2ndry UIM butterfly removal

[McCARTHY]

I\'d noticed people on rx7club doing this...something to think about

works a treat :yes

[BlitzBoy]

This was the first mod I did three years ago when going the single turbo route, just make sure any holes left are covered with something like chemical metal, the removal will help airflow to some degree all depends how much boost your pushing to make a relative difference

[allstaruk]

Or tap the hole and pop a 10mm bolt in.

Al

[McCARTHY]

It would be more long term if tapped with abolt for sure.

[allstaruk]

I only tapped it cause I had a 10mm tap and I don\'t have any chemical metal.

Al

[Jonathan_F]

Tapped M10 is best I reckon. No chance of anything dropping into the engine.

[interloper393]

would this make any difference to a stock twin turbo car? iv got a twin hks and exhaust system, no power commander tho so id need a remap if i did this? my plenums off for polishing so would do this also if i can

[McCARTHY]

My car at the is stock twin and yes it does help stop disruption of air flow. Worth doing if the UIM is off. I would say take out the middle bit too.

[interloper393]

so its safe to do with the standard ecu then?

[McCARTHY]

Yes mine is on stock ecu as i\'m going microtec in the future (i knowi said AEM before but its just not widey used on the fd\'s and i know the microtec works)

but anyway as i was saying, yes the stock ECU will be find. All you are really doing is aiding air flow.

[McCARTHY]

just don\'t hammer the car when cold

[interloper393]

kewl off we go to port my plenum :yes

[Grizzly]

Do you find its Lumpyer on Idle? when cold? I\'ve been told it acts a bit like a Choke and aids the Cold running?

Those of you that have done it on an FD does it effect The cold start? Do you have to Tweek the map to compensate?

[McCARTHY]

Yes it did get a little lumpy when i first put it back on. Its been fine since.

[interloper393]

the ecu would self adjust  wouldnt it?