Group A Twin Throttle Body on 215i

[HSVGTS]

Anyone……..

I’m putting a VN Group A twin throttle body on a 215i.

Can I run the standard 215i injectors, the motor is a stock VR HSV GTS.

Thanks, regards……….

[Sonnymad]

Hi there,

yes you sure can though putting the twin throttle manifold is gonna change everything will need a retune defenantly as we experienced it ourselves after fitting one to a 215,it will develope a flat spot and splutter and carry on,you would have to see a tuner to retune it to the twin throttle body setup.

regards sonny

[HSVGTS]

Thanks Sonny, if you think of anythink else or have any advice it would be appreciated. Thanks again regards, peter

[QIKMIK]

MOTOR ran an article about this mod a few years back when the 5-litre was getting pensioned off. HSV's chief engineer said they did it in testing and got an easy 300 fwkw. As sonny said, she'll need a retune.

Mick

[Wezza]

I don't know whether you would want to spend the extra cash, but maybe a bigger cam to compliment the manifold would help as well.

[shayne]

I don't know whether you would want to spend the extra cash, but maybe a bigger cam to compliment the manifold would help as well.
Yeah I don't think it'll give you much of a power hike without changing the
cam to be honest!I would also raise the comp and tickle the heads while
they were off.I run a GRP A manifold on my stroker, but with decent comp
and a fairly big cam,I rekon on a stocker you'd lose to much bottom end
(torque) compared to the gains you'd make at the top end,due to the low
comp they run.cheer's.

[HSVGTS]

Thanks men....

Any suggestion on type of cam, it will be street driven.

I was thinking a COME roller cam and roller rockers, grind ?

What's the heads like on a standard 215i ?

Thanks again.............regards

[Wezza]

The standard 215i heads are the same as any Holden injected 5 litre pre VT. Be aware that if you intend to go for a roller cam, it will end up costing you quite a bit of money. But they are a good thing, very smooth power compared to anything the same size in standard hydraulic or solid. :)