Another dead engine post.

https://www.evolutionm.net/forums/sh...d.php?t=112840

Has anyone running the exede or Xflash killed their motor yet.

 

Hm, this was awhile ago, but I do remember reading that someone had a concern regarding something about the high cylinder temperatures in Dynoflashed cars. For what it's worth, I don't think there's enough long term evidence to suggest that that is the direct cause for the failures in Dynoflashed cars. But it is worth a look, I would think, especially if we see more Dynoflashed cars crapping out.

 

Oppps here's another ??? Could be bad wrench turners however ??

https://www.evolutionm.net/forums/sh...d.php?t=112925

 

Neither of those failures look detonation related.

In first case cited, there's no evidence of detonation nor abnormally high in-cylinder temperatures. No pitting and if the spark plug is "orginal", it's in good shape.

In the second case cited, umm, the guy just got done installing a new set of cams. I'm sorry , but in my limited experience, highly unlikely that motor "leaned out" without being properly scaled for the Walbro 255lph pump upgrade. Stock rail pressure is 43.5psi, with the Walbro it will run at 52psi. That's the equivalent to upgrading the injectors from 550s to 600s. Almost negligible but enough to provide a small margin of safety.

Of the reflash market, how much does Dynoflash hold as a share? If it's enough, obviously you'll see more of failures with Dynoflash in terms of raw numbers. Until there are more reflashes in use, looking at these particular failures and claiming a flaw with the tuning methodology is meaningless.

I'm all for calling out tuners who screw people's stuff up, but let's be objective about it. Oh, wait... this is EvoM, I forgot.

 

I'm not pointing fingers at specific tuners just seems more AEM, Dynoflash cars have had engine failures. Or just our Xede tuned cars are not talking when theirs goes up in smoke. Safe power is just important as max power to me.

 

u think??

 

Just trying not to make the same mistakes if any were made when I'm tuning .

 

The reason you're probably going to see (as a percentage) more AEM tuned cars have problems is because it takes quite a bit more knowledge and skill to dial in an AEM EMS as opposed to the XEDE. Unfortunately there are a few "toonerz" out there who really don't have the necessary experience/knowledge to setup a standalone engine management system from scratch. But, as with everything else, "caveat emptor" ... just gotta make sure to do your research and get lots of references before letting someone touch your ride...

l8r)

 

Excellent point!

 

Hey, I'm on board with the "safe power" concept too.

My points are:

1.) More Dynoflashed ECUs = more failures will be seen with flashes by Dynoflash. I haven't seen any detonation related failures. At least not blatent ones. Correct me if I'm wrong.

2.) AEM EMS... hand a gun to a 4 year old. You'll get the picture.

3.) I get the impression some Dynoflash customers may be a little more cavalier about tuning safety.

 

Fact of the matter is that only hard thing to tune on a standalone is drivability and that's were skill or I like to think experience comes into play. At WOT it's the same as Xede except you are using actual values instead of offsets. Offsets are harder to tune IMHO. The reason AEM cars are going is because the knock sensor is set up by the tuner not the Factory. The factory has to provide a 100K mile motor warranty and the tuner can just blame something else were the factory has no ware to go.

Bottom line guys we have only had the car for two years now in March 05. As more miles are driven and more motors blow we will all have a good understand what the mechanical limits of these cars are. And then they will change something and it's a whole new learning curve.

I have about 17K on my car and I check my plugs all the time to see any signs of detonation. So far so good clean running and constant. Car never feels like it pulls timing.



Eric

 

Let's put it this way, Last time I have seen the count is about 600 or so dynoflash cars as per Dynoflashes proclamations. So lets assume that's fact. Do you have any idea how meny Evo Xedes were sold? (more then 600 )

 

Cool. How many failures have we seen directly attributable to aggressive/unsafe tuning on either platform? Who really knows? If you could examine each one, I doubt any of them would be directly attributable to Shiv's or Al's tuning.

I'd love to see a study of failures and their root causes. That sort of openness would really benfit the community. Unfortunately for the most part this is a closed, closed minded, highly proprietary, zealous community that values pissing contests & bragging rights over cooperation.

I am not a zealot or "assmunch" for any tuner. I value quality and customer service over philosophical approach. I value tuning philosophy too but it's not what earns my business. So far few if any of the tuners that sponsor this forum live up to my standards. They pretty much all suck at earning my business. Either they try to sell me what they think I want to hear or they won't give me the time of day. Oops.. sorry for the soapbox rant.

 

Yep, and that's where I think a lot of new tuners tend to be too hasty and too aggressive. A lot of people get sucked into the whole "I wanna make the most possible power" game, and end up paying the price for an overly aggressive tune. IMO tuning for the street is all about driveability, and having enough margin of safety to be able to handle adverse conditions (bad gas, weather changes, altitude changes, etc.).

l8r)

 

as a pure matter of note DF is about at or just over 1000flashes sold.

AEM EMS blow up more because idiots with no experience or insufficient experiance try to tune thier own cars instead of leaving it to a professional.