Glock Guru

Enlight of all the ECU/TCU drama on the forum I am looking at other options. Who out there is running the Renntech ECU unit on there C63?

What stage are you running?

Any TCU "refinements" included?

Overall lever of satisfaction?

-Troy

CynCarvin32

I hear nice things about the RENNtech ECU. I do not have a C63 so I cant comment but I hear it is very powerful and offers very good refinement (some other tuners have had issues in this department).

As for the TCU portion, RENNtech does modify the ENGINE ECU where possible to improve some issues with part throttle shifting. Now I should be clear that the shifting is not messing with the TCU. The motor has settings that control its behavior (like torque retardation) during shifts and those settings can be changed on the ECU.

First generation RENNtech software had a couple rougher spots with this part throttle shifting but its been resolved and people here have had positive comments about the product.

Their power figures for the latest version are claimed to be class leading as well.

hooleyboy

There are some C63's that were done at the shop I use in Scottsdale AZ, I'm always in the shop so I get a chance to see alot of the renntech tuned stuff that rolls in there. All of the guys with 63 renntech ECU's love it.

I have a renntech tune on my 55 and love it as well. I think with ECU headers and some small exhaust mods they got 90+whp over stock on the dyno!

Maybe go a cheaper route and get headers that are less expensive and due the exhaust mods at a custom exhaust shop and still pick up 90whp

I would say most of this power is coming from the ECU, Dyno tune that flash if you choose to go that way.

qship5

I'm running Renntech stage 2 ECU flash on my C63 and am very happy with it. I can't give you a before and after comparison since I had it put on the car before taking delivery. I can tell you the car is a real beast and as you can see from the video I posted beating an E60 M5 it is definitiely a lot faster than stock.

M-bENZ

Where ?? link please lol.

Can Drive 55

It's in this post.

https://mbworld.org/forums/3341049-post1.html

Glock Guru

Thanks for all the input. I will keep looking at all update options.


-Troy

James@ACG

Also keep in mind, that RENNtech also provides the block which allows you to switch from stock to a tuned file, allows you to check and clear faults, data log, and even stores this data allowing you to email the information to RENNtech to receive a truly custom tune for your C63.

PM or call me for pricing and more details.
JAmes

catesbym

I am totally happy with the overall driveability of the car after my Renntech tune, no difference in around town poking along.

Nail it and there is a very noticable difference over stock.

The best $$ spent on a mod that I can recall. Equivalent to turning up the boost in a turbo car.

g.smiley

The Renntech V2 unleashes full 63 engine potential no? Sorry for being lazy guys, but if that's the case, i may get it done with them since they're just up the road from me here in Boca.

I just want my engine to perform like the e/s 63. In this little monster, that's more than enough!

catesbym

I think you will find it meets your needs and you don't have to deal with doing it yourself.

Glock Guru

That sounds like something I will need to get more info on. I did not see anything on there web site about this feature(s).


-Troy

ShanSL350

+1

How does this work??

Thanks

James@ACG

It has just been recently released, as we have been prototyping it for RENNtech for the last 4 weeks. What it allows, is for the owner to update, check faults, data log and change maps all within a few minutes.

You will first need to ship your ECU to either RENNtech or us, and after this the first and only time you will ever have to ship your ECU out. You then will have the RENNtech block which you will simply plug into your OBD2 port to data log and change maps.

James

Glock Guru

So it "Makes the same power" out the box? Is the MSRP still $3495.00?

groupB

http://renntechmercedes.blogspot.com...c63-11654.html

C63 1/4 mile photo and timeslip. ECU2, resonator delete, Nitto Invo tires.

Glock Guru

Koo, thanks for the link. I assume Renntech will come out with a FULL press release with some real details soon.

-Troy

groupB

Not sure that's anything to write a press release about? Our C63 ECU has been in the public eye for some time, and we've had a few customers inch past 120 mph in the 1/4. Wouldn't be news!

groupB

FYI: in the interest of full-disclosure, I do web-work and PR for RENN. I'll be filming another 63 this week at Moroso on some higher octane gas, but still not drag radials (that's cheating, anyway).

Glock Guru

OK, well lets see the exhaust parts (headers, mid pipe / sound pipe), ect. It seems like renntech has a lot more part for the C63 (ecm, exhaust, intake, brakes, wheels, ect.) than are listed on there web site. Whats the deal?




-Troy

peet

The only thing that bugs me, and it really really bugs me is that Renn nickles and dimes this to death.

tune - $2500
tune to the full capability - $3500 (same tune, just one number is adjusted to allow full HP)
tune to the full capability but on obd II writer - $4500 ($1000 for something mopar/ford get for free with their tunes).

I actually would feel better if originally (now that we all know it's moot) RT said, $4500 - our tune on a tuneboy type thingy (aka block) you get full power/hp, enjoy. I "get" that. But to charge $1000 more for changing numbers? And before anyone says it's development time is full of it.

Think of it this way... (not accurate, but illustrative)

RPM - 200 | 500 | 1000 | 1500 | 2000 and so on...
Stock setting - 1.0 | 1.0 | 1.1 | 2.2 | and so on
Stage I tune - 1.1 | 1.1 | 1.2 | 2.4 | and so on
Stage II tune - 1.3 | 1.2 | 1.3 | 2.5 | and so on...

You see - it's a matter of different values. The max values HAD to be worked out anyhow to determine what is possible without blowing up the motor. Why not use that stage II value? Why enter a "detuned" set of numbers?

Ok, I'll get off my soap box now. I will give them props for getting on a tuneboy type box first. Someone please post pix - I'm curious as to whether or not it is a tuneboy

Also - Renn: (or someone pass this to them), all the above aside, at LEAST get rid of the "send us the ECU" part. Take a page from the book of every other OBD II tuner and have the tuner take on the VIN of the first ECU it plugs up to and marry to it. Works for everyone now, and frankly that sort of ease would almost - ALMOST - warrant the extra money.

Cheers.

BerBer63

It'd be nice if they could make a VALET mode with this tune, then I'd really consider the 4500 price tag.

- Top speed of 35mph, top RPM 4500, no M/S mode, etc.

W204+M156

+1

Zod

if this works...its very sexy!
does this work on 55?

taylorcoleman

It's called, "Segmenting the Market". Mo money.

Here's another example:

A medium-end watch company wanted to capture more profits. They had tapped out their primary sales channels -- medium-end retailers like Macey's, etc. So at the factory, they took thousands of watches and scratched them so that they could sell them through low-end sales channels such as TJ Max and Marshalls. Thus, the lower sales price could be justified.