Throttle Body

[CJ_Boxster]

Originally Posted by blue2000s

That's the entire throttle body, not just the plate, but it does sound like it's larger. Then you polish from there.

Without increasing the plate size.. You would be just widening the outer surface and tappering it up to the plate then polishing it... While the air will flow through much smoother, you are still bottle necking the air at the plate, so im not sure how much power you can get out of it.

[blue2000s]

Originally Posted by CJ_Boxster

Without increasing the plate size.. You would be just widening the outer surface and tappering it up to the plate then polishing it... While the air will flow through much smoother, you are still bottle necking the air at the plate, so im not sure how much power you can get out of it.

Exactly, that's why I made my original comment about the larger plate.

BTW, it looks like an exchange program with the throttle body, so they're probably just reworking stock parts and adding their own throttle plate.

Also, throttle plates can be modified to be more aerodynamic when fully opened. Things like knife-edging and shaft smoothing can be done to improve flow.

[CJ_Boxster]

^^^ my bad, thought you were the topic starter, After i read all the comments, i ran to the top to see who started it and i was 1 (page Up) from seeing NickCats comment.

[Ghostrider 310]

A very trusted mechanic pointed out to me that the rest of the Boxster intake remains unchanged, making a throttle body mod impractical.

[John V]

To add to what blue2000S wrote, sure, a larger throttle body can "improve" throttle response. You're letting in more airflow at a given throttle position versus the stock throttle body.

You can get the same effect without spending any money by pushing the throttle pedal more.

[Ghostrider 310]

I'm in conflict about this throttle body. The mechanic who told me it would not help is a considerably talented Porsche mechanic who posts on some other BB's. However, I noticed Techart uses one in their 2.5 powerkits. They seem like a trustworthy aftermarket supplier. I have to admit though their website claims 230Hp out of a 2.5 with just a SS exhaust, throttle body and ecu upgrade, I smell marketing at work...I'd love to do that mod but I'm skeptical.