Wastegate on my CTSC?
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Joined: Mar 2008
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From: Morristown, NJ
Originally Posted by deathsled,Jun 7 2010, 11:26 AM
Lol whatever you do don't buy that VBC from HPF. $100? Lol it's a manual boost controller, aka $5 worth of parts. Find the cheapest MBC you can, it's the same thing.
Honestly what you need to do is unbolt that wastegate for a few moments, throw a pressure source on the vacuum/pressure nipple on it (like if you have a small air compressor or buddy with one) and find out at what PSI the wastegate cracks open. That will tell you if you have a 6psi spring, 8psi, etc.
Also, remember that a boost controller can only RAISE the boost from whatever your spring is, it cannot lower it. So definitely find out what spring your wastegate has already before dropping any money ($5 or $100) on a boost controller.
Honestly what you need to do is unbolt that wastegate for a few moments, throw a pressure source on the vacuum/pressure nipple on it (like if you have a small air compressor or buddy with one) and find out at what PSI the wastegate cracks open. That will tell you if you have a 6psi spring, 8psi, etc.
Also, remember that a boost controller can only RAISE the boost from whatever your spring is, it cannot lower it. So definitely find out what spring your wastegate has already before dropping any money ($5 or $100) on a boost controller.
Joined: Nov 2005
Posts: 944
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From: Midland
99SH did this. Search for his posts, but for the work involved to do this I'd argue it isn't worth it. For a similar amount of work, you can add meth/H2O injection, aem fail-safe and run 18 psi on the stock block.
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