Removing Butterflies from UIM

[allstaruk]

Pretty much as it says in the title,

Who has removed the butterflies in the UIM and have you noticed any differernce at all, also whats the best way to go about this.

Alan

[kev-yorks]

If you send a pm to Matt username arrouk he\'s removed butterflies and ported his throttle body.
Kevin

[allstaruk]

Cool will do, has anyone else got any info or done this?

A

[Jono FD3]

Butterflys in the UIM?? Didn\'t know ther was anything in there!!!

Mate has removed them off his GT4 & says there is a big difference in power!!

Jono

[allstaruk]

Yep there are butterflies in the UIM for the double throttle actuator

[memski]

Yep done it on mine, removed the centre divider - some say on the US forums that it makes little difference. Running my car in at the moment and have changed a lot of other bits so can\'t comment on whether it\'s worthwhile.

[LRP]

sounds interesting anybody else shine light on this ? before i put it back 2geather picking uo ported plate today. getting closer to start up

[Crazy Eddie]

Sorry I\'m not going to help here but do you mean in the Plenum itself?
Just wondering as have a polished one to put on and so could do it before fitting.
Cheers
Eddie

[m4drx]

think he means the throttle body mate

[m4drx]

i want to do this on mine too (not just loitering to point things out!)

[Jono FD3]

Hold on..... are we on about the twin choke system in the throttle body or is there another set of butterflys that open at a set rpm in the manifold that runs accross the top of the engine itself (UIM)

Jono

[Crazy Eddie]

Sorry Allstaruk, but hopefully will help
These are the butterflies that I mean in the Plenum itself (is the plenum AKA UIM?)
Hope this helps are these the ones you are refering to?

[memski]

Lol yes the uim; removed the double throttle altogether (not the throttle body butterflies). The double throttle on the plenum is there as a safety mech and opens up once the car is warmed up to allow the secondary runners to flow, so it means you have to resist the temptation to boot it until the car has been properly warmed up.

[m4drx]

so the throttle body has 3 plates and plenum also!

had no idea??

is that the same on all of our cars?

[Crazy Eddie]

That\'s what I thought as you cant remove the ones in the throttle body otherwise surely you would have WOT all of the time ?:rollin :Hammer