What size fuel injector would I need?

Asked by Feb 24, 2016 at 06:38 PM about the 2005 Ford F-150 XLT SuperCab 4WD

Question type: Car Customization

I put a volant cold air intake with a bbk
80mm throttlebody on my stock 05 f150
5.4l. Wondering aproximately what cc
injector I should install to properly adjust
the air/fuel ratio?

5 Answers

10

Adam, You've increased the air flow but remember you have a closed loop system with an oxygen sensor in the exhaust that will tell the computer to adjust the fuel flow (within limits) to achieve the correct a/f ratio over the driving range.

Ah ok. So I may not need to change injectors? Would a dyno run while monitoring the ratio give me the right answers/specs to know if I need to?

10

Yes, you may not need to change the injectors as the computer would tell the injectors to open longer to achieve the correct a/f ratio under most normal driving conditions. If you have the ability to do a dyno run and monitor a/f ratio (or O2 sensor signal) that would be good to do. One area that may be problem would be high rpm & WOT where there may be a possibility the injectors can't deliver enough fuel considering the additional air flow you've added. This is a performance area where you want a rich a/f ratio because of high power demands and high load conditions. Do the dyno run if you can.

1 out of 1 people think this is helpful.

Thanks! I'm going to call and schedule one

10

Adam, More info. I went to Autorama in Detroit at the end of Feb. and came across an injector supplier named AUS Injection, Inc. Check them out at www.ausinjection.com This info does not constitute an endorsement as I've never done business with them.

Your Answer

Add photo

Related Questions

  • tire size 5 answers

    I want to put a 2" leveling kit on my 2002 f150 I now have 285 70 17 tires, I want to go with a wider tire size and taller if needed would like info on tire sizes with out needing spacers.

    2002 Ford F-150 XLT SuperCab 4WD SB

    -

    Car Customization

  • Need more POWER! 33 answers

    I have the 302 (5.0) V8 in my 1994 Ford F-150, and i want more HP and torque. What should i start with if i'm on a budget? And if i'm not on a budget what should i do?

    1994 Ford F-150 XLT Extended Cab LB

    -

    Car Customization

  • Would you be able to take a older F-150s wiring harness and plant it into a newer one? 2 answers

    i have a 92 Flareside and i want to switch it from fuel injected to carburetion. I know i have to switch the fuel pumps and the intake and stuff to do so but i am worried that if i use the original ...

    1992 Ford F-150 XLT Lariat Stepside SB

    -

    Car Customization

  • any way to add fuel filler to passenger side of 2005 f150 xlt 4x4 35gal tank pu? 3 answers

    Cross country trip with travel trailer made many stations impossible to pull into right side of pumps. Very inconvient. 22ft trailer would not manuver thru station or cars around pumps. Need passeng...

    2005 Ford F-150 XLT SuperCab 4WD

    -

    Car Customization

  • Dangers in replacing injectors? 2 answers

    Is there danger in replacing fuel injectors? I do my own repairs and maintenance and have had to use haynes and chilton to work through most of my repairs. When I looked up how to replace the injec...

    2003 Ford F-150 XL Extended Cab 4WD SB

    -

    Maintenance & Repair

F-150

Looking for a Used F-150 in your area?

CarGurus has 207,752 nationwide F-150 listings starting at $1,000.

ZIP:

Search Ford F-150 Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Ford F-150 Experts

#1 OJ
OJ
Reputation 6,720
#2 dandyoun
dandyoun
Reputation 4,140
#3 tennisshoes
tennisshoes
Reputation 2,470
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,515 Great Deals out of 152,117 listings starting at $1,500
Used GMC Sierra 1500
974 Great Deals out of 60,125 listings starting at $1,299
Used Dodge Ram 1500
500 Great Deals out of 13,071 listings starting at $1,495
Used Ford F-250 Super Duty
490 Great Deals out of 43,316 listings starting at $1,900
Used Toyota Tundra
660 Great Deals out of 28,287 listings starting at $2,798
Used Toyota Tacoma
707 Great Deals out of 31,948 listings starting at $2,750
Used Ford Mustang
534 Great Deals out of 42,736 listings starting at $1,699
Used Nissan Titan
248 Great Deals out of 15,813 listings starting at $3,000
Used Ford Explorer
1,071 Great Deals out of 71,554 listings starting at $1,000
Used Chevrolet Tahoe
820 Great Deals out of 27,815 listings starting at $1,700
Used Ford Ranger
195 Great Deals out of 6,752 listings starting at $1,595
Used Chevrolet Colorado
294 Great Deals out of 17,852 listings starting at $1,995
Used Jeep Wrangler
511 Great Deals out of 18,411 listings starting at $2,500

Used Cars For Sale

2017 Ford F-150 XLT SuperCab 4WD For Sale
672 listings starting at $30,698
2016 Ford F-150 XLT SuperCab 4WD For Sale
3,125 listings starting at $26,345
2015 Ford F-150 XLT SuperCab 4WD For Sale
5 Great Deals out of 288 listings starting at $23,488
2014 Ford F-150 XLT SuperCab 4WD For Sale
29 Great Deals out of 705 listings starting at $14,999
2013 Ford F-150 XLT SuperCab 4WD For Sale
28 Great Deals out of 887 listings starting at $12,990