Richardsu Posted January 16, 2016 Share Posted January 16, 2016 (edited) hi, all I have a 1993 stock TT auto and its playing up alittle so any help would be great. when i drive at 70-80 mph on the motorway and then put my foot down the speed gos up to about 90/100, {without turbo} but very slow and strugle to move the rpm at all but if i take my foot off and put it back down turbo seem to come on and all works again. This only is going on at 70/80mph point. I tested the car for 20mph start with foot down to 130mph and the turbos / power works as it should. Any ideas thanks Edited January 16, 2016 by Richardsu (see edit history) Quote Link to comment Share on other sites More sharing options...
mellonman Posted January 17, 2016 Share Posted January 17, 2016 Sounds like a sticky vsv have a read of this mate http://www.mkiv.co.uk/vbb/showthread.php?35926-The-sequential-system Quote Link to comment Share on other sites More sharing options...
Richardsu Posted January 17, 2016 Author Share Posted January 17, 2016 Just replaced all pipes and the wastegate VSV valve and the EGCV VSV valve, just waiting for the IACV VSV valve and EBV VSV valve to come Best to replace it all as the car is getting old now i just hope this will do the job. thanks mellon good bit of info there. Quote Link to comment Share on other sites More sharing options...
Richardsu Posted January 19, 2016 Author Share Posted January 19, 2016 All working as it should now after a good look, it was the IACV and EBV valve pipes that was not working as it should. Was a great day and i love learning more about supra's Quote Link to comment Share on other sites More sharing options...
mellonman Posted January 19, 2016 Share Posted January 19, 2016 glad its all sorted mate happy motoring you will be even more happy once you click on bpu all will be reviled best setup for a supra for next to nothing you would not regret it Quote Link to comment Share on other sites More sharing options...
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