Audidream Posted February 9, 2016 Share Posted February 9, 2016 I have a 99 quattro which has only done just over a hundred thousand miles, the car has a very annoying loss of power around 3000rpm through all gears, i seem to get the power back as quick as it goes, there is a dump valve on the car and i can hear the pressure release at the very point (3000) then feel the power back right away??? scratching my head with it. Also i recently had a new down pipe fitted and since this the new down pipe seems to rest on the crossmember causing a knock when changing gears and when the engine is started, thanks in advance :) Quote Link to comment Share on other sites More sharing options...
James Posted February 10, 2016 Share Posted February 10, 2016 Dump valves often don't work that well if the car isn't designed to have an atmospheric valve fitted... could be that causing it? Quote Link to comment Share on other sites More sharing options...
Audidream Posted February 10, 2016 Author Share Posted February 10, 2016 Yea I was thinking it could be that, the valve was on the car when I got it, not something I would choose to do so I'll be putting it back to original and hopefully it will solve the issue :) Quote Link to comment Share on other sites More sharing options...
James Posted February 11, 2016 Share Posted February 11, 2016 Let us know if it turns out to be the dump valve. Could be useful for other members to know if they were thinking of doing it! Quote Link to comment Share on other sites More sharing options...
Gops Posted August 14, 2016 Share Posted August 14, 2016 Old post but it sounds like the N249 dumping boost. Scan is required.. May well be n75 issues. 1 Quote Link to comment Share on other sites More sharing options...
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