ELiminating Idle

[said]

Hello!

im new to the forum! i've been reading loads of stuff, really great info available!

I have a couple of questions, and hope somebody can help me out.

Im building an S54 for a track car only. This car has individual brakes, etc, so it won't need a brake booster.

Question is, can i get rid of the vacuum tube next to the fuel rail? and seal the TB vacuum port? i will need a vacuum for my FPR, so i can do a custom plug on one of the TB for this.

Im new to the S54 world, so i hope its okay for me to ask questions!

thanks!!!

[nando]

why? it's going to be really hard to get a stable vacuum readout without that distribution manifold. you know people with aftermarket ITBs often have to build something like that from scratch, right?

a vac reading on one TB is going to be pretty poor. that's why they added the manifold.

[said]

mmm

my s14 race engine has the FPR from one TB and its working just fine... i just need to know if there will be any problem getting rid of that tube and putting plugs on the other 5 TB

thanks for the help!

[nando]

Are you running standalone? The ICV is integrated into the throttle input on the S54, if you are using a stock computer its not going to work without that tube (or the ICV).

I guess i just don't get the point of deleting it.

[said]

i will be running the oem ecu, but flashed... i guess they can delete ICV from the program

Real race engines don't have ICV, you start them and play with them until they get in temperature.

i just need the vacuum for the FPR, thats it

[nando]

are you sure about that? it's integrated deeply within the throttle control algorithm. actually I've been working on cutting out much of that myself and it's not as simple as a couple bytes or anything.

not sure what you gain by deleting it, but whatever. I told you what I know about it. :)

[said]

found the air tube, so im not deleting the idle anymore!!

im stuck with the drive by wire, i would love to delete it, but lots of people say its better for the functionality of the ECU, so i think ill just keep it

do you know what difference is between the SMG throttle pedal and the 6 speed?
if my ecu came from a smg, but i am running 6 speed, which pedal should i buy??

thanks!

[nando]

you can't delete DBW and use the stock ECU. not unless you are good at assembly programming..

there's no difference between SMG and 6 speed. actually, any E46 pedal will work, or any BMW of the same generation (E53, mini, etc)