wow that sounds really cool! I’m used to BMW M cars with a very trigger happy throttle so my GT55 really feels like I have to dig into the pedal to make the thing move-sounds like this would fix that.

does the device have memory-as in it remembers your last throttle position chosen on the app or do you need to set it in the app every time you get in the car?

 

It really makes the car better and for a cheap price--- oh yes it stays in the last setting as its exclusive of the Benz ecu. Our throttles are drive by wire so its essentially influencing the electronics and it Im like you- I love Sport Plus in Bimmers with the more aggressive throttle tip in.

An added side effect in the positive is that you will end up driving your car even harder and faster which will get you more exhaust notes due to the throttle change.

 

Is it enough to scratch the itch for the E Performance?

 

Yes LOL

 

Haha, money back in the pocket then

 

Aint that the truth

The Piggyback got me that extra power too-- I actually have quite a few roads and express ways where I can exercise this car to the relative limit. The AWD system is rather incredible too; is it better than my CS's X drive?? I dont know about that- BMW makes some rapid launchers as of late.

 

Glad to hear you found renewed joy with the C192 GT 63 non E-Performance model.

 

LOL I wouldnt say renewed

Id say

Add On JOy

 

I see.

 

Lot of companies use crank hp which doesn't really matter. What matters is the 120hp gain over stock. Just interested in the delta. 3k for a 120hp is cheap. 120 hp on say my mclaren will be 25k

 

What matters to me is before and after street tests

My comment about renntech is knowing them for 20 plus years and how they measure... you said 120 hp over stock thats crank LOL that does matter cause its a pack based on random correction. But agree its about a delta-- I used to run my crap e55 at famoso and on paper it was way less but in the real world it was a rip. We are on the same page but I just dont like how RT gouges for shi t

120 RT is ehhhh via crank for a piggy for 3800 bucks.

I need a dme tune

 

they dyno the car prior to the tune to get whp. They then dyno the car after the tune. The difference between before and after is 120 hp gain. Not sure what converting that number to crank hp has anything to do with the quality of the tune. I have one of the top 5 shops in the US a few miles from me. Pretty much all they do is tune. They will do a full custom tune or a box tune ( written by another manufacturer). Their custom tune pretty much nets the same gains as renntech. When discussing a tune for my gt63 they said I would be better off purchasing the renntech.

I have been building engines since high-school 40 years ago. Ive been lucky enough to have had my hands on most brands one way or the other over those 40 years. I always rent a dyno so I too can get a before and after. Like most tuners we arent so much concerned about the hp number the dyno spits out because all dynos measure different. All we are concerned about is the delta as this is my report card so to speak.

a custom tune from M engineering ( probably the best tuners in the nation specializing in exotic cars) for the gt is around 7500$. Renntech at 3800$ is a bargain in comparison. Dme tunes are around 3k so 800 cheaper than renntech. There are endless parameters in these tunes. It's not just about the feel in the *** dyno but more about how it all works together. All tuners kind of have their traits. Dme tunes tend to bring the torque in very low in the rpm range which feels very good via the *** dyno. However dumping full tq in under 3k has a tendency to bend rods. This is because its a bigger load than what the rods were designed for. On some brands this doesn't hurt the rods because they are more robust than the next brand. Some manufacturers are super vulnerable to bending rods via dme, mclaren is one of them. With all this said renntech brings their tq in much higher than dme which is much easier on rods. I have personally torn down motors that were tuned and running fine but had bent rods in it. They can run for a while bent slightly but will eventually break then blow a 12 in hole in the block.

When shopping for a tune the last thing you want to do is look for a cheaper one. You definitely get what you pay for. Renntech puts probably a dozen safeties in to protect the motor where dme does not put but just a few in. These kind of things are time consuming to write the code. This adds $ to the sales price hence you get what you pay for. Hell you can get a big hp tune for 1500$ but it will only be a matter of time before it pops a motor.

Hope all this makes sense.

 

Have you talked to to anyone with the Renntech tune for this car? I was considering it but the tech at the dealership said he had heard there have been some gremlins in the tune and I should what for a Weistec solution.

 

thanks agree with all and the street rules vs those people who love their dyno sheets LOL. My point which I didnt really articulate well was that for 120 hp crank via piggy = alot for 3800 and change.

I have the M Engineering tune on my GTS- its great. I will never go cheap on an actual DME tune but RT is using a piggy so I just went with the safe plug and play walk away one for now. Small boost changes for me- I am not into the heavy mods on cars. I just do the BPU's.

 

Its a piggy back tune only--- no one I know has done a legit dme tune yet on these cars. There might be someone out there but not sure its tried and tested yet for quality.

https://www.renntechmercedes.com/ind...-192-63-detail

 

I did a few months back, no mention of any issues but not so sure they would share that.

 

The tuning shop near me has been doing their tune for our cars since March if my memory is correct.

 

Did you pull the trigger? Whats the shop name ?

 

which XLR throttle product did you buy? I couldn’t find it for our car on the site and when I emailed them, RaceChip responded saying they don’t make the throttle product for our cars yet

 

Thats crazy LOL...

My guy-- RG Sport in Irwindale, CA got the unit, harness, and programmed it (C192 63 engine)... If Racechip gives you more grief, you can all and ask for Jonathan.

https://www.racechip.us/shop/mercede...-584lb-ft.html

 

I have not. Waiting on a back up ecu.

 

Added the Renntech EVM module today--- as you most know our valves on the exhaust are not fully open unless higher rpms and WOT. The module leave the valves fully open all the time or you can go back to OEM. I programmed the options on my homelink for convenience.

Thoughts:

You can definitely hear more rumble and pronounced bangs/pops under mid load but main gain is the throaty sounds at lower rpms. Its probably about a 20% bump in overall dramatics from the exhaust and worth the price to me. It retails for 799 and the install is easy: Rack, lift, remove the felt cover, install the wiring plugs on both valve controls (like a bypass), tuck and tie the wires, replace the felt cover, de rack. Maybe 30 minutes tops.

Our valves are around 75% open where its still slightly closed off and this just makes it less obtrusive or 100% flow based on the valve still being there. Of course no valve would be the best since there would be no metal in the pipes at all but that will trigger a cel.

 

bless us with some video please!!!

 

Yes please!

 

Just ordered it, on sale today