RHDEngineering ITB

[danewilson77]

My initial thought is that's a ton of money for 20 HP.

http://racehead.com.au/products-page/throttle-body-kits/bmw-m54-itb-kit/https://uploads.tapatalk-cdn.com/20171011/aad1ac299de11804f46d07764bff2bf5.jpghttps://uploads.tapatalk-cdn.com/20171011/f668138586cf155c3b1d5c3c50625a38.jpghttps://uploads.tapatalk-cdn.com/20171011/1b7a96cb4d8ea1d04f61ddd17f7c0fc3.jpg

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[Snuffalufigus]

Looks gorgeous though!


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[Pip]

Pretty neat but ouch


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[slater]

i think 20hp is the bonus... the sound alone is probably going to be worth it!

coding out the DISA will be a must, but it does mention about a "complete idle control valve circuit".... i mean, we've got DBW throttle bodies, so i wonder how they handle that.

looks nice though. would love to hear how it sounds!

EDIT: "Drive by wire throttle operation is not supported." whoops. i guess it's out of the question then... ;)

[az3579]

EDIT: "Drive by wire throttle operation is not supported." whoops. i guess it's out of the question then... ;)

Yeah, this doesn't make sense. All M54's had drive-by-wire as far as I know... so how is this product supposed to be a bolt-on for a motor that utilized a drive-by-wire throttle body? lol

[ZHPizza]

Yeah, this doesn't make sense. All M54's had drive-by-wire as far as I know... so how is this product supposed to be a bolt-on for a motor that utilized a drive-by-wire throttle body? lol

It looks like you actually add a throttle cable during install...?


This is a complete bolt on kit that will fit m54 bmw engines. Kit is supplied with standard m50/42/44 cable attachment that will fit both LH and RH drive vehicles. Drive by wire throttle operation is not supported.

Edit: nvm. The engine pic below looks to be an S52. I don't know how this works.

http://racehead.com.au/wp-content/uploads/2015/01/m50-itb-e36-instal.jpg

[az3579]

I have a feeling they are either falsely advertising this product or made an honest mistake stating it's for an M54. It's not as simple as "we've provided a throttle cable"... that requires modification to make it work, as well as the software (DME, MK60, maybe EWS?) implications of making this work in a non-halfass way (read: warning lights) makes this more complicated than they lead us to believe. That means this is not truly bolt-on for an M54 application...

[ZHP_Brandon]

I have a feeling they are either falsely advertising this product or made an honest mistake stating it's for an M54. It's not as simple as "we've provided a throttle cable"... that requires modification to make it work, as well as the software (DME, MK60, maybe EWS?) implications of making this work in a non-halfass way (read: warning lights) makes this more complicated than they lead us to believe. That means this is not truly bolt-on for an M54 application...

Interestingly enough I agree with your argument, but I follow @2MRichard if I’m not mistaken on IG and he has a Turbo Top Mount ZHP widebody coupe, and he has modified his throttle body to have a throttle cable, etc.... Not to say it is easy, but I agree with you on the heavy modification because his entire build appears to be custom, I question the integrity of this though because why has no one whether Race car or not, has had a true review of this product? i call false advertising


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[Sockethead]

There is probably only a handful of people in the country that would actually take an M54 this far...

[Newjack]

Yeah, this doesn't make sense. All M54's had drive-by-wire as far as I know... so how is this product supposed to be a bolt-on for a motor that utilized a drive-by-wire throttle body? lol

Yeah it says it comes with an M50/42/44 cable attachment so I'm guessing you have to install the cable and can no longer use drive by wire.

I thought this looked pretty cool until I shit my pants at the price tag.

[az3579]

Yeah it says it comes with an M50/42/44 cable attachment so I'm guessing you have to install the cable and can no longer use drive by wire.

I thought this looked pretty cool until I shit my pants at the price tag.
Not only will you not be able to use DBW, but the traction control system won't work either, and you'll be greeted to yellow warning lights every time the car is started.

I really don't know why this bothers me so much. Somebody explain! lol

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[Newjack]

Not only will you not be able to use DBW, but the traction control system won't work either, and you'll be greeted to yellow warning lights every time the car is started.

I really don't know why this bothers me so much. Somebody explain! lol

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https://i.imgur.com/2DmOT61.jpg



http://i.imgur.com/YMo49xn.jpg



EDIT: Why is it showing the same image again but saying attached image?

[holyc0w]

This is not just gains to the top end but little to no losses to the lower and mid range.

Hmmm... I would like to keep the low-end and mid-range.

[CarbonZHP]

Slap a BMW Performance brace over the top of it and make it turbo. Id take that motor over an S54. Much more character.

[az3579]

Slap a BMW Performance brace over the top of it and make it turbo.

I hope you don't mean the carbon fiber one.
Would be a total shame if it cracked. :shifty

[Sockethead]

Slap a BMW Performance brace over the top of it and make it turbo. Id take that motor over an S54. Much more character.

yep, that would be the best use for it.... the stock M54 manifold doesn't play well with FI... too many holes in it...

[330CI780]

I contacted RHD ages ago about how to make this work and they said that it could work with the stock PPS and EMU wired to a M throttle body actuator (S54 probably) assuming you can mount it and get the linkage to work with the kit.

"yes thats exactly what i was saying, i have seen someone making some s60 throttles open and close using the factory m54 ecu, he just tapped the wires from his engine bay and ran them to an engine that was sitting on the floor and the throttles all opened and closed etc. So it will work using a standard m54 ecu and an M series actuator! (s54/62/85 etc) The actuators can be picked up second hand quite cheap.

Now im not saying the ecu still wont need a little bit of tweeking etc but it can definitely be done and fundamentally it will work straight off."