M50 Manifold/upgrade help!

[E30DriftMissile]

okay ive searched but ive become lazy so i thought id start a new thread. Can i just swap my m52 intake manifold for the m50 manifold and get the adapter silicone hose and call it a day or do i have to go through with the whole obd2 to obd1 conversion. im planning on installing 24# injectors and s52 cams. would i need a bigger throttle body or dif maf? any advice or critics is welcome thanks for reading:bow:

[evandael]

people swap m50 manifolds on obd2 s52's all the time. read up on e36 forums for more info!

[luckysnafu]

For the m50 manifold swap you can keep it OBDII with the silicone hose kit. I did that on my m52.

I'm running s52 cams and didn't bother upgrading to a bigger TB or maf.

[E30DriftMissile]

For the m50 manifold swap you can keep it OBDII with the silicone hose kit. I did that on my m52.

I'm running s52 cams and didn't bother upgrading to a bigger TB or maf.

Yea? so how was the feedback from the engine? throttle response? im psyched for it but i dunno if i should be ehh about it or expect it to outperform. i can understand the tb or maf but i think the injectors is a must for the extra air intake? cause when i compare the m50 is HUGE and the m52 is like sucking air through straws

[evandael]

bigger HFM is pointless and 24# injectors are overkill on s52's. at most i would recommend the s52 cams.


are you staying OBD2?

[E30DriftMissile]

im retaining obd2. i dont really know why everyone does obd1 swaps ive read like 5 STORY BOOK threads on it i still cant see obvious pro that outweigh labor :dot: im also in the process of collecting parts for my turbo build...i have intercooler and tial 44mm wastegate i got from friends, so before or by new years i hope to have turbo either bolted on or parts assembled. looking for 350hp not really leaning to 4 as to avoid engine mods-arps HG blah blah. so like 6-10 psi as a DD any help or parts is welcome too thanks

[nrubenstein]

im retaining obd2. i dont really know why everyone does obd1 swaps ive read like 5 STORY BOOK threads on it i still cant see obvious pro that outweigh labor :dot: im also in the process of collecting parts for my turbo build...i have intercooler and tial 44mm wastegate i got from friends, so before or by new years i hope to have turbo either bolted on or parts assembled. looking for 350hp not really leaning to 4 as to avoid engine mods-arps HG blah blah. so like 6-10 psi as a DD any help or parts is welcome too thanks

Until a few years ago, you could make a LOT more power on OBDI because they had not cracked the tuning.

[evandael]

if youre planning on going turbo, maybe consider obd1. I know TRM is working on obd2 turbo tuning but it's not popular yet (read: expensive).


also, if you're building an m52 with boost, skip the s52 cams. then use the money you saved to o-ring the block, get a new OE headgasket, and ARP head studs. that should be good for 10psi and 350hp on a quality tune (obd1 or obd2)

[E30DriftMissile]

if youre planning on going turbo, maybe consider obd1. I know TRM is working on obd2 turbo tuning but it's not popular yet (read: expensive).


also, if you're building an m52 with boost, skip the s52 cams. then use the money you saved to o-ring the block, get a new OE headgasket, and ARP head studs. that should be good for 10psi and 350hp on a quality tune (obd1 or obd2)

hmm i see. doesnt sound like a bad idea. now what exactly do you mean oring the block? and OE HG? is tht a brand lol

[evandael]

y'all best do some reading before digging in too deep.

o-ringing is a process in which an o-ring channel is cut into the block around each cylinder bore, and a length of copper wire is placed into. the resulting o-ring engages the headgasket for better sealing.

OE just means original equipment. don't get victor reinz. buy original BMW. also, MLS (multi-layered steel) head gaskets are okay in certain applications but it can be tricky to get them to seal.

[Wanganstyle]

if youre planning on going turbo, maybe consider obd1. I know TRM is working on obd2 turbo tuning but it's not popular yet (read: expensive).


also, if you're building an m52 with boost, skip the s52 cams. then use the money you saved to o-ring the block, get a new OE headgasket, and ARP head studs. that should be good for 10psi and 350hp on a quality tune (obd1 or obd2)

OBD1 is outdated bleh for brains.

if you are buying a real turbo setup the tuning is small potatoes in the equation.

OBD2 turbo = proper setup. Pay up to play.

obd1 +turbo is = flash back to 1995 for brains.......do you really need that ? it's almost 2013

[evandael]

OBD2 turbo = proper setup. Pay up to play.

this is the big deal. i know OBD2 is best. but as far as accesible turbo tuning, OBD1 is far more economical and convenient for most.


i was just throwing out an option for OP. obviously he is the one that needs to look at all sides of the argument and make a decision. and i personally think he has a lot of research to do.