Throttle body question

[AKS200]

hey all

just wondering if there is any use in changing the throttle body on a dc2r, are there and huge power gains from it or any other performance related aspects. if so what brands can you guys recomend.

cheers

[kavehman]

I have the spoon throttle body.

With a stock intake you wont make any power gains on the dyno, but combine it with a mugen intake and you do notice a big difference. The throttle body on its own gives better response in my opinion. This would be the last mod for most people.

[AKS200]

well i have ordered my mugen intake so i will be using that, did you need to change your ecu or can you leave the stock ecu?

[tinkerbell]

i bored my DC2 TB out to 63mm from 60mm but i am running a 2 litre block...

there was no real change... (except in part throttle response)

{EDIT - but i did not have an optimum set-up, so it is quite hard to determine the effect of the TB on peak power}

[noodleman]

you can still run your stock ecu with aftermarket tb

[AKS200]

ok cool cool, well im pretty much looking for more power without doing any internal work....how much is a spoon TB?

[tinkerbell]

spoon is same ID as OEM throttle body,

the only difference is the tpaer from 70mm to 62mm - this creates a venturi effect speeding up airr flow as it passes the throttle opening...

( http://en.wikipedia.org/wiki/Venturi )

does your car already have intake, headers and exhaust? (i know it has intake, but what headers?)

[Jingers]

http://www.spoon.jp/jp/products/line...php?category=4

refer to here for a general outline on pricing.

50000 yen or so

$561 ish aud but factor in shipping/duty/customs

[AKS200]

spoon is same ID as OEM throttle body,
the only difference is the tpaer from 70mm to 62mm - this creates a venturi effect speeding up airr flow as it passes the throttle opening...
( http://en.wikipedia.org/wiki/Venturi )
does your car already have intake, headers and exhaust? (i know it has intake, but what headers?)

well the intake is coming soon and headers should be here this week, i have bought 5ZIGEN 4-2-1 headers and will keep stock exhaust until i can afford soemthing else if needed.

[tinkerbell]

LOL @ keep stock exhaust.

this is the order you shoudl modify:

1. exhaust
2. intake
3. headers
4. ECU
.
.
.
.
.15. throttle body

[AKS200]

LOL @ keep stock exhaust.
this is the order you shoudl modify:
1. exhaust
2. intake
3. headers
4. ECU
.
.
.
.
.15. throttle body

haha...i will eventually change the cat-back, i just need to save up a bit before i go buy one and i wan to make sure its exactly what i want.

so you reckon i should get a ecu?, is there much to tune though?

[tinkerbell]

no, i reckon you should upgrade your exhaust!

[AKS200]

hopefully i should have a decent cat-back by the end of the month, just waiting for a few reply's

[hebe]

Hey Harry, there was a member on here who tuned a stock car and his power graph looks pretty neat

http://forum.clubitr.com.au/showthread.php?t=977

[freakygeek]

no, i reckon you should upgrade your exhaust!

I am quite sure the header upgrade will make more power than just an upgraded catback. Obviously both at the same time is the ideal solution.