throttle body

[marcy]

has any tried a larger throttle body yet ive got a 02 cooper and wanting a bit more bottom end (acceleration) wondered if a larger throttle body would make a differance

[roland2003]

Hi ,we do a 57mm TB for the Cooper. We havnt measured the performance increase but they do feel a little more lively. They are £239+vat on exchange.
Best Regards Roland GTT

[MINIAC]

Quote: Originally Posted by marcy (original)

has any tried a larger throttle body yet ive got a 02 cooper and wanting a bit more bottom end (acceleration) wondered if a larger throttle body would make a differance

Not much "bang for the buck" from a larger throttle body. They might improve throttle response but offer little power gain.

[CC07ERS]

Quote: Originally Posted by MINIAC (original)

Not much "bang for the buck" from a larger throttle body. They might improve throttle response but offer little power gain.

well said that man dito

[B-R Mini]

-klik-

[GARY GP]

Quote: Originally Posted by B-R Mini (original)

-klik-

2-3 horse power for £290!.....

[roland2003]

tbh any modding of the Cooper yields only small power increases 'per pound spent'. Cooper S is the one to go for if power/modding is your goal.
Best Regards Roland GTT

[B-R Mini]

Quote: Originally Posted by gary bartle (original)

2-3 horse power for £290!.....

Horsepower is not always THE thing!
Because the larger TB I can use my max. torque and HP earlier!
I have the TB of M7 Tuning, they flat the ash too for more airflow.

[minioneandrew]

Thinking of getting my throttle body machined??? Does it make the car feel faster lower down?

[MiniG]

I haven't had a look into the stock TB yet, is it a two stage type or a single valve? Also, what are the aftermarket offerings? There used to be a mod for the 1st gen water cooled VWs that was called a "Big Bore throttle body and it made the car much more responsive but virtualy undriveable!
It was like an on/off switch.
Swapping to a larger two stage TB felt better and did allow more airflow in at a time.
Is there also room for improvement in the intake manifold? Port and polish type work?

It's nice to start getting back int this stuff!

[marcy]

got my throttle body today i know it wont increase bhp but will ad throttle response so thatll do for me when i get a re-map that should help more to thinking of gettin blue finns will be lot easyer to install for me been in the middle of nowhere

[Ant FR]

Does the larger throttle body make much differnence on the Cooper S, is there much involved in the fitting of it??? I assume might make it a little deeper on acceleration too, with potential for a few more pops from the exhaust.

[TimCrighton]

On the cooper you are better off sensibly modifying the existing throttle body which will provide as large a power increase for less than a third of price! Quite a lot can be done to these including machining the screw heads, polishing and edging the butterflies