I tried. There wasn't a code...
I'm just afraid I go the dealer only to pay the 200$ diagnostic only to be told the same thing..
Im sure there arnt any codes , maybe a module somewhere is ****ed up and those pos oldfarts that sold the car to my brother KNEW damn well it had these issues and thats why they accepted his lowball offer. I know for a fact they did because when i hooked up my scanner the 1st time i seen it was reset literally the day he bought it.
if my scanner worked on my last n14 r58 and my current 13'r58 and r55 AND with the same scanner I was able to reset all the maintenance past maintenance request things so if it could access all those features on his car im 99% sure it would pull a code..
I guess I'm about to tell him **** it , there's nothing I can do. Lol I feel bad though , I guarantee he hates minis now already. And this is exactly why minis get a bad reputation. Pos owners who neglect their cars and then dump them off on someone who actually sought out that specific car for specific reasons rather than purchasing it new just to have a point A to B transportation.
its very frustrating !
i fixed the squeaking noise though , i out on a oem valvecover and it made that sound go away , so I WAS correct in guessing that that WAS the pcv making that odd noise. I was almost worried it was the timing chain but the sound was resonating from beneath the intake manifold. So the pos aluminum valvecover was GARBAGE out the box and YES I opened it up and verified the pcv plunger was correctly seating and the pvc track was sealed and tighten down well but it still made that horrendous squeaking noise. I will post the video again if it JUST encase anyone is searching " odd n14 engine squeak " hopefully it will help them find their issues.
whtats REALLY odd is , my r55 actually would do this EXACT same thing when I 1st got it , not exactly actually but very similar. I'd get thr limp mode and no cel when I would accelerate beyond 50% throttle and it would mostly happen at 45mph or above so when the car was in a higher gear ( its an automatic N18 S ) but lol it literally just stopped doing it and I didn't do anything to fix it. Literally, suddenly it just NEVER did it again. Literally it hasn't done it for atleast 6x months now. Amd the ONLY maintenance the car has gotten was transmission fluid change , tinfoil wrap around flexpipe to bandaid the ripped inhalf flexpipe, oil change and I installed the JCW ngkR plugs out of my r58.
o yea I forgot to mention, I DID try multiple obd2 dongles too. I tried the elm327 5$ cheapo ( that works for everything still) , vgate AND 120$ obdlink ( which did nothing more than the vagate as far as features and connectivity.

 

I understand.

I'm not convinced its NOT the HPFP.... All the symptoms fall under my experience with low fuel supply - runs fine, until full load under boost. Can you get your hands on a known decent used one just for testing?

 

crap ! I was gonna do that with the 02 sensor but i forgot. I will have him try that and lyk..

 

I am keeping an eye out for one but unfortunately as of now no I dont.. I been hoping for an n14 to hit one of our salvage yards..

 

Just to throw it out there. When my N14 HPFP was going out, it never threw any codes. Just the half engine limp mode when I would get on boost. Then it would stay in limp mode until I would turn the vehicle off. I would accidently boost a little much on my drive home and come up to the stop light and restart the car so I wasn't in limp mode. I bought a cheap ebay one and did the same thing except it was immediately after install. I ended up buying a used one and ran fine.
Fast forward to last year and my mini wouldn't start. Again no codes. I purchased a brand new pump and still no start. Ended up being the fuel filter under rear seat on passenger side. Changed it out and it has been great ever since. Never saw a code about anything. I have a thread on here about my diagnosis as well somewhere.

Anyways, in the market thread, I do have an extra N14 HPFP that I pulled from the wrecking yard. I threw it on right before changing the fuel filter and then took it off when my new one came. Let me know.

 

thx brother , I will let him know..
unfortunately doing a fuel filter as precautionary exploratory change is out the question as it's an r58 and an absolute nightmare to access that or the lowside pump..

 

I understand that it may not be a fun project. It is super cheap for a filter kit. I ordered mine from ECS. And if I remember correctly, I read that it should be changed about every 30k. Mine had about 95k on it. Not sure if you know if the used vehicle he purchased ever had it done

 

If it helps with the problem….

 

the tank needs to be dropped in the r58 unfortunately. Its that or spend 2x as long disassembling the interior.
if it was an r56 , yea I'd do it , it takes me abit over an hour for new pump AND filter but the r58 is a nightmare. That's much too much to do for exploratory.
atleast though the car only ever had non ethanol 91oct , atleast until last month because we have e10 in our gas here..so imo that gave me a little piece of mind because being so low mile the car sat for times and we all know how well ethanol ages..

 

I finally told him FK IT ! pay the diagnosis, ille do the work.
so I found a shop that specializes in diagnosis and repair of euro,bmw amd minis so it goes in Wednesday i believe so after, I will report back with the results.
I too lean towards a failing hpfp OR coked valves impeding air flow..

 

Sooooooo the diagnostic comes back as.........
bad wastegate.! Idk if I trust that though because I verified it was closing under correct vacuum UNLESS it shifts a litle and not fully covers the hole.
What makes me skeptical is :
They also said there was a vacuum leak from the noisemaker delete pipe and the bov. I know for 100% sure the noisemaker delete wasnt leaking , and i know the bov was functioning BECAUSE IT WAS MY old valve that never had an issue on my car , though it could have on my brother's now..
but he's getting it back soon and I'm going to try and verify that it truly is a bad wastegate. I mean there's like NOOOO play on the wastegate either ,odd.. but maybe it's cracked internally like the jcw turbo tend to do.
idk.. I guess ille 2x check it and go from there..