Obd2 s52

[Varinn]

No issues with the throttle cable. The worst part about using the ix booster is the way it clutters up the space around the master cylinder and it comes quite close to the manifold. I ended up trimming a couple fins on my intake to give some space.

[robgoesvroom]

Wow so much more clearance with the M50 manifold. I have OBD2 manifold and ribs trimmed off and the booster is still rubbing. Did you get a tune for the M50 manifold?

Looks like I need to save up and get that M50 manifold swap kit!




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[Varinn]

It is tuned for the OBD1 manifold, I had the entire DME flash done by Markert with good results. I have yet to have the motor dyno'd and cannot compare it to an otherwise stock M3 as I have yet to drive one but it feels very powerful on the top end though somewhat lacking under 3500rpm.

I do plan on having it thrown on a dyno purely for seeing what my curve and AFR are like, but it is going to have to wait as I'm prepping for a head rebuild very soon. If you want any detail pictures of my setup while it's apart send me a PM and I can try to grab some shots of it. I do not often check the board lately and may miss a post in this thread.

[agent]

it feels very powerful on the top end though somewhat lacking under 3500rpm.

From what I understand, the M50 manifold will add a little HP and upper-end oomph at the sacrifice of a little torque and low-end oomph.

[drulle]

shit sorry, I didnt see your earlier post and barely caught this one.

I went with the tried and true method and installed an m50 manifold with m50 throttle body. The design is significantly different and it bolted up much easier, but I do remember having to trim the "bushing" that mounts the linkage to the throttle body bracket to allow me to adjust it correctly.

Still using the e34 throttle cable without issues.

I am installing s52 (keeping it OBD2) with obd1 intake minifold. Did you hook up charcoal canister? I want to delete it but not sure what to do with vacuum hoses. Any help is appreciated.
BTW, I had my ecu flashed by Dave as well, can't wait to drive my e30!

[robgoesvroom]

I am installing s52 (keeping it OBD2) with obd1 intake minifold. Did you hook up charcoal canister? I want to delete it but not sure what to do with vacuum hoses. Any help is appreciated.
BTW, I had my ecu flashed by Dave as well, can't wait to drive my e30!

I kept mine and my car runs!


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[Varinn]

I am installing s52 (keeping it OBD2) with obd1 intake minifold. Did you hook up charcoal canister? I want to delete it but not sure what to do with vacuum hoses. Any help is appreciated.
BTW, I had my ecu flashed by Dave as well, can't wait to drive my e30!

You can keep it, or you can remove it. That is entirely up to your own discretion really. I kept the charcoal canister installed at the time but did not have the correct hoses to connect to the solenoid. I am planning to remove the can when i yank the head to clear up a little extra space. Go to any auto parts store and you should be able to buy an assorted pack of various size rubber vacuum caps for under $2. Use them to plug any open ports that you are removing an item from.

From what I understand, the M50 manifold will add a little HP and upper-end oomph at the sacrifice of a little torque and low-end oomph.

That's exactly what I had seen as well and the reason i wanted to try and keep the obd2 manifold at first. I've since learned to live with the high-rpm nature of the motor but I do like the idea of having more bottom end for cruising around.

[roznic]

Great info here!
Right in the middle of s52 swap-OBD1 converted, with Dinan BBTB, do I still use the e34 throttle cable?
Thx in advance for any info

[drulle]

[quote=Varinn;4135867]You can keep it, or you can remove it. That is entirely up to your own discretion really. I kept the charcoal canister installed at the time but did not have the correct hoses to connect to the solenoid. I am planning to remove the can when i yank the head to clear up a little extra space. Go to any auto parts store and you should be able to buy an assorted pack of various size rubber vacuum caps for under $2. Use them to plug any open ports that you are removing an item from.

Thank you for replying. I will look more into this. Great info...