1. Welcome to Veloster Forum: Hyundai Veloster / Veloster Turbo Forums – General discussion forum for Hyundai Veloster

Results 1 to 3 of 3

Thread: Muffler delete mpg decrease?c

  1. #1
    Junior Member
    Join Date
    Apr 2019

    Question Muffler delete mpg decrease?c

    Hello friends of the internet

    I, dolan rodstick, own a 2014 veloster turbo that is really pretty. Quite recently I have modified it to have 2 spacers on the exhaust. I have done this to make the car louder. I put the spacers right before the muffler. With this I have noted some minor decrease in gas mileage. After some research I have also noted that this could be due to the lack of back pressure in the system therefore changing the dynamics of the computer contrived eve valve. I was wondering if anyone know if the catalytic converter was the main source of back pressure or the muffler itself. I am also asking for any of your own experiences in this topic and advice. Thanks

    Duck out.

  2. Remove Advertisements
    Hyundai Veloster

  3. #2
    Junior Member
    Join Date
    Apr 2019
    Meant to say computer controlled egr valve

  4. #3
    Super Moderator RPW00Mirage's Avatar
    Join Date
    Jun 2012
    Central MA
    welcome to the club!

    i don't think adding the spacers should affect mileage much. your right foot is the biggest variable in the mileage.

    that being said, a bunch of us have modified the stock downpipe (2013-2015 only), and completely removed the platinum on the SECOND cat, after the o2 sensor. the downpipe/elbow is the biggest restriction in the exhaust system.
    2012 Boston Red Veloster NA Base Manual BTRcc tuned 167whp / 138wtq SOLD!
    TK.COM CAI/catback - Nameless poly motor mount - BTRcc 89 octane tune

    2014 Vitamin-C Veloster Turbo Base Manual
    K&N panel filter - Nameless poly motor mount - Curt hitch - CF filler cap
    Hawk ceramic pads - PMS torsion bar - UNIQ front strut bar

    2001 Emerald Green Metallic Kia Rio Manual
    Overhauled suspension - H&R springs - 1Gb control arms / torsion rods

    A6D 1.6L DOHC swap complete! - new hubs/knuckles/brakes next.

  5. Remove Advertisements
    Hyundai Veloster

Similar Threads

  1. NAV: Glass pack + muffler delete or Res delete + magnaflow?
    By 16velo in forum Hyundai Veloster Intake and Exhaust
    Replies: 0
    Last Post: 05-08-2017, 08:38 PM
  2. Muffler Delete w/Magnaflow Resonator? Has anyone done this?
    By shooter in forum Hyundai Veloster Intake and Exhaust
    Replies: 4
    Last Post: 01-23-2013, 01:18 PM
  3. Muffler delete - not recommended
    By fv333 in forum Hyundai Veloster Turbo Discussion
    Replies: 40
    Last Post: 10-30-2012, 09:58 AM
  4. Muffler Delete anyone?
    By gt800 in forum Hyundai Veloster Intake and Exhaust
    Replies: 13
    Last Post: 07-06-2012, 10:56 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Powered by vBadvanced CMPS v4.1.2