| From | Message |
MidnightMagic
GenIII
 
10/11/2002
13:46:11
|
 Subject: Fuel Press. Reg
IP: Logged
Message:
is there any way to up the fuel press. i am haveing a leanin out prob at WOT. i have the 65mm tb from hughes engines.
It's Gumbo night every night with all the rice i cook!
|
CW
GenIII
10/11/2002
14:07:48
|  RE: Fuel Press. Reg
IP: Logged
Message:
How do you know you are running lean? Most have to much fuel with your ammount of mods.
4.7 HO, CW style
2001 4.7 5sp 3.92 LSD
Ported 68mm TB, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" Z-tube, Roadmaster active suspention, Removed Third cat, Electric fan Convertion, HO cams, Robert shaw 180 therm, HO intake manifold.
|
MidnightMagic
GenIII
10/11/2002
19:10:13
|  RE: Fuel Press. Reg
IP: Logged
Message:
just seems i have more acc at part throttle then at WOT. like it starves or somethin right around 60-80?
It's Gumbo night every night with all the rice i cook!
|
CW
GenIII
10/14/2002
19:23:02
| RE: Fuel Press. Reg
IP: Logged
Message:
If you can get it dynoed, then put it on the wide band O2 sensor. That way you will know for sure.
4.7 HO, CW style
2001 4.7 5sp 3.92 LSD
Ported 68mm TB, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" Z-tube, Roadmaster active suspention, Removed Third cat, Electric fan Convertion, HO cams, Robert shaw 180 therm, HO intake manifold.
|
wwbmopar
GenII
10/16/2002
07:44:15
|  RE: Fuel Press. Reg
IP: Logged
Message:
I agree. I had a Ramcharger with a 360 4bbl that had the same exact problem, better acceleration at part throttle. Turned out the stock cam was worn and could not deal with the increaed fuel the thermoquad put out at WOT. Although I dont think its you cam, you don't have near the miles my Ramcharger had. Check your plugs if they look like they are getting fouled faster than normal, you are definantly rich and it may be time for a computer upgrade.
bill
|
midnightmagic
GenIII
12/12/2002
15:42:36
| RE: Fuel Press. Reg
IP: Logged
Message:
i dynoed it and it read 220rwhp at fuel cut out which is about 4200 rpms didnt have a o2 reader tho
It's Gumbo night every night with all the rice i cook!
|
Tom Slick
GenII
12/13/2002
09:32:04
| RE: Fuel Press. Reg
IP: Logged
Message:
you can replace the factory fuel pressure regulator(the one on the top of the fuel tank) with an elbow (I'm have some billet ones made), and then install an adjustable regulator under the hood...
I would recommend getting the Higher volume Holley fuel pump (replaces the factory one in the tank)
For boosted apps, just use a rising rate Regulator (progressive FMU) for fuel management...
why use a standard FMU and a seperate Fuel Pres. Regulator when you can you can just use the Rising Rate Regulator(IT works great on supercharged and turbocharged applications)
All of this is pretty easy to do, too...
I'd be glad to answer any other questions on this...
Later!
Tom "Slick"
96 Dakota Sport 5.2 RC SB
|
MikeD
*R/T*
12/13/2002
10:49:28
| RE: Fuel Press. Reg
IP: Logged
Message:
Tom...does it take awhile for the PCM to learn the new pump? I just had my Holley high flow pump installed a couple days ago. Do I have to reset the PCM for just that mod?
~Mike~
Get In...Sit Down...Shutup...& Hangon
|
Tom Slick
GenII
12/16/2002
21:42:21
| RE: Fuel Press. Reg
IP: Logged
Message:
Nope... the PCM doesn't have to be reset and there is no learning curve since the pressure is still regulated to 49psi...
The Holley pump allows more volume while keeping the proper pressure...
IF you changed the fuel pressure, then the comupter would have to learn and adapt to the change...
Later!
Tom "Slick"
96 Dakota Sport 5.2 RC SB
|
| | P 1 |
|
Post a reply to this message:
Username Registration: Required
Posting: Registered Users and Administrators only
|
