twin throttle body is it worth it

[mitch1989]

hi guys i have just recently bought a twin throttle body manifold of ebay and was wondering is it worth getting do they make much power? and it doesnt come with any kind of linkage to join the throttle bodys does any one know how or where i can get a linkage to join the to throttle bodys together? or is buying a bigger throttle body more of a buy? it didnt cost me to much so thats a bonus! and what do i do about the tps and stuff do i need to run another one to accomidate the other throttle body any help would be greatly appreciated

[SV62NV]

Is your car a v6 or v8?

[HoZy]

Do you have a massive cam or forced induction? If not. You do not need twin throttle

Cheers
MaT

[GetToDaChopa]

As above NO

[Kirbs]

Not unless your car is worked. Throttle response may be a little better.

[shanhsv]

Places that sell twin throttle body manifolds say 20% more power on stock motor. Just the throttle bodies would do little thanks to restrictive holden manifold

[DannyboyDS]

you also need to take into account that the air flow is still limited by the MAF sensor, it will provide an initial burst of extra air as the two pipes leading to each throttle will act like a plenum and store it, but once that initial burst is gone, your back to normal air flow.

That's just the way I see it.

[customvt]

what kind of power would you get on a 4.2l stroker with large cam and ported heads and can you get a maffless tune on a ecotech

[mitch1989]

Is your car a v6 or v8?

vs commodore v6 ecotec

[WogBoyz]

vs commodore v6 ecotec

u wont notice much at all on a stock ecotec, how much did u pay for the twins?

[peckzz]

no one answered him how to do the sensors? i am curious for this as well as i have a vr motor worked internally and just bought this item but need to know how to wire it up

[peckzz]

ive heard if you have both butterflys opening at the same time you dont have to run 2 lots of sensors just one?

this is what the bloke said in a post on this forum

"no need to, just use the sensors from one TB. assuming that both TB's open together "

is this correct? if so this is so easy

[REWIRED]

I have heard ^^^^^^^the above aswell. I am currently doing the same thing to my worked v6 and both my butterflies open at the same time, i asume u use one set of sensers and plug the other holes up.

[greenfoam]

Yeah you only need one throttle with the sensors, fill the other with epoxy, JB weld, PC-11 etc. If you fell the car is getting more air that it needs too fast and the car is reaching full acceleration a long way before your foot is on the floor then you can run restrictors in front of both throttles untill you get them to the right size

[peckzz]

or could you just put bigger injectors and a custom tune for it?

[Reaper]

Not unless your car is worked. Throttle response may be a little better.

How would that be? You don't need the extra air on even a moderate NA motor so all the ttb does is slow down the air velocity which kills low end power. I think I calculated a stock single tb is around 500-550 cfm (from memory - it was a while ago) so twins is way way way overkill for just about any na v6 (and most of the 5 litres around too).

Reaper

[peckzz]

How would that be? You don't need the extra air on even a moderate NA motor so all the ttb does is slow down the air velocity which kills low end power. I think I calculated a stock single tb is around 500-550 cfm (from memory - it was a while ago) so twins is way way way overkill for just about any na v6 (and most of the 5 litres around too).

Reaper

well i just put twin tb on my vr, all it has is extractors and 2 1/2 exhaust, and 0-60 is improved quiet alot, very noticable, but does use more juice, so no twin tb is not a waste

[LX_HATCH]

peckzz sounds good what you have done. Have you got any photos of the setup?

Im looking at doing this mod if I go for a supercharger.

Will there be gains to have if it was blown?

[westbad]

Has anyone got a come racing ttb manifold on there 5.0?
Curios to know if they are worth the 2.5k price tag??

[Reaper]

well i just put twin tb on my vr, all it has is extractors and 2 1/2 exhaust, and 0-60 is improved quiet alot, very noticable, but does use more juice, so no twin tb is not a waste

How much faster is it?

Reaper

[peckzz]

How much faster is it?

Reaper

well 0-60 is incredible, definatly needs a tune, as it labours now, like manuals, yea my auto labours haha, nearly the power increase of extractors, but then again if i didnt have the extractors it might not of made much of a difference? im not sure but getting a chip made up from rob, a bloke on this forum that makes them up, that will definatly help it alot, because alot of people told me it wouldnt evan run without getting a custom tune, so i will keep you informed on how it goes, but definatly 0-60 and 80-130 had made a difference, alot more engine noise, and not a pod sucking engine noise but sounds more like the extractors are roaring more if that makes any sense?

this is the photo before i built a silver box for the pods, will post pics of the enclosure when i take some more

i have a 90mm ram pipe underneath the 2 pods and 1 that goes into the side box (which isnt in this pic)

[Reaper]

^^^^

So your 0-60 time before the ttb was:
and after:

Louder often feels faster but I'd like to know what the stopwatch says.

Reaper

[fkford]

^^^^

So your 0-60 time before the ttb was:
and after:

Louder often feels faster but I'd like to know what the stopwatch says.

Reaper

+1 .. louder feels faster, i think alot of people get confused with this.

[peckzz]

^^^^

So your 0-60 time before the ttb was:
and after:

Louder often feels faster but I'd like to know what the stopwatch says.

Reaper

i dont have 0-60 times though only 0-100
and yes i know what you mean by louder seems faster,
rough 0-100 time was high 7's before
will take her out the road tonight for 0-100 times, but i dont have a g tech, so i will do a couple of runs and get a rough figure, hopefully low 7's will be good, but not sure will let you know
but before i had the throttle body on me an a mate had a run and i was dead on 2 car lengths in front the whole 400m, so we will run again and i will let you know if i can beet the 2 car lengths as well as 0-100 times, (he was in a vn with exhaust and extractors, but that doesnt matter)

the motor has 337,504 kms on it, neva reco or nothin

[Reaper]

meh - 0-60 or 0-100 is no matter - just using your numbers. At best you will have a tenth or two in it and a stopwatch and speedo just isn't accurate enough. I think in a back to back situation your car is louder and (at best) the same speed. More than likely slower due to the drop in air velocity.

Reaper