply With Quote
  #11 (permalink)  
Old 08-11-2011, 09:05 AM
schamsy's Avatar
schamsy schamsy is offline
New User
 
Join Date: Mar 2011
Posts: 13
schamsy is starting off with a positive reputation.
Quote:
Originally Posted by White Max View Post
TORNADO Air Management Systems :: More Power! More Mileage!

They make it, so it must be good, right? It sounds like you've already made up your mind, so as I said before, good luck.
Kenne Bell is a pretty reputable supercharger manufacturer wouldn't you say? He sells it for his kits, and many many people have achieved real results with fmu's in other applications. This arguement was never about FMU's it was about the injectors, can they support ~300hp. Get real kid.
Reply With Quote
  #12 (permalink)  
Old 08-11-2011, 09:33 AM
White Max's Avatar
White Max White Max is offline
Elder User
 
Join Date: Dec 2007
Location: Imperial, MO
Posts: 943
White Max has a good reputation on FTE.White Max has a good reputation on FTE.
Quote:
Originally Posted by schamsy View Post
Get real kid.
I'm a kid now?


To answer your question, running 100% duty cycle, with a BFSC of 0.65, 300hp (at the flywheel) requires 24.375 lb/hr injectors. Running the injectors at an acceptable level (85% duty cycle), you'd need 28.676 lb/hr injectors. But what do I know?

If you want to buy a Kenne Bell FMU, I have two of them sitting here brand new in the packaging.
__________________
Rod @ AzzKicker Cars
1995 Ford F150-The Mud Toy-5.0L, 4x4, 33's, & Warn 8274 Winch
1990 Mercury Cougar XR7-The Meth Addict-5.0L DOHC Stroker w/2.1L KB SC.
2004 Ford Mustang GT-The Driver-BBK CAI, PP TB & Inlet, Steeda UD's, SLP LM1, & 3.73's.
Reply With Quote
  #13 (permalink)  
Old 08-11-2011, 09:47 AM
schamsy's Avatar
schamsy schamsy is offline
New User
 
Join Date: Mar 2011
Posts: 13
schamsy is starting off with a positive reputation.
Your calculations are not correct, I'll let you figure that one out.
Reply With Quote
  #14 (permalink)  
Old 08-12-2011, 07:21 AM
Blurry94's Avatar
Blurry94 Blurry94 is offline
Moderator
 
Join Date: Jun 2003
Location: Calhoun GA
Posts: 3,000
Blurry94 has a very good reputation on FTE.Blurry94 has a very good reputation on FTE.Blurry94 has a very good reputation on FTE.
Quote:
Originally Posted by schamsy View Post
Why would I get 42 lb injectors? I'm shooting for 300hp not 500. My truck would get 3 mpg and would smoke like a diesel cmon now.
No, if your truck is tuned properly, it will NOT smoke and get far better than 3 mpg's. I have 62's in mine and it runs no different than the 42's, 30's and 19's I once had in it before, under normal driving conditions...again, it is tuned properly for these injectors and the MAF that I'm running.

Running an FMU will work Ok if your factory air meter doesn't run beyond the range of the ECU. If it does, then the motor will go lean in a hurry, plain and simple.
__________________
Matt C.
Supercharged, Intercooled, FAST XFI
Reply With Quote
  #15 (permalink)  
Old 08-12-2011, 01:50 PM
phil6608's Avatar
phil6608 phil6608 is offline
Post Fiend
 
Join Date: Jan 2007
Location: Stanton DE
Posts: 18,157
phil6608 has a brilliant futurephil6608 has a brilliant futurephil6608 has a brilliant futurephil6608 has a brilliant futurephil6608 has a brilliant futurephil6608 has a brilliant futurephil6608 has a brilliant futurephil6608 has a brilliant futurephil6608 has a brilliant futurephil6608 has a brilliant futurephil6608 has a brilliant future
My first blower kit was an AED (Allen Engine Development) kit with 5 PSI and used an FMU with the 19# injectors. No computer tuning.
Did it work? Yes.
But it worked a lot better when I upgraded to 42# injectors and a 90mm MAF with a custom tune.
I have since moved on and am running 60# injectors( different setup) and still get 14.5 MPG on the highway.
Good luck .
__________________
( Phil )2003 SuperCrew: JLP Built Lightning block/Stage 3 heads and cams.
L-conversion/Kenne Bell upgrade blower at 16PSI/BTS,4R100 tranny/100 shot nitrous.
594HP/620TQ Without the Nitrous 1.68 60' time/11.76 @ 116.17 with the 100 shot.
Join the the Delaware Chapter, HERE
Reply With Quote
Old 08-12-2011, 01:50 PM
Reply

Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Supercharger, Turbocharger, Nitrous Oxide & Water/Methanol Injection

Tags
1997, 351, 42lb, 46, 5psi, 73, boost, f150, ford, geting, injectors, lbs, mustang, psi, tune, turbo, v8

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On
Forum Jump



All times are GMT -5. The time now is 12:14 AM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup