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This seems about right from my experience. The M52 manifold is just not the limiting factor on a 2.5 or 2.8 and only makes marginal gains on a 3.0+. 2.8 with US S52 or Schrick camshafts does work a little bit better.
do u have proof? i tested and logged several setups m52 and m50 mani.. the load and maf values dont drop on the m50 as they do on the m52 mani above 5500rpm. also did gps time measurements where m50 mani performed better and faster with a proper tune.
@@CSI_tuning_solutions I do, I swapped my S52 and currently tuning it. It took about 4 more degrees of timing in the lower range, which means it’s flowing a lot less. I am tuning the entire fuel table to have less than 5% fuel trim now and that will be an excellent comparison of the tune difference. I’ll update here when I am done.
Get the service done, interesting after a year of hard driving you havent loss power. And as far as i know different wheel/tyre dimensions will affect the power unless the dyno technician corrects it, so bigger diameter wheel should net a bit less measured power, similar to how lower gears net higher hp figures .
They keep telling it need to be tuned but you should the be comparing tuned stock vs tuned m50 and gains would not be pleasing for those who swear by this upgrade. Tu models would be better of whit m54b22, b25 or b30 intake manifolds and you dont lose disa, i think m50 manifold swap being so popular at the time was cause they where cheap back then and they work good whit an turbo setups so every na tuner who thinks bigger is allways better and yields more gains got into them whit buttdyno.
You were racing hard before the crash, really pushing that e30 yohr. What position were you in before the crash, P4? Good thing you could walk away from that tho, but I wonder how the weekend would've ended if that didn't happen.
My dad bought this car from steven at Caledonian motors around 1998. He rebuilt the motor then sold it around 2003. Miss this car everyday. Still have physical photos of this car. Before digital cameras and camera phones became a thing.
as said before. ecu needs to be tuned proper to the m50 manifold. however, torque loss below 4000rpm cant be 100% compensated. but it is still the way to go if you want an easy power upgrade. and there is no mythbusting. it has been proven many times over the last 25 years that it can gain around +15hps above 5500rpm.
Wait...u don't have the tune done? Of course there's no difference. Also a big part people don't realize are part of this is the MAF and throttle body. There no point in feeding your car extra air if the computer doesn't even know it. All doing the intake without the tune does is give u some better intake sounds
Thanks Noor! It's a pity the Gopro's didn't last the entire day as I ended up pushing a lot harder later on. But thanks, great experience, massive honour to have gotten to drive it.
@raceweb I have no argument to that logic...well maybe posting it online part. Personally woulda waited till everything was done and had the comparison dyno runs
I did the m50 intake manifold on my S52 M3. I had to do a little tuning to the ECU to really take advantage of it. There wasn't much change with the swap alone. Once I adjusted the MAF curve and spark maps, the differences were incredible! It particularly comes alive up around 4000 rpm.
@@AndiS21-u6r The stock MAF couldn't handle the airflow at high RPM, it would flatline at the top end. This created a lean condition as the engine was pulling in more air than the MAF was reporting. To fix it I cheated by modifying the MAF curve to supply extra fuel at high airflow readings that way it wouldn't go lean. Though it wasn't exactly correct but it worked based on wideband O2 sensor readings I took. I tried the resistor method to fix it and failed miserably, the resistor method required a full retune of the entire MAF curve and it was darn near impossible to get the low RPM sorted out. Mind you I was road tuning the engine and high rpm wide open throttle is far easier to tune than just off idle.
@@johnpearson492 Thank you for the lengthy explaination. I guess this must be necessary for S52 engines. I guess not for M52, as it doesn't have the same cams as a S52 does. Now im curious to measure my MAF readings at WOT until redline. I have a M52B28 with the M50 manifold swap.
@@AndiS21-u6r I suspect you are correct as the hardware is all the same between the M52B28 and the S52B32, however you might get really close. The amount of your engine needs should be closely related to the difference in displacement and your engine is only 13% smaller. Test and find out, it will be very obvious if you chart the MAF output voltage or calculated airflow, if the readings hits a flat upper limit then you will want to account for it.
As someone who has an e36 328i with the M50 swop, I can tell you that the dyno results could not be any more accurate. I experienced the same and was disappointed. However, this does not mean that the m50 manifold swop is not worth it. We cannot compare a stock intake manifold against the m50 swop on the stock ecu. The stock ecu can and does take time to adapt but the m52 manifold has an average flow of 193cfm per cylinder and the m50 an average of 285cfm per cylinder. The difference is huge so I don't believe the stock ecu can adapt in its most efficient form. It would have been great to see a tuned(ecu software) stock manifold vs tuned m50 swop. Maybe that will indicate whether the swop is actually worth it and whether there are gains to be made. I have also experienced that m3 branches helps alot! Gives 7wkw and 20nm, a b**** to install but a much needed torque gain throughout the entire rpm range, with no ecu tune. The above is just my opinion and from my experience, others may experience it differently. For me, the m50 manifold swop is definitely worth it, if you get a chip/management along with it. This is amazing content, looking forward to the next video so we can settle this debate for good!
Shailin, thanks so much for your valuable feedback. Now I dont feel so bad, and neither should my mechanic Ashiq either lol. I am currently looking at a stock ecu tune option. But I am first going to try out the timing correction first. Will document and post as we go along. Junaid
