Beaubot

http://www.bimmersport.co.nz/forums/index....t=0#entry492095 Sounds perfect for your mate

Ive got to replace my coupe with a bigger car. Unfortunately its not under 200000km but it is manual http://www.bimmersport.co.nz/forums/index....showtopic=45206

Hey guys Got another family member on the way so I need to shift the coupe to make room for something a little more family friendly. Im wanting $4000ono as is with 3 months REG, wof expires on the 27/7 OR I will trade for a e36 Touring regarless of engine or trans 1996 323i Motorsport Coupe, converted to manual with a conversion I bought from Arthur http://www.bimmersport.co.nz/forums/index....nual+conversion Which came with a heavy duty clutch kit and light weight flywheel. Has an m50 manifold conversion, 18 inch BMW M5 wheels and a 2.5 inch straight through exhaust. Now it mustve been a reps car because its done HIGH kms, I have no service history so I dont know if the engine has ever been replaced. Considering its age/kms its in pretty good nick but dont get me wrong its nowhere near perfect. Its Hellrot red, and has a fair bit of clearcoat cracking, theres a eyebrow scar above the lh headlight and a few surface dings and scratches. The half leather seats are fairly aged and both the front door trims are missing the material inserts (previous owner even tried to paint one red) The only thing the car required when I bought it was the RHF lower balljoint, which I did a few months ago. Car is in CHCH phone or txt 0273677368 Cheers Beau

That Ron was a great reply, see we can all get along. Youre right about the subjective opinion, its hard for me to explain but the lack of restriction at the top end is quite a significant change in the way the engine runs, I understand Ive lost power and torque but its just more enjoyable. I guess if you factor in that this is just a cheap daily that I rev out repeatedly and not something Im trying to do time attack with it might make more sense. If not, no matter. From what I could find the 323 has the same headers as the 328 but has restrictive single down pipe? It appears mine has had a bit of a replacement section at the y pipe but its still not all that large in diameter. Other than that Ive binned the cat, run a nearly dead straight 2.5 inch pipe to the rear and have a high flow muffler at the bumper.

So why do you keep coming back to have a go? When I posted my dyno results and my initial posts did I ever ask for you to weigh in with your opinion? I was simply sharing some facts that I have encountered. When I searched the forums for info on 323i intake swaps your "5 year old" thread didnt turn up so how was I to know that you had already done some research? For some reason you seem so offended that I shared my findings. I know what my car was (and is) like to drive, the torque loss isnt noticeable but the extra revs are, hence why I prefer the car as it is, not to mention the power doesnt feel as if it drop off so significantly, power delivery feels more linear (which you can see in the graph) What was my obviously stupid comment? That I FEEL my car drives better? or that I like having the engine spin an additional 600rpm? Hop down off your superiority complex high horse and realise its just a BMW forum, theres no need to act like a hero

Agreed Allan hence why I said it was weird, the engine physically revs 600rpm higher now before the rev limiter is cutting in. I can only assume its due to the smaller manifolds choke higher in the rev range. Lighten up Ron. I understand many people are so concerned with numbers, power figures and so on but in my opinion my car is now better to drive, how does that make me delusional? Just because someone doesnt agree with you doesnt mean you need to be an ass about it

Well when the M50 was released I wouldve been 3, so I cant say it was too high on my list of concerns. I understand what youre saying but in my eyes I have gained 600rpm, the engine will rev 600rpm higher before it limits, power delivery is more linear and up top she spins freely (where as it used to have a significant choke point) It would be interesting to see what sort of results tuning could yield. For a cheap road car Im happy with how it drives and performs, all I need now is an LSD. Despite the torque loss I still feel the car drives better. Like I said if I wanted cheap power I wouldnt be pissing round with an old Bmw donk.

Yeah I had read that midrange torque would suffer, overall power would increase and that the engine would run freely up top. I can vouch for the extra revs and the fact the engine doesnt choke up top and I suppose there was a 1kw power increase (lol) Either way Im still happy with the result, I enjoy ringing the tits off the old girl and she seems to love it. Many of the US based sites still recommend the conversion for the b25 (I can only assume they were more common) I just thought Id share, especially since Jonathon provided me with some dyno runs

Most definitely, considering the ecu is currently mapped for the intake velocities and air quantities that the smaller intake tracts provide a remap would provide the biggest improvement but as far as I am aware the obd2 ecu cant be remapped like the m50 ecu can.

Keyboard WARRIOR!!!!! calm the farm 3pedals, I hope you dont speak like that to peoples faces. Ill admit I didnt do too much research specifically on bimmersport (so I didnt see your thread from 5 years ago) but as with the glory of the internet there were plenty of sites and forums internationally that supported the swap, the manifold cost $60 from pick a part and the dyno runs cost nothing. I am aware of the torque loss but Im, fairly happy gaining another 600rpm. I still have the m52 manifold but I think Ill keep the m50 manifold on the car. If I were really wanting heaps of power Id simply drop in my L98 and be done with it. Michael, cheers for the slightly more positive reply

1996 323i 320000kms blue with m52 intake, red with m50 intake 2 inch exhaust, no cat, otherwise standard

Well, had the follow up dyno run today, results weren't quite as good as Id hoped. While the car feels much freer at the top of the rev range, turns out power and torque have dropped over nearly the entire rev range...... I do however have another 600rpm to use which is kind of strange. Please bare in mind I have done absolutely nothing else to support the manifold swap but I guess this dispels the rumours of "15 to 20hp" gains just by swapping the intake manifold. Blue is m52 manifold, red is m50

Ive got a e36 323i with the m52b25, which also has the restrictive obd2 intake. It had 315000kms on it when I picked it up several months ago, mustve been a reps car as itd clocked 250000km in just under 3 years and it still runs amazingly well. The auto was starting to slip when I go the car, first modification was a manual conversion with a lightweight flywheel (from one of Bimmersports members) which made it so much more of a drivers car. Also the factory auto diff ratio coupled with the manual gearbox ratio is great for acceleration but theyre less than desirable for highway driving. Ive just put the m50b25 intake manifold on last weekend and the breathing improvement at the top of the rev range is significant enough that its noticeable. With the old intake you could feel the engine choke around the 5500rpm mark, where as now it still spins freely to the rev limit. I had a pre intake dyno run done and Im just waiting for a chance to do a follow up, will post results when I have but Id recommend it.

Ive got a e36 323i with the m52b25, which also has the restrictive obd2 intake. It had 315000kms on it when I picked it up several months ago, mustve been a reps car as itd clocked 250000km in just under 3 years and it still runs amazingly well. The auto was starting to slip when I go the car, first modification was a manual conversion with a lightweight flywheel (from one of Bimmersports members) which made it so much more of a drivers car. Also the factory auto diff ratio coupled with the manual gearbox ratio is great for acceleration but theyre less than desirable for highway driving. Ive just put the m50b25 intake manifold on last weekend and the breathing improvement at the top of the rev range is significant enough that its noticeable. With the old intake you could feel the engine choke around the 5500rpm mark, where as now it still spins freely to the rev limit. I had a pre intake dyno run done and Im just waiting for a chance to do a follow up, will post results when I have but Id recommend it.

Hey Arthur, are you negotiable on price at all? Does it come with everything required for the conversion? And will you drop it to a Mainfreight depo?

Hey guys and girls. New here. Ive got a 323i and after all of my internet research I apparently need to find a M50 OBD1 intake manifold. Also Looking for an open diff to lock and if the price is right an LSD give me a txt or call on 0273677368 or alternatively a PM Cheers