Fuel Pump Limitations?
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 4 of 4
2009-2014 Cadillac CTS-V Performance Mods Discussion, Fuel Pump Limitations? in Cadillac CTS-V Series Forum - 2009-2014; Hey guys, I've been looking around for last few days and for the love of me can't find stock fuel ...
  1. #1
    camslambam is offline Cadillac Owners Member
    Automobile(s): CTS-V
    Join Date
    Jan 2013
    Age
    29
    Posts
    9

    Fuel Pump Limitations?

    Hey guys,
    I've been looking around for last few days and for the love of me can't find stock fuel pump limits.

    I'm running 850 injectors. 606/575 12psi on 87 octane. 640/600 on race fuel.

    Car with all nannies off seems to have sluggish 1-2 shift (paddle shifter). It seems almost like car goes into 1.5 gear before finally going into 2. Very noticeable sputter. Not sure if pump is cutting off at higher rpms or what?

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    Da V-Man is offline Cadillac Owners Fanatic
    Join Date
    May 2012
    Posts
    217

    Re: Fuel Pump Limitations?

    Sounds like you're hitting the rev limiter fuel cutoff. Try letting the tranny shift itself in sport mode.

  4. #3
    cruiser68 is offline Cadillac Owners Enthusiast
    Automobile(s): 2011 CTS-V A6 Sedan Modded :)
    Join Date
    May 2011
    Location
    Chicagoland
    Posts
    593

    Re: Fuel Pump Limitations?

    87 octane ...ugh

    On my latest round of mods my tuner said I was dropping fuel pressure at wot on the dyno. Said he could tune around it or add a bap. I chose the bap. I think he said it was dropping to 55psi. Has run fine for the couple weeks I've been driving it. No track time yet this season.

    Mods are Kooks headers w/ cats into stock mufflers, intake, LS7TB, GT11cam and springs, 2.5/9.1 pulley, id850, HX and pump, norcal HX box. 610whp/606wtq

  5. #4
    wait4me's Avatar
    wait4me is offline Cadillac Owners Connoisseur
    Automobile(s): 11v,2 09 v's,2 05 v's,5 GTM supercars,viper,volt,2012 karma
    Join Date
    Jan 2009
    Location
    warsaw indiana
    Posts
    2,994

    Re: Fuel Pump Limitations?

    Your question has several answers, and those answers depend on several different outcomes depending on the tuners abilities.. We have made 1000RWHP with the stock pumps. However, people will argue with that..

    Voltage is a main contributor to the fuel pumps output, as well as the internal fuel regulator. Changing those things will net totally different max amounts of fuel. Also diameter of tubing for those said pumps as well...

    If you get the voltage near 17-20V and modify the fuel regulator in the tank, you can get 900s no problem without pressure drop if you do it correctly.

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting