Throttle Body: Early vs Late

[Jimbob]

Hey guys, got a Zone BBTB today and went to replace an early m20 throttle body, but I found on my TB that there were 2 breather pipes on the right of it whilst only 1 hole on the Zone TB. I gather it's off a later m20? If so can I just drill through it? Everything else seems ok

[Jimbob]

[rowemeister]

Do you mean the pipes that go to the brake servo?
Post a pic if you can mate

[Jimbob]

Yea those are the ones...will try and get a pic

[Jimbob]

On the one currently fitted this hole actually goes into the bore

[rowemeister]

The fact the hole is half there (if you know what I mean) I would drill it.

[Jimbob]

Yea thats what I was thinking! Well I won't be able to do it until 1pm so if anyone else would like to share their opinion please feel free

(P.S gotta love the Sony Ericsson K750i!!)

[rowemeister]

Not seen that phone mate. I have the Samsung D500!!!

I dont think you have any other solution than to drill mate. It should be easy enough.

[Jimbob]

Sorted, had to drill a 10mm hole! Haven't had chance to see the benefits yet, that's for the drive home

[rowemeister]

sweet. let us know what you think.

[Jimbob]

Bolted on a K&N last night (shoulda seen the state of the air filter in the airbox!!) and with the BBTB (which seems like it wasnt used since it was bored out) the car definately feels a bit better on the revs/throttle response.

[rowemeister]

sweet. The biggest gain i found with the bbtb was part throttle performance improved.

Remember any HP and performance gains are basically a sum of parts.

every little thing you do adds to the last.

[zip88]

I recentlly fitted a BBTB to my 320 and mid range about 1800rpm+
is a lot better car feels a lot easier to drive,find I'm not having to
use as much throttle at lower revs

[alpina527]

There are four different types of body.

[zip88]

mine is zone BBTB for m20