Hello Everyone,

Haven't posted here in a while. Happy to be a part of this group again after a long time.

Recently purchased an S63. Pic added below. I got the Eurocharged (EC) ECU tune on it, upgraded the air filters on it, and added a muffler delete. No TCU tune. Car is responsive (and loud), but there is definitely some throttle lag. I'm thinking of getting a Pedal Commander to make the car feel more responsive. Totally get that it won't give me more hp or drastically make my 0-60 faster. But the delay in the throttle response, despite the EC tune, bothers me sometimes when I punch the gas. So is $270 (10% discount) worth it for me to feel that the car is more responsive? I guess if it makes a considerable difference in the throttle response, then to me, yes, it will be worth spending that money.

Question is, will it interfere or mess up my EC tune somehow? I do have their hand held module, so I can always load up the EC tune again if I need to. But I wanted to see if anyone else on here has an EC tune and a Pedal Commander (or Sprint Booster) and if they have had any issues (check engine light, etc). I have read their installation instructions (keep key away from the car, don't change modes while driving, etc), so assuming I adhere to all those things, has anyone:

1) Felt a considerable difference in throttle response on their S63 with one of these devices?
2) Any issues or complications from using it with an EC tune?

I know that I can do TCU tune instead, but that's another $2000 on a car that I've already spent considerable money on (got it wrapped satin black, put the EC tune on it, had it lowered, after-mkt rear entertainment system, muffler delete, PPF and ceramic coated all over, etc). And EC says a TCU tune will at best decrease my 0-60 by 0.1 sec.

My goal isn't to beat Hellcats and 911 Turbos with this S63. I wanted to find a balance of a really luxurious, large vehicle capable of carrying 4 people in comfort, but also feel responsive and quick when needed. So to spend $2000 on a TCU tune for me feels unnecessary given the 0.1s gain in 0-60. If the car "feels" hella more responsive by spending $270 on a Pedal Commander, I prefer going down that route as long as no one here has had any long term issues or their tune didn't get impacted.

Thanks in advance!

 

Anyone?

 

I would look in the E63 forum for that kind of info, similar drivetrain but more tuner and modder oriented group.

 

Are you looking to improve throttle response generally, or off the line 0-60? I don't believe the Pedal Commander will mess up your tune, but I don't believe it will improve the delay off the line either. Maybe it will help generally. The Pedal Commander remaps the output of the gas pedal sensor to fool the ECU into thinking you've pressed the pedal further or faster than you actually did. The problem is, the off the line delay on your S63 isn't from throttle mapping, it's from torque limiters in the TCU. The Pedal Commander won't overcome the torque limiter any more than you stomping the pedal will.

 

I actually have a Weistec TCU tune (2k usd) on my S63 Coupe. It improved the transmission slightly. Maybe little bit faster shifting, but don’t expect miracles. If I could, I would skip this mod, but I needed to increase torque limit as I am heavily modded.

 

Reset the battery overnight. It will clear the adaptations (and the lag)

mb learns the driving habits and adapts (annoying etc)

tcu tune will help as indicated above and will make a much bigger difference than the pedal commander (which just tricks ecu by changing voltage of the pedal)

 

I have Race Chip on my car with the sprint booster and the car drives great without any issues. The SB alters the throttle by wire system and has nothing to do with the ECU