UK-POLOS.NET - THE VW Polo Forum

Hi

does anyone know what the Variable Valve Timing does on a Polo GTI, Is it for emission or performance purposes ??

Cheers

At 4ks the valve timing changes to make them open longer/further? I think anyway.. for more power?

I think it is for both reasons.

I should imagine so, all I know is it sounds quality

thanks for the reply's !!!

Has anyone played with switching it on at different rpm's, using an after market ecu ??

Do you mean like a vtec timer that you can use on honda civics, etc.
I was thinking if this could be possible

Well lotus reckon that there is 2 cams in the elise and it switches from one to another at certain revs - personally i'd say it wasn't possible and i also think VVT is just another badge to the name

James

vvt = Varible valve timing

what this is, is at a certain rev level ie about 4500rpm on the GTi the ecu tells the engine to drop another valve in incressing power!!!

its a way for the manufactures to get around the emisions laws because a MOT is tested i read at 3000rpm i think.

Something like that anyway. there is lots o stuff bout it on the net.

all a boost controler does is it over rides the ecu when to drop the extra valve in! so you can tell it to kick in nice and low down the rev range!

can you get these controllers for the polo gti.??