Mr Benzino

Hey guys, just wondering if anyone has had any issues with their vehicle due to an ecu tune?

rhoderunner

speeding tickets.... wife who doesn't like the feeling in her stomach when i floor it.... eye rolls

Acidic Reflux

lol. thats epic

rhoderunner

I've had the tune for a while. Love the tune, however, just had to replace the torque converter. Not saying the tune caused the failure....

Luckily the CPO warranty picked up the cost. I'm guessing had this been the transmission I might not have been so lucky.

ctravis595

After more trial and error I tried the 550ohm setup, and even tried replacing the maf. It always wants to throw a p0100 obd code for maf circuit error with the 550 ohm resistor setup

I tried 470ohm, same result ...

I noticed I can get the car to boost 4-5psi before it hit fuel cut with NO resistors ..

so if my target of 7-8 psi isn’t too far away from 5 psi where the fuel cut is happening, I believe 550 ohm might be too high of a resistance ...

it’s quite a lot of resistance if you consider it’s also dumbing down the signal during idle as well...

I have instead started experimenting with much smaller resistor values, I have tried a 20ohm resistor, the car was running very strong but I believe around 5psi on WOT I started to get fuel cut, it could be my spark plugs though. I ordered some m113k spark plugs to eliminate that possibility ...

I also believe some of lean issues mentioned in my last post were due to a bad maf and old o2 sensors

edit: wrong thread, kind of annoying how mbworld will display multiple threads on one page while browsing on mobile...

Roop94

So far no issues with the tune. Although my O2 sensor was gone, I believe that might've been due to the rich and unburnt fuel since my file has pops/burbles. But it was only one sensor. Or maybe it just failed, don't know. Otherwise, it's running pretty strong.
Only thing is, let the car warm up before going bonkers with the extra power lol

eurochargedw210

I

ctravis595

originally you said burble tunes on m113 engines only cause problems

ive never used a burble tune and frankly find them annoying, but what makes you say that?

eurochargedw210

I didn’t realized I scrolled down onto another thread. I was reading about 113, stuff when I posted my original comment, sorry. But yes burble tunes are annoying, and I’ve just seen issues with them sometimes.

ctravis595

I know exactly what you mean , that’s why I’m on this thread to begin with

Roop94

Well, to each to their own one issue I can say one might have if they get burble/pops tune while having cats on...it might kill the O2 sensor(s) and possibly start deteriorating the cats. O2 sensors will be the first ones to go as cats will take a lot longer to go bad due to unburnt fuel coming through. I still have my cats on with burble tune, but I'm searching for a shop to fabricate cat-less down-pipes.
Also, with burbles, you're simply dumping extra fuel in the system. This can also cause premature wear on the spark plugs additional to decrease in mileage and firepower.

ctravis595

I was hoping for specific examples of component failure due to burble tune

on the subject of cats, the tuner I deal with mentioned to remove cats for the burble tune

Roop94

some tuning companies won't tell you. But it technically is recommended that you remove the cats if you want burble tunes. Because cats are not built to have unburnt fuel running through them. Which is why we have 2 O2 sensors and it readjusts the ECU's actions accordingly to prevent that from happening. But it won't have a tremendous amount of effect on the cats in a short period of time. It will take time. I've heard many other people running burble tunes for a year or longer. Me as well...but I don't drive mine as much and I am currently looking to get downpipes.
Burble tune will also, at some point, cause the O2 sensors to malfunction or go bad completely. Mine did, only 1, but I can't say that it was due to the burble tune or for another reason. But considering that I have the burble tune, I just have to make an educated guess that it was due to the burble tune. Cats and O2 sensors are to be dry.

Now, I'm no expert with these things, but I did contact this one Merc/Porsche mechanic who told me that the burble tune will kill your O2 sensors. So if you have cats and O2 sensors with burble tune...and you get CEL regarding misfires and such...check your O2 sensor lol that's what happened to me. It threw misfire codes of ALL 4 cylinders in Bank 1 and Bank 1 O2 sensor. After replacing the O2 sensor, the car was back to normal.

When I was at an indy shop having it diagnosed, he had no idea, I guess my bad luck that I had this illiterate mechanic lol. Once I told him that I have an ECU tune, he immediately started blaming my tune and said the tune has fried your ECU software, and now you need new software, which will be $1200, including labor. He said he even had a MB dealership guy come and check my car out...he said he couldn't figure out what's wrong. So I called EuroCharged, a shop working with EuroCharged here locally, and that Merc/Porsche mechanic...said to change my O2 sensor first and then see. Changed the sensor...car was running like brand new.

Moral of the story: it is recommended that you go cat-less if you want a burble tune. One, you get the pops and bangs. Two, going cat-less, you gain another 25-40 ish hp and 35-60tq. Some tuning companies offer Stag 2 tune (after going cat-less) very cheap.