Search:

The adapter solution to reduce the thermal stress on the sensor applies for any engine. It may be useful for high power N54 engines. I'm just in the 400 whp domain... I've had one primary sensor...

Findus Lasagna Horse Power - happy cattle :P

Here is a O2 sensor protecor for highly tunded engines. It is used in applications that the normally will reduce the sensor life a lot like in two-stroke engines or when running race fuel etc....

The car looks great Enrita :)

Are the TD's on the new engine?

Glad it seems to run OK now. Perhaps they messed up the compression test. A double check is needed.
Damn pigs that damaged the front.

GT-R is the King, congrats !

You are absolutely right in that there is a high risk in buying a used car that has been highly tuned and driven hard. But as long as it works OK it is up to the buyer to decide if he want it or not....

I thought max boost is 9 PSI. 11 PSI which should be close enough with low boost response and low aggression settings.

Interesting info, looking forward to further reports :)

An imortant desision will be to continue using TD's or not. They don't provide a lot of top end while making huge cylinder pressure in lower midrange. This increase the engine stress a lot compared...

It should be a lot cheaper to fix a valve than replacing the engine if this is the problem. The risk for a blown piston is quite high though compared to a valve leak.

Yes, if they feed pressurized air into the plug hole they may be able to detect if air is leaking by exhaust, intake (valve) or crankcase (piston). But the head must be pulled anyway so they could as...

I agree the type of damages on N54 that carves BIG holes in the wallet are tune related, like blown pistons and worse. This will happen with any engine that is subject for constant increase in power....

The majority of problems with the N54 engine are not tune-related.
Injectors, Hpfp, coils etc. fails on stock vehicles as well. The problemsare manageable when you use the car close to home or have...

Yes it should be related to some mishap from the shop work. However, I get more and more in love with my slow but trusty X3 for every time I see problems with 335's. My own premium car is a shame in...

I wasn't aware the plug was oil fouled. I thought the main issue was lack of spark on #5, especially since they replaced the DME because of this. In case the misfires are caused by a fouled plug it...

WTF, didn't the shop isolate the fault to be caused by no signal from DME to #5 coil?
You may instead have a bad wire connection in the harness from DME to coil 5.

Try to get the faulty ECU if possible. I can look into it and change coil drivers if they are available. It looks as they are labelled so it should be possible. If so, it is best to replace all 6...

Damn, another problem with the N54 engine. It's very annoying with all the issues, injectors, HPFP and other weak components. The desire to make long trips in Europe is severely reduced when you...

Really :rolleyes:

I would swap or replace coil 5 to begin with and see what happens.

Great news!

Will this have a noticeable effect on the M54B30, 231 hp Engine? The engine is noticeable unwilling above like 4500 RPM. It can be forced to 6 k but it takes ages and there is no real power above 5...

Yes it is the sport package, and it still handles well compared to many conventional cars. The only issue now is I believe a couple of the so called 231 horses never left Munich. The engine is too...