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36lb or 42lb injectors

  • Thread starter Thread starter joeyd0730
  • Start date Start date Dec 31, 2005

joeyd0730

Member
May 22, 2005
130
0
16
queens, ny
Dec 31, 2005
#1
  • Dec 31, 2005
  • #1
hey all, happy holidays. i need some input. i currently have 30lb injectors on my blown 306. S-trim so 14 psi max pds of boost . producing very close to 500bhp. fmu is currently at 6:1. i have a 190 in tank with a t-rex. should i got to 36 lb injectors or 42's? i have the plates to recalibrate the fmu to 3:1 + 4:1. thanks for advice.
to many mods to list, you can basically see my mods in the pic to get a idea. thanks joe
 

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Michael Yount

Mustang Master
Apr 10, 2002
9,039
6
79
Charlotte, NC
Dec 31, 2005
#2
  • Dec 31, 2005
  • #2
Is it running out of fuel on the top - you have a/f ratio data from a wide band?
 
P

PRO50SC

New Member
Dec 28, 2003
1,012
1
0
Olney, Maryland
Dec 31, 2005
#3
  • Dec 31, 2005
  • #3
42's!! and ditch the fmu!!!
 

joeyd0730

Member
May 22, 2005
130
0
16
queens, ny
Dec 31, 2005
#4
  • Dec 31, 2005
  • #4
12.5:1
i was thinking that as well. my inline regulator has a 1:1 refrence
 
R

rogers

Founding Member
Feb 25, 2002
339
0
0
Dec 31, 2005
#5
  • Dec 31, 2005
  • #5
Get the 42's and get rid of the FMU.
 

QDRHRSE

New Member
Dec 31, 2002
1,590
0
0
Palmdale, CA
Dec 31, 2005
#6
  • Dec 31, 2005
  • #6
42 for sure. I would try to get the A/F down to 12:1. It never hurts to be a tad rich. The 1:1 regulator is not a bad idea.
 
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