Tighten Greddy Wastegate? - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 03-10-2007, 03:45 AM   #21
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Originally Posted by greddymx5 View Post
Why is that??? my greddy set boost to 15 psi and drops back to 12.(stock dp,fm manual boost controller)
Do we need a larger wastegate can?? btw without boostcontroller it's @ a standart 6psi... Never messed with tightning the wastegate...
Well.. I did not touched my Wastegate on my stock Greddy kit, and look at my Dyno Sheets! I didn't get boost up to 0.2 bar= less than 3 psi!
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Old 03-12-2007, 05:18 PM   #22
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Can be normal. The greddy kit is set @ 4-5 psi from factory...
Normally the fuel system can supply enough for 6 psi. So you can tighten the arm (sometimes it rattles) You need to make it shorter and get a boost gauge (wideband is very nice, but also expencive) a a/f gauge can show if you are rich or not...but it can fool you (narrow band (oem) O2 sensor doesn't react good @ our wanted air/fuel ratio's.
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