So now I am thoroughly annoyed.

Just got a call from Sean asking me what the TCU was out of. This was after we had a lengthy conversation on the phone on Thursday, it was at this time he told me to overnight it and he would get it right back out to me.

He wasn't even in the office/shop on Friday. Why ask me to overnight it if you aren't even going to be there to work on it. He also said that there is an online form that customers have to fill out that answers all of the questions he was asking me...… I paid for the TCU over the phone, this wasn't an online order. He just said to put "ATTN: Sean" on the label, which I did. He didn't mention anything about filling out any form.

I tell you what, this tune had better be worth it, because as it stands right now, I am less than impressed with the customer service at Eurocharged.

And then he called me back to say that it would have to undergo a "reset adaptations" process with the Star tool.... which I do have. If someone else is getting a TCU tune, it is no longer plug and play. You have to have access to the DAS Star tool.

I hope I get to drive the damn thing before the Coronavirus kills everybody.

Jared

 

Could that be because the eurocharged tune was designed for a 6 cyl. Crossfire and not a V-8?

 

No, Sean said that they used to have a XF that they could snap the TCU in and do the reset before they mailed it out. They don't have that car anymore.

The TCU doesn't care that it's a V8...… I doubt it even knows that it's running in a car with a V8.

Jared

 

TCU is out for delivery. Would be nice if it showed up before I had to leave for work.

Jared

 

Well I drove it to work yesterday. 70 miles round trip with no issues other than it's still down on power.

No CEL, and low rpm/part throttle response is great. Anything over 1/2 throttle doesn't produce much in the way of power. It does accelerate, just not very fast.

I'm going to take Andrews recommendation and do a fuel pressure test on the road, and I will do some data logging to see what's happening.

Besides that, it runs great, idles great, and will put you back in the seat in 1st gear.

I'm getting ready to be sent home from work for a couple of weeks, my wife already has been sent home with pay. Daughter is out of school because they're all closed. I'll have some time to get it sorted out.

BTW, I really like the ride with the new shocks and tires. The car doesn't pull me around anymore when I hit ruts or un-even pavement.

Jared

 

remove your fuel regulator/filter ,,,install a adj regulator (don't forget a return line) set fuel pressure to 60 to 65. you may need a srt or a V8 fuel pump. mine was dying off above 4000 rpm pump and solved it then reg went in to lower AFR.

 

Get a bigger fuel pump https://www.fcpeuro.com/products/mer...ump-0014706594
and the bigger fuel injectors.
Install adjustable fuel regulator as amx 1397 said above. https://www.repairmanuals.co/product...oaAr_YEALw_wcB
Probably you have to bypass the stock fuel filter and install an in-line fuel filter. It should be fine.

 

Why would I need bigger injectors? I'm running the AMG injectors that were in the engine when I bought it.

Jared

 

So you don't need them

 

That was my question.

 

Quick question..... Does the Crossfire have an "Engine limp mode" that would result in being able to drive, but with reduced power?

Here's what I did this morning.

A couple of standing starts resulting in noise and tire spin and torque with the power starting to level off between 3000 rpms and 3400 rpms and then a shift a 3500 rpms..... 2nd gear same thing.... shift at 3500, 3rd gear same thing.... shift at 3500.

I also had a current and stored code for the left knock sensor. I ran a test and it is putting out 0 voltage. I must not have gone through enough drive cycles to trigger the CEL. The knock sensor is buried under the intake manifold and I am wondering if I got it plugged in all the way when I swapped out the harness.

Could the ECU be limiting power to prevent the driver from putting the engine in a running condition that is likely to create detonation???..... Seems feasible to me. Regardless, figuring out what is going on with the knock sensor is numero uno on my list of things to do before I go any further.

Jared

 

Here are the flow results from the AMG injectors..... yeah, pretty sure I don't need new injectors.

70cc in 30 seconds at 52psi.

Jared

 

The Crossfire does have a limp mode, I have never experienced it though.

 

For sure it has a Transmission limp mode.

Does it have a reduced power engine limp mode?

Jared

 

https://www.google.com/search?q=chry...p+mode&ie=&oe=

 

Everything in that link made reference to a Transmission Limp Mode.

The transmission is shifting normally.

I want to know if there is an engine limp mode.

Jared

 

Looks like the problem is in your ECU - ECM.
Limp mode is a security function for your engine. When the engine has recognized a serious faulty parameter from the engine, the car will go into limp mode. The limp mode does often reduce the power and limit the RPM of the engine so you can drive your car to a workshop without damaging the engine
From Google search but I guess you know that.

 

Post a link to that.

I know many makes and models of vehicles do have a reduced engine power limp mode, but I was unable to find anything that specifically said Mercedes in our year range. That's why I checked Google first and then asked here.

Jared

 

Check right there https://www.google.com/search?sxsrf=...30.943REVZ01D8

Maybe you'll find something useful.

 

Nothing. They were all posts about transmission limp mode.

Post a link to the Google search thing you posted up above. I want to know if that was a general statement or if it was specifically directed towards a Mercedes.

Jared