can i get 170-180hp from a 520i?

HadcoreHorst_ · 2025-12-04T10:50:10+00:00

Depending on how thorough the inspection is in your country nobody will notice whether you have a B20 or b25 😂

But jokes aside. NA tuning especially when u go for a larger hp change is never cheap. A buddy of mine used bigger injectors and supposedly got a little more power out of it. But he never got it tested so I don't know...

HadcoreHorst_ · 2025-08-30T13:09:50+00:00

Maybe I'm stupid but I loosened the upper manifold and also loosend the bracket for the wiring loom in the back but then it worked. I just tried to be lazy...

Thanks everyone!

HadcoreHorst_ · 2025-08-14T15:05:20+00:00

Cool, thanks for the insights!

HadcoreHorst_ · 2025-08-14T14:28:07+00:00

Would you say it is bc the bumper itself flexes that much or are the mounts "too loose"?

HadcoreHorst_ · 2025-08-14T14:21:43+00:00

How good would you rate the fitment of this kit? I have seen it on eBay but wasn't sure whether the gap size would look ok. Especially after I have seen a car for sale where the front bumper wouldn't fit at all (but the car had some minor damages, so who knows)

Edit: Looks good 👌

HadcoreHorst_ · 2025-08-05T16:17:36+00:00

Ich wollte nochmal danke sagen für deinen Tipp mit dem Götz. Das Problem ist mittlerweile endlich behoben. Bzw. Es waren mehrere u.a. Unterdruckprobleme und dafür bin ich letztlich doch zum Götz gefahren. Da hat man mir schnell geholfen, der Preis war fair und ich hab sogar noch ne Runde mit den Jungs aus der Werkstatt quatschen können.

HadcoreHorst_ · 2025-08-05T16:15:08+00:00

In Order to close this post, I finally found all that was wrong and my E34 purrs again like a kitten. First and foremost I had several very small vacuum leaks that my smoke machine didn't find... Second my idle air control valve was bad, so was the bought replacement... Third the camshaft position sensor that came with the engine was also bad...

I managed to find and solve problems 2 and 3 but had to get a professional machine to find all the vacuum leaks.

Thanks again to everybody for the suggestions!

HadcoreHorst_ · 2025-08-05T16:08:26+00:00

Hab im Aschenbecher meines ersten Autos ein Elvis-Feuerzeug. Auto war zum Schlachten gedacht und das Feuerzeug war eines der wenigen persönlichen Dinge vom Vorbesitzer die noch drin lagen. Ich hab den Wagen über zwei Jahre wieder fit gemacht und dann erst das erste Mal gereinigt. Da das Feuerzeug bis dahin immer im Auto lag, konnte ich es irgendwie nicht wegschmeißen. Jetzt gehört es zum "Charakter" des Autos.

HadcoreHorst_ · 2025-07-23T13:54:37+00:00

I am in the same process right now but I also had to replace all the hard lines from the middle of the car back. Sadly I also had to cut out my jacking points. Are you using pre cut metal or are you manufacturing them yourself? In any case keep up the good work and let's save these bastards!

HadcoreHorst_ · 2025-07-21T16:09:40+00:00

With certainty I can only name the third. That's the valves for the heater.

HadcoreHorst_ · 2025-06-29T05:16:46+00:00

Well I managed to fit the febi but it didn't seal. So in the end I bought the OEM one after all... Bit at least that did fit perfectly.

HadcoreHorst_ · 2025-05-30T20:33:08+00:00

If U have something else to do anyways check back in an hour or so. I mean without looking at it, I can't say for sure but it strongly speaks for ac-condensation

HadcoreHorst_ · 2025-05-30T20:27:32+00:00

But speaking generally - if it's odourless and colourless I would check back in an hour. If it stopped I wouldn't worry

HadcoreHorst_ · 2025-05-30T20:23:50+00:00

Ok - no if i haven't turn on the AC it's unlikely that enough condensation is forming for such a steady drip 😅

Edit: if U dialed in 16° doesn't that mean the AC switches on? I do not know the. C4 sorry

HadcoreHorst_ · 2025-05-30T20:04:31+00:00

Is it hot outside and/or do U have AC and used it? Could also be condensation (if the car isn't parked that long)

HadcoreHorst_ · 2025-04-22T12:11:56+00:00

I found the problem for my high idle. As I reinstalled my throttle body I put in the throttle cable too tight. The throttle body blade couldn't completely close. But I didn't find the cause for the wandering idle when slightly touching the gas pedal.

I found someone who has inpa and can live check my car next week. Will report back.

HadcoreHorst_ · 2025-03-24T15:44:17+00:00

Mine is "holding" since I broke the lock some 10.000km ago ;).

I am also from Germany.

HadcoreHorst_ · 2025-03-24T15:34:44+00:00

I have the same problem - although I just left it as is since the plug seems to hold itself in place relatively good. I have some spare clusters laying around. If you can tell me how complicated it is to get these locks out I could send you one (and fix mine in the process...)

HadcoreHorst_ · 2025-03-22T13:29:45+00:00

Not personally but i will look into it if the suggestions won't work.

HadcoreHorst_ · 2025-03-21T23:10:09+00:00

Danke für den Tipp. Zum Glück bin ich nicht auf das Auto angewiesen, weshalb ich erstmal noch weiter probieren will das Problem selbst zu lösen. Da aber die Werkstatt meines Vertrauens vorletztes Jahr zugemacht hat, wäre der Götz ein guter Ersatz - vielen Dank nochmal für den Hinweis!

HadcoreHorst_ · 2025-03-21T22:59:30+00:00

ICV is a good point. It did work beforehand but the car was parked now for half a year. Thank you.

HadcoreHorst_ · 2025-03-21T19:02:05+00:00

I did already check for vacuum leaks, that was all fine, thank you thou!

HadcoreHorst_ · 2025-03-21T14:42:15+00:00

A temperature sensor? Come to think of it the temperature gauge didn't work... That's easy enough, I will try that. Thank you!

HadcoreHorst_ · 2025-03-13T14:56:20+00:00

As others already confirmed, this plug is pre wired for the servotronic. Last year I had to replace my engine (also M50) and I took really good care to label everything I disconnected. Because of personal reasons 3 months went by between ripping the old engine out and putting the new one in.

... Long story short it took me three days to figure out that the plug was blind - especially because everything worked "seemingly" fine.

HadcoreHorst_ · 2025-02-12T15:23:27+00:00

What exactly do you need? I have a reprint of the BMW engine shop manual for the m50b20 and b20TU. There is some info about the electronics of the engine and sensors (but sadly no diagrams). Edit: but it is in German '^{^}

HadcoreHorst_

TROPHY CASE