tune discussion - RennTech vs Weistec
Junior Member
Joined: Jul 2020
Posts: 61
Likes: 11
08 ML63
I know its a older thread but I ordered the Weistech tune over the weekend. I purchased my 2014 S550 last week and Its getting delivered later this week, super excited to get it. I knew I'd want to do the extra power so I got in on the 15% off sale they just had. I actually didn't even realize how tuneable the S550 was until after I purchased it. I had been debating between the S550 and S63, coming from a ML63 currently. I figured I'd save a little on the S550, I mainly just want the extra power which this tune can achieve.
Junior Member
Joined: Jan 2012
Posts: 33
Likes: 0
2010 E550 coupe
I know its a older thread but I ordered the Weistech tune over the weekend. I purchased my 2014 S550 last week and Its getting delivered later this week, super excited to get it. I knew I'd want to do the extra power so I got in on the 15% off sale they just had. I actually didn't even realize how tuneable the S550 was until after I purchased it. I had been debating between the S550 and S63, coming from a ML63 currently. I figured I'd save a little on the S550, I mainly just want the extra power which this tune can achieve.
Junior Member
Joined: Jul 2020
Posts: 61
Likes: 11
08 ML63
Weistec direct just had a sale for memorial day, under $1600 shipped. My ML63 already felt fast to me in stock form, and the torque numbers will be nearly 300 less compared to the tuned sclass which is wild. Its gonna be a rocket ship to me and weighs less.
MBWorld Fanatic!
Joined: Sep 2014
Posts: 1,173
Likes: 431
S600
Senior Member
Joined: Mar 2024
Posts: 266
Likes: 111
From: Alien Town Roswell NM
2014 S550
Have had my S550 for 7 weeks now and installed the Weistec tune 2 weeks ago. They honored the sales price afterwards so now I have their filters coming.
Car feels great after the tune but coming from a 800whp car, it still feels like it's missing 300hp....
I enjoy the S class more because it's more refined and with the recent Android Auto installation, it's more user friendly.
In the future I'll most likely set up my HP Tuners to see what more might be available but I'm happy with it the way it is. Fun,,,,yes,,,,rocketship,, ,no....relatively speaking....
Car feels great after the tune but coming from a 800whp car, it still feels like it's missing 300hp....
I enjoy the S class more because it's more refined and with the recent Android Auto installation, it's more user friendly.
In the future I'll most likely set up my HP Tuners to see what more might be available but I'm happy with it the way it is. Fun,,,,yes,,,,rocketship,, ,no....relatively speaking....
Junior Member
Joined: Jul 2020
Posts: 61
Likes: 11
08 ML63
Have had my S550 for 7 weeks now and installed the Weistec tune 2 weeks ago. They honored the sales price afterwards so now I have their filters coming.
Car feels great after the tune but coming from a 800whp car, it still feels like it's missing 300hp....
I enjoy the S class more because it's more refined and with the recent Android Auto installation, it's more user friendly.
In the future I'll most likely set up my HP Tuners to see what more might be available but I'm happy with it the way it is. Fun,,,,yes,,,,rocketship,, ,no....relatively speaking....
Car feels great after the tune but coming from a 800whp car, it still feels like it's missing 300hp....
I enjoy the S class more because it's more refined and with the recent Android Auto installation, it's more user friendly.
In the future I'll most likely set up my HP Tuners to see what more might be available but I'm happy with it the way it is. Fun,,,,yes,,,,rocketship,, ,no....relatively speaking....
Senior Member
Joined: Mar 2024
Posts: 266
Likes: 111
From: Alien Town Roswell NM
2014 S550
Road Top carplay unit. $220 and easy installation.
I don't see a need for a pedal thingy....if ya want more response, push it farther. Just my opinion.
Sport mode has decent response.
I don't see a need for a pedal thingy....if ya want more response, push it farther. Just my opinion.
Sport mode has decent response.
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