Ok im having my 88 GTU Taken in and im getting my TB modded. in other words im getting it ported out and putting a bigger butterfly in it. now i have been told that inside the TB is coated for less air resistance going into the engine. but if that is true then will modding my TB really help even thought if the coating on the inside is ground.


oh and i searched and cameup with nothing

 

Have you even looked at the TB yet? It doesn't have one bore, it has three. The casting is quite thin so there's very little metal that can be removed to accomodate bigger throttles.

All this work you have planned is a waste of time and money. The stock TB is huge for the power an NA can make on the stock intake manifold. Turbos can make 400hp with them. Any airflow mods you make are going to have at best a tiny effect on performance. If you're getting this done for free then you're just loosing a bit of your time, but please don't pay for this...

 

at the same time that the guy is gonna do this he is also gonna do some other stuff such as removing the PS and the A/C and work on removing the rest of my emission.

 

Who is doing the work?
Do they specialize in this type of work?

Do they realize that the throttle butterflies have an assymmetrical bevel on the edge?
It's not as simple as just cutting out the appropriate shape.
You need to get the edges beveled right, or they do not seal correctly.


-Ted

 

yea this guy knows what he is doin ive seen his work and seen how it does out on the track and needless to say i am very impressed

 

soo a tb mod dosent work for a n\a??

 

It's not that it doesn't work, it's just that it does stuff all. If you can do it yourself and don't mind spending the time there's no reason not to do it. It's just not worth paying for.