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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

injectors for 400rwhp?

  • Thread starter Thread starter mooktank
  • Start date Start date Oct 20, 2004
M

mooktank

New Member
Jul 7, 2004
237
0
0
Oct 20, 2004
#1
  • Oct 20, 2004
  • #1
what injectors should i run for 400rwhp on a 5.0 with 8-10lbs from a turbo. Im thinking 30-36. I dont want to go too big becuase of running rich at idle stories ive heard.
 

K.C.90gt

Founding Member
Jun 5, 2000
379
0
0
Detroit Area, MI
Oct 20, 2004
#2
  • Oct 20, 2004
  • #2
im running 36 lbrs and hit 450RWHP, but thats almost maxing them out, so if you want 400, i would recommend at least 36. if not 42 for future. Just get a good tune and idle should not be a problem.
 

CRASH7772

Member
Apr 27, 2003
401
1
16
NH
Oct 20, 2004
#3
  • Oct 20, 2004
  • #3
http://www.pro-flow.com/tech info/sizing.htm
 
A

autoXr1

Founding Member
May 3, 2001
1,838
0
0
Michigan
Oct 20, 2004
#4
  • Oct 20, 2004
  • #4
mooktank said:
what injectors should i run for 400rwhp on a 5.0 with 8-10lbs from a turbo. Im thinking 30-36. I dont want to go too big becuase of running rich at idle stories ive heard.
Click to expand...

You will have the ECU reprogrammed, won't you? Nod your head yes. It's all in the tune. Either a programmable system like a PMS, TwEECer, or the like OR have a professional do it with a "chip". Having a "calibrated" MAF for your combo is just the beginning...unfortunately that's were a lot of folks stop, and end up with these little tuning issues (like rich, lean, idle, and so on) and disappointing power output. If you are running boost, then use the 36's and tune the injector pulse time up/down for the correct A/F ratio.
 

Jkstang78

Founding Member
Oct 14, 2002
1,510
1
38
long island N.Y.
Oct 20, 2004
#5
  • Oct 20, 2004
  • #5
Does anyone know if this is flywheel or to the rear wheels. Because if this is to the Rear wheels then I can keep my 24lbs and sell the 42's I pick up.

 

Jkstang78

Founding Member
Oct 14, 2002
1,510
1
38
long island N.Y.
Oct 20, 2004
#6
  • Oct 20, 2004
  • #6
Does anyone know if this is flywheel or to the rear wheels. Because if this is to the Rear wheels then I can keep my 24lbs and sell the 42's I pick up.

Injector Sizing photo
 
M

mooktank

New Member
Jul 7, 2004
237
0
0
Oct 20, 2004
#7
  • Oct 20, 2004
  • #7
yeah im lookin at the Tweecer right now and im liking it. Something i can plug my laptop into will be pimp.
 

Grn92LX

Fidanza Man!
Founding Member
Jan 14, 2001
6,819
64
129
New York
Oct 20, 2004
#8
  • Oct 20, 2004
  • #8
Jkstang78 said:
Does anyone know if this is flywheel or to the rear wheels. Because if this is to the Rear wheels then I can keep my 24lbs and sell the 42's I pick up.

Injector Sizing photo
Click to expand...


Jay, that chart is a joke. With what you have planned, the 42lb is near perfect. The REAL world and some wrong internet chart are 2 completely different things! With what im planning im hoping to get by with a 30lb but I think its gonna be close.
 

Michael Yount

Mustang Master
Apr 10, 2002
9,039
6
79
Charlotte, NC
Oct 20, 2004
#9
  • Oct 20, 2004
  • #9
36's will probably be fine; 42's would be plenty; but you're gonna have to be chipped/twEECer'd to make things work really well - especially if it's a street car.
 
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