ECU upgrade - MBWorld.org Forums

06-20-2016 | 12:33 PM

#1

tdt5648

Thread Starter

Junior Member

Joined: Jan 2010

Posts: 50

Likes: 1

From: DFW

2015 GL550, 2015 Ghibli S4

ECU upgrade

Has anyone done an ECU upgrade (eg Renntech) on their GL550? Is it worth it? Are the horsepower gains significant? What is the drop in MPGs?

Reply Like

06-20-2016 | 07:06 PM

#2

fabbrisd1

MBWorld Fanatic!

Joined: Nov 2012

Posts: 6,131

Likes: 1,105

A gaggle of MB's

Yes - I have customers use the RennTech ECU upgrade - they LOVE it - and no CEL triggers either.

They have not mentioned mileage at all - they just love to drive their GL550 more !

Reply Like

06-21-2016 | 12:42 PM

#3

EC_MB2016

Newbie

Joined: Jan 2016

Posts: 7

Likes: 0

From: Long Island

GL550, MDX, S2000

man, I've been thinking about this as well. Is there a noticeable difference with the upgraded ecu? Does it pull like the amg with it?

Reply Like

06-21-2016 | 12:49 PM

#4

Speedriven1

Banned

Joined: Sep 2010

Posts: 2,542

Likes: 72

From: Palatine, IL

Speedriven

All the 550 tunes pull strong. You should check out our summer pricing on ECU tune + IC upgrade, as well.

http://speedriven.wpengine.com/2016/...rformance-pkg/

Reply Like

The following users liked this post:

srfrboy (11-24-2016)

Reply Subscribe

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)