If a VTA is so evil how come mine has lasted 57,000 miles and has gradually crept up from 265 to over 400 bhp.... running >2 bar of boost without dying ?

dunx

P.S. You honestly need to think about the transient conditions that exist for less than a second, a few times a week ?

P.P.S. Best value mod on my car is the Whiteline rear adjustable anti-roll bar.

 

dunx its the luck of the draw matey there will be 100s of peeps with vtas that sware by them never had a prob etc etc and there are 100s of peeps that will say they have caused probs at the end of the day though it is a fact that a vta is not designed to be used on a scooby engine end of

its a gamble what ever way you look at it some you win some you lose but at the end of the day its your car and your money

 

Lol. Laundered diesel. Lots to think about, put the oe dump valve on for now to see he difference.

 

one thing that always bothers me about dump valve discussions is how there are so many people who say 'it will be fine if its mapped for' how can you map for a vta dump valve ?
On a maf based system the air that enters past the sensor is obviously measured and the desired amount of fuel injected, now if you vent that air off when you lift the throttle obviously you will be slightly rich, now how do you remove this 'excess' fuel when you could lift off the throttle at any point (on boost) without leaning out the whole map ? Seems to me its just more 'scoobynet advice' spread by people who just read it somewhere and take it as gospel. If any mappers read this i would love to hear your views.

rant over