41 replies to this topic

[Winstar]

Why cant the normal tb be fitted? Just doesn't work with the z20 wiring?

I presume the ECU needs to know the closure characteristic of the TB so has to be one it already works with or has to be programed in.

[NickB787]

Got a 56mm z20 tb in the garage, if you found a 60mm butterfly valve then you could probably port it all and fit that... But still 8mm down... Which isnt the way to go

Ideally a nice 70mm will do if it is not cable driven.

Why cant the normal tb be fitted? Just doesn't work with the z20 wiring?

It was Jon who said I would need one, so I take it that the z22se 68TB won't work for some reason.

what does klasen run on his 600 bhp speedster?

I thought that

[vocky]

the internal electronics of the 2.2 throttle body are totally different to the vxT so they cannot be swapped itb's

[The Batman]

any other car that uses the same ecu? other than the 1.2

[vocky]

I think an Audi tb works, but not sure which one itb's

[The Batman]

I will do some research then when I get some free time itb's

[vocky]

itb's ..... FAB

[Nev]

Just to add some info to this thread. There are 3 sources of enlarged TBs that I know of: 1. Courtenay. 2. 888Dan on the Astra owners club 3. Another guy on AOC. I am currently looking into other cars that run Bosch 1.5.5 and see if any of them have larger TBs. Though a like for like replacemnet may not work as there may be a calibration table in the ECU that would need adjusting.

Edited by Nev, 06 November 2010 - 08:01 PM.

[NickB787]

anyone have the pin layout info on the 68/57 so I can send it to an Audi chap who might be able to help

[Crazyfrog (Fab)]

itb's ..... FAB

oups sorry ...i do like them

[Nev]

Well, I've just sent my TB off to someone I've been in contact with off AOC (for enlargeing from 57mm to 62mm). Price £120 (inc P&P). I will let you know in 3 months time if it works hopefully. Nev.

[NickB787]

Well, I've just sent my TB off to someone I've been in contact with off AOC (for enlargeing from 57mm to 62mm).

Price £120 (inc P&P).

I will let you know in 3 months time if it works hopefully.

Nev.

3 months great!!!!! am still looking

[The Batman]

You can buy a brand new 62mm off eBay for £320 The problem is this will reduce our power alot nick so we need a 68mm or bigger! Like I said biggest I have found is a 64mm which is also cheap but still not big enough Really don't wanna go cable throttle!

[siztenboots]

this thread might give you all the information you need http://www.mbworld.o...-body-info.html

[siztenboots]

this thread might give you all the information you need

http://www.mbworld.o...-body-info.html

it will probably end up with a Bosch / Audi V8 077-133-062-A part

[siztenboots]

stupid non mod status can't fix the links above

anyway, Audi B7 RS4 , iirc has 90mm ETB , probably the biggest single TB before they go dual TB with the RS5 70mm

some useful comparisons on turbo apps
http://forums.fourti...ead.php?4690902

Edited by siztenboots, 11 November 2010 - 09:55 AM.

[Winstar]

probably the biggest single TB before they go dual TB with the RS5 70mm

I did wonder if it would be easier to go to dual 57mm ones

[Nev]

Yea, I thought about going dual too, as I have 2 TBs in my garage. The wireing would need to be adapted (and maybe a small PCB with some lectronics to union the 2 position sensors feedback)? Would anyone here know how to do this ? Nev.

[The Batman]

a 68mm tb is currently on its way to me

[Nev]

Joe, I'd be very interested to know if you can just plug it in and it works - please update this thread when you find out