Express, Savana & G-Series Vans Offered in both a full size van, or a large box truck, the Express is the modern GM workhorse.

Chevrolet Express
Platform: GMT Van

removing the stock muffler,resonator,and air filter box

Thread Tools
 
Search this Thread
 
Old May 13, 2020 | 3:46 PM
  #1  
johnnythunder's Avatar
Thread Starter
CF Beginner
 
Joined: Aug 2019
Posts: 10
Likes: 3
From: central florida
Default removing the stock muffler,resonator,and air filter box

will removing these parts and replacing them with after market parts hurt mpg??
Reply
Old May 13, 2020 | 4:47 PM
  #2  
mountainmanjoe's Avatar
Super Moderator
 
Joined: Feb 2017
Posts: 6,207
Likes: 689
Default

most likely.

GM optimizes them for economy, emissions, and noise.
Reply
Old May 13, 2020 | 6:32 PM
  #3  
johnnythunder's Avatar
Thread Starter
CF Beginner
 
Joined: Aug 2019
Posts: 10
Likes: 3
From: central florida
Default

thanks Joe.i'll just put a quality air filter in it and leave it stock. thanks for your honesty
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Hunter5.3
General Tech
0
Jul 13, 2014 11:56 AM
joe in calif
Silverado, Sierra & Fullsize Pick-ups
2
Jul 7, 2012 2:35 AM
Mille Racer 69
Silverado, Sierra & Fullsize Pick-ups
1
Dec 30, 2011 11:50 PM
Big tiny
Silverado, Sierra & Fullsize Pick-ups
7
Jul 30, 2011 8:14 AM
s34n
Silverado, Sierra & Fullsize Pick-ups
14
Feb 16, 2010 9:49 PM




All times are GMT -5. The time now is 5:40 PM.