throttle body water plates, necessary?

[xwill112x]

any gain in hp after removal?

[brenters]

i haven't done it yet, still trying to get the engine to run first.  I think the engine would run more efficient and healthier without heating the air coming in but I would be surprised if you'd actually feel a hp increase.  I wanted to do it more because of proper engine theory as opposed to actual hp increases.

The other way would be to wrap the exhaust to heat the back end of the motor more.  In basic high school chemistry we were taught engine theory, any kind of engine will run more efficient if the temperature difference between the intake and exhaust is as great as it possibly can be.  So I know the theory, now it's just a matter of putting it all together.

[EN318isPDX]

i haven't done it yet, still trying to get the engine to run first.  I think the engine would run more efficient and healthier without heating the air coming in but I would be surprised if you'd actually feel a hp increase.  I wanted to do it more because of proper engine theory as opposed to actual hp increases.

The other way would be to wrap the exhaust to heat the back end of the motor more.  In basic high school chemistry we were taught engine theory, any kind of engine will run more efficient if the temperature difference between the intake and exhaust is as great as it possibly can be.  So I know the theory, now it's just a matter of putting it all together.

Problem with wrapping exhaust is it tends to make it crack ALOT faster

[adam12hicks]

Yes I noticed .025hp gain.  I can really feel how much cooler the air is going in

People make a big deal out of it, but if you feel the intake manifold after running hard for a 20 minutes or more it gets HOT.  I have to imagine the air is heated more going through the (engine) heated intake runners than the little throttle body plate anyways.  

My car is definitely making more power than when I bought it (133k on the clock now, bought it at 130k) but that's due to a combo of better NGK plugs and new wires, a Mark D 93 octane chip and a full exhaust from the headers back.  I've also replaced all of the vacuum lines (after removing the throttle body heater plates), and fixed some things like a sticky throttle cable with a new one and a new TPS / ICV.   All easy stuff and all of which have made the car run much better.  It feels like a nice smooth running BMW now

[EN318isPDX]

Yes I noticed .025hp gain.  I can really feel how much cooler the air is going in

People make a big deal out of it, but if you feel the intake manifold after running hard for a 20 minutes or more it gets HOT.  I have to imagine the air is heated more going through the (engine) heated intake runners than the little throttle body plate anyways.  

My car is definitely making more power than when I bought it (133k on the clock now, bought it at 130k) but that's due to a combo of better NGK plugs and new wires, a Mark D 93 octane chip and a full exhaust from the headers back.  I've also replaced all of the vacuum lines (after removing the throttle body heater plates), and fixed some things like a sticky throttle cable with a new one and a new TPS / ICV.   All easy stuff and all of which have made the car run much better.  It feels like a nice smooth running BMW now

OT: what headers did you get? i've yet to find a decent M42 header.