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 people found this 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:

F-150

Looking for a Used F-150 in your area?

CarGurus has 200,117 nationwide F-150 listings starting at $1,300.

ZIP:

Ford F-150 Experts

  • #1
    OJ
    Reputation
    10,850
  • #2
    dandyoun
    Reputation
    4,970
  • #3
    tennisshoes
    Reputation
    3,890
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,869 Great Deals out of 159,082 listings starting at $1,200
Used GMC Sierra 1500
816 Great Deals out of 60,745 listings starting at $1,495
Used Ford F-250 Super Duty
470 Great Deals out of 37,816 listings starting at $1,999
Used Toyota Tundra
473 Great Deals out of 37,989 listings starting at $1,750
Used Dodge Ram 1500
342 Great Deals out of 9,284 listings starting at $1,800
Used Toyota Tacoma
446 Great Deals out of 50,197 listings starting at $2,695
Used Ford Mustang
297 Great Deals out of 40,392 listings starting at $1,312
Used Chevrolet Colorado
289 Great Deals out of 39,212 listings starting at $1,500
Used Nissan Titan
233 Great Deals out of 22,034 listings starting at $2,995
Used Ford F-350 Super Duty
354 Great Deals out of 21,844 listings starting at $3,995
Used Ford Explorer
943 Great Deals out of 71,545 listings starting at $695
Used Chevrolet Silverado 2500HD
364 Great Deals out of 29,588 listings starting at $2,718
Used Chevrolet Tahoe
675 Great Deals out of 38,596 listings starting at $995

Used Cars For Sale

2018 Ford F-150 XLT SuperCab 4WD For Sale
4,959 listings starting at $28,838
2017 Ford F-150 XLT SuperCab 4WD For Sale
285 listings starting at $27,995
2016 Ford F-150 XLT SuperCab 4WD For Sale
7 Great Deals out of 538 listings starting at $19,600
2015 Ford F-150 XLT SuperCab 4WD For Sale
15 Great Deals out of 911 listings starting at $18,500
2014 Ford F-150 XLT SuperCab 4WD For Sale
17 Great Deals out of 508 listings starting at $12,450

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.