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<blockquote data-quote="2fst4urtrk" data-source="post: 16492526" data-attributes="member: 42510"><p>Whats up everyone, need some help taking out an issue I'm having.</p><p></p><p>cg hot side, dual 39mm wastegates, spring pressure 2psi (i have tried 9.5psi springs and 15.5psi), car always spike to 20psi. top of wastegate venting to atmosphere, pt7675 turbo, 4in down pipe bumper dumper. Boost lines from turbo to T which goes to bottoms of wastegates with push lock fittings, and goes to boost solenoid, from solenoid to tops of wastegates.</p><p></p><p>when I do a pull in 4th I see spring pressure +2psi from 2000-5000rpm, after 5000 my boost will climb like crazy to 20psi.</p><p></p><p>with no wastegates opening i see 31.5psi (2000-6800rpm)</p><p></p><p>My tune is setup for 20psi, i just am trying to get my electric boost controller to do its job instead of letting my wastegates do all the work, so i can have a low boost safety.</p><p></p><p>My question, are my two 39mm wastegates only able to bleed 10psi from the turbo which is why i keep seeing 20psi? placement looks good but can be moved if completely necessary. Would rather not drop 800+ on larger wastegates but can be done.</p><p></p><p>[ATTACH=full]1663402[/ATTACH][ATTACH=full]1663403[/ATTACH]</p><p></p><p>Sent from my SM-G930V using the <a href="http://r.tapatalk.com/byo?rid=92568" target="_blank">svtperformance.com mobile app</a></p></blockquote><p></p>
[QUOTE="2fst4urtrk, post: 16492526, member: 42510"] Whats up everyone, need some help taking out an issue I'm having. cg hot side, dual 39mm wastegates, spring pressure 2psi (i have tried 9.5psi springs and 15.5psi), car always spike to 20psi. top of wastegate venting to atmosphere, pt7675 turbo, 4in down pipe bumper dumper. Boost lines from turbo to T which goes to bottoms of wastegates with push lock fittings, and goes to boost solenoid, from solenoid to tops of wastegates. when I do a pull in 4th I see spring pressure +2psi from 2000-5000rpm, after 5000 my boost will climb like crazy to 20psi. with no wastegates opening i see 31.5psi (2000-6800rpm) My tune is setup for 20psi, i just am trying to get my electric boost controller to do its job instead of letting my wastegates do all the work, so i can have a low boost safety. My question, are my two 39mm wastegates only able to bleed 10psi from the turbo which is why i keep seeing 20psi? placement looks good but can be moved if completely necessary. Would rather not drop 800+ on larger wastegates but can be done. [ATTACH=full]1663402[/ATTACH][ATTACH=full]1663403[/ATTACH] Sent from my SM-G930V using the [URL=http://r.tapatalk.com/byo?rid=92568]svtperformance.com mobile app[/URL] [/QUOTE]
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