Astor XS XU7J4RS (For Sale £1000)

[C.A.R.]

This is why I no longer recommend the GTi6 manifold conversion. It's worth it on the exhaust side but not the inlet.

You get increased throttle response due to the larger throttle pot, but there is a huge dead-spot like you have already experienced. I'm told this is caused by the ECU becoming confused, it isn't complex enough to deal with the larger intake size or calculate the fuel required properly. Basically trying to operate outside the factory parameters it was set up with.

I turned my last 1.8 back to standard manifolds and much preferred it. Best combination is a nice cone filter for some noise, into a GTi6 exhaust manifold. Lurverly.

PS. really don't bother with GTi6 cams either as this only exaggerates the problems you already have...