Hey guys I would like to know the stock throttle body size versus the XF throttle body size please. Also Ive heard a rumour that the AU throttle body swap is once again bigger in size. Ive seen an ad for a guy that does 70mm throttle body fitted for $350.......

dude, can you either pm me details of this guy or post em up? i would very much like a 70 mm throttle body FITTED for $350!!!!!

std is 54 or 56mm. XF is 65mm. AU has a stepper motor idle control. generallly speaking on a VLT, u dont need bigger than 65 (if that!)

still, seems you can't have a throttle body that's too big, can you? if you have details of this person HSV, let us know!

Yeah I have details guys The guys based in Brisbane makes them for VN V6 onwards at the moment but expressed good interest in making the throttle bodies for VL's Apparentley they are either made or biillet? Not sure his mobile kept cutting out need to ring him after new years as his buisness is on holidays at the moment. He has agents in all states as far as I know too.....

sweet as dude! that sounds awesome. you'll have to send his number my way or post it up if ya can dude, i'm sure he wouldn't mind the extra business. or, you could direct us to whereabouts you saw his ad. paper? internet?

I run a GEN III 75mm throttle body on my calais turbo.Yes, its got a custom plenum to match.Works a treat. PSI.

Yeah its in the latest Parts Peddler near the back cant remember what its called exactly will find out on Mon morning and post it here (thank god for 4 days off!!!)

A larger throttle body might give you 1 fifth of **** all's difference without a new plenum. Your engine will only flow as much air as its biggest blockage will allow.

yeah that's why the plenum gets ported at the same time......

Yeah wasnt really picking on you dude, just stating the facts for those who didnt realise.

cool

but more restriction is less flow too it all ads up every bit helps

usually adding a bigger T/B on a turbo motor means it will make full power at less throttle percentage.

any updates on this guy, HSV? i'm keen as to get him to work on my car!

Adding a bigger Throttle body will give better response and better breathing characteristics. You can do a lot of things on the inlet side of the vl, thus plan out exactly what you effect you want. If you want to make big power, a custom log type plenum, or nizpro might be the go, with a big throttle body. If you want the stock look, an N/A plenum with a bigger throttle body might be better for your street application once again. Its not what you put on the engine - its how you package each part with one another. Thats where experiment comes in and money for things like a nizpro plenum - as its been developed really well and performs accordingly.

No Not yet he doesnt come back off holidays until the 10th from memory. Will be ringing him first thing that I can to get some info for you guys

Maybe we should all get together and ask this dude if we can get a special price for a bulk order of (just the bare) 70mm throttle bodies? If we can get maybe ten people interested it might be worthwhile. I will put my hand up for one.

that's not a bad idea!