kbond Posted May 12, 2012 Share Posted May 12, 2012 I've just bought a gt but there is a problem with the boost it has a tongs gt spec turbo and a 38mm tial external wastegate which I've been told has a 1bar spring in it, but is only boosting to 0.5? When you take the vacuum pipe between the wastegate and turbo off it boosts too much then and the boosts keeps cutting out? Could it be a boost leak somewhere or would it work if there was some sort of bleed valve in the vacuum pipe? All help is much appreciated! Quote Link to post Share on other sites
funny onion Posted May 13, 2012 Share Posted May 13, 2012 You need to t piece into the bottom boost signal on the wastegate and run a boost controller to the top port, then use the boost controller to achieve whatever boost pressure you want. Mine has a 1 bar spring but I only get 0.8bar, but my top port is open to atmosphere. You need to pre-load the spring using the top port via boost controller. Previous owner probay took it off Quote Link to post Share on other sites
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