Power loss

Is it in “eco” mode? Check your supercharger belt. What are the exact symptoms?

your TH is tuned if I remember correctly. Maybe wrong fuel type

no i am not in eco mode the belt is fine there is no problem about it the symptoms are when i accelerate it has power but not enough compressor i hear it a bit not as before, i had this problem on saturday when i had half the tank, then i filled up the tank thinking it was because of the petrol but still the same then sunday when i started the TH everything is fine it had the power it needed and today the same, I think it's the essence but I'm not sure

I put the link of the pipe and the engine, the engine runs like clockwork but no power

That is strange. Data logging is the only way you’ll know for sure. It’s almost like there an issue with the throttle by wire. If you have HP Tuners, you could try a throttle relearn or try disconnecting the battery for a few minutes and see if that doesn’t reset whatever is going on. Not all DTCs will show up using the on board diagnostics, try hooking up a proper scan tool and see if that tells you anything.

Looking at your videos, you are really down on power. I would take Lil Hemi’s recommendation and hook up a scanner and check for faults, unplug the battery, maybe even leave it unplugged overnight just to make sure all systems reset. If you have a local dealer I would take it to them and see also what they have to say if the problem persists. Also maybe get in contact with the tuner and see if they can help diagnose the problem.

strangely this morning I start the th and it has all its power, I have not touched the battery yet

Valet mode?

Gremlin said:

Valet mode?

Click to expand...

no no valet mode, this morning I start the th no problem, all day I drive and I accelerate no problem, I did a launch control without the active and again loss of power, I'm going to lose my head I think

Put a tester on the TH, you have an issue, probably throttle body. Or you might have something else, which only a tester can find.

look at air/ratio when doing a launch. Maybe a pump is failing.

I noticed yesterday that the TH was limited to 200kw there is something blocking I don't know what it is I'm going to disconnect the battery for a few minutes to start then check with a tester if it's still not good.

Have you been looking at the boost when it is having the power problems?

Lil Hemi said:

Have you been looking at the boost when it is having the power problems?

Click to expand...

data is like this on screen during power issues

Doesn’t look like you’re making boost. Maybe the bypass valve?

Lil Hemi said:

Doesn’t look like you’re making boost. Maybe the bypass valve?

Click to expand...

I didn't really understand what you said because of the translation sorry, but here is another video during a big acceleration

It looks like your boost gauge is in the top, right corner and I’m not seeing it go from vacuum to boost. The bypass valve is a smaller throttle body located on the blower that controls how much air gets forced into the engine and how much goes back into the intake.

Lil Hemi said:

It looks like your boost gauge is in the top, right corner and I’m not seeing it go from vacuum to boost. The bypass valve is a smaller throttle body located on the blower that controls how much air gets forced into the engine and how much goes back into the intake.

Click to expand...

Do you have a picture ?

I’m not 100% those are “burn” marks. I would get a data logger, I use the HP Tuners device. This way you can see what’s happening in real time. Otherwise we are just guessing what the issue is. You’re not building boost but there could be many reasons for that.