fuel pressure regulator causeing rich and lean problems?

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Old Aug 3, 2006 | 06:26 AM
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Default fuel pressure regulator causeing rich and lean problems?

i've been trying all week to get my car running well and cant quite seem to dial it in...

someone mentioned to me that my fuel pressure regulator may be bad because it sounded similar to there problem..

my AFR at idle is around 10, and past 3K is about 15+

i make changes on my map but it doesnt do any good...

anyone have any ideas? setup below

D16Z6, stock CR
eagle rods
vitara pistons
ARP headstuds
Garret 50/63 with HPC coating
RC550 injectors
UR 8lb flywheel
stage 4 6puck
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Old Aug 3, 2006 | 07:36 AM
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Default Re: fuel pressure regulator causeing rich and lean problems? (WolfGod)

anyone
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Old Aug 4, 2006 | 10:14 PM
  #3  
La EF-8's Avatar
 
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From: Bossier City, LA, USA
Default Re: fuel pressure regulator causeing rich and lean problems? (WolfGod)

im in the same boat man im running to rich, so hopefully i can get it fixed so i can get to riding dirty.. lol
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Old Aug 9, 2006 | 11:02 AM
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Default Re: fuel pressure regulator causeing rich and lean problems? (WolfGod)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WolfGod &raquo;</TD></TR><TR><TD CLASS="quote">i've been trying all week to get my car running well and cant quite seem to dial it in...

someone mentioned to me that my fuel pressure regulator may be bad because it sounded similar to there problem..

my AFR at idle is around 10, and past 3K is about 15+

i make changes on my map but it doesnt do any good...

anyone have any ideas? setup below

D16Z6, stock CR
eagle rods
vitara pistons
ARP headstuds
Garret 50/63 with HPC coating
RC550 injectors
UR 8lb flywheel
stage 4 6puck</TD></TR></TABLE>
What program are you using? Send me your .bin and I'll have a look.
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Old Aug 9, 2006 | 11:08 AM
  #5  
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From: Kitchener, On, Canada
Default

You are using a wideband O2 to help you tune, right? Using a stock O2 and a crappy AF gauge will never, ever, be right.
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Old Aug 9, 2006 | 11:52 AM
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Default Re: (ludesrv)

yes im useing a wideband

gimme an e-mail addy and i'll send you my bin to take a look at
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Old Aug 9, 2006 | 11:53 AM
  #7  
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Default Re: (WolfGod)

btw i've tried maps on both uberdata and crome
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Old Aug 9, 2006 | 11:59 AM
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Default Re: (WolfGod)

what kind of FPR are you using? I had an AEM and that thing sucked. I'd have 28 psi sometimes and 48 psi other times. Very inconsistant and leaked like crazy. Put a stocker on and no more issues.
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Old Aug 9, 2006 | 06:51 PM
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Default Re: (QuarterMileMaster)

my fuel pressure is at a constant 60 like it's always been.. i ordered a new adjustable FPR and it should be here tomorrow but i'll be 200 miles away picking up a family member so i cant work on it till friday

also friday i have someone comeing with a chipped ECU to test if mine is bad if that FPR doesnt work
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Old Aug 9, 2006 | 10:16 PM
  #10  
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Default Re: (WolfGod)

the only thing drasticly changed in my setup was my ECU

i was running a hondata S200B with a street tune and switched to a PO6 converted to v-tec running uberdata or crome (whichever i can get to work first, lol)

i've thought about the ECU being bad because the chips that came with it were as well, so i have someone bringing one friday to test as well
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Old Aug 10, 2006 | 04:52 AM
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Default Re: fuel pressure regulator causeing rich and lean problems? (WolfGod)

What type of regulator are you using? if it is one of those retro-fitted stock regulators (B&M), it will cause fuel pressure to drop under high load.

A good regulator that I can vouch for is a Holley regulator.
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Old Aug 10, 2006 | 06:58 AM
  #12  
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Default Re: fuel pressure regulator causeing rich and lean problems? (mar778c)

holley is $130 and out of my budget, i dont know what was on the setup before i got it but im fairly certin its good.. im going to test tomorrow tho
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Old Aug 11, 2006 | 02:16 PM
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Default Re: fuel pressure regulator causeing rich and lean problems? (WolfGod)

new FPR didnt change anything
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