Sean's (& Ed's & Scott's) Astor GTi6

[Ed Doe]

Right.

I popped out this evening to fit my new tyres on the nad, and then thought whilst out there I'd pop the icv from my old '6 on to see if it solved the aforementioned issue....

It now idles well, which is great; definitely an improvement, but the issue is still there... I had a bit of a play and got a video of the issue. It seems that the throttle is not progressive; if you gently open the throttle as in the video, the revs raise very slowly, then suddenly shoot up to 2.5-3k....

Another thing; the engine seems to 'bog' more than the old one did when opening the throttle wide quickly to 'blip' it...

now are these symptoms just a result of the reduced back-pressure from the exhaust (2 straight-through boxes and a 2-1 winpipe)? Or could the symptoms be tps-related?

Anyways, enough whittering, video:




As always, any ideas much appreciated.