nekdut Posted August 8, 2011 Share Posted August 8, 2011 Okay, so I didn't pass, but I didn't actually fail. The tech was unable to hold my revs steady at 2500rpm. It wandered from 2400-2600 and the machine aborted the test. The guy said it might be a vacuum leak somewhere but he wasn't sure. Idle and drivability is fine, but I did swap out the AEM CAI for the stock box just before the test to pass visual (which I did). Any ideas on where I should start with this? I'm fairly modified (JDM twinscroll) but catted, and I passed visual. Why am I having trouble holding revs? Link to comment Share on other sites More sharing options...
m sprank Posted August 11, 2011 Share Posted August 11, 2011 vacuum leak? Link to comment Share on other sites More sharing options...
fat_boy05 Posted August 11, 2011 Share Posted August 11, 2011 mine did the same thing but the car is all stock. all i did was take it to a differrent smog shop and it passed w/ no problem holding the rev. Link to comment Share on other sites More sharing options...
nekdut Posted August 15, 2011 Author Share Posted August 15, 2011 Can I get some suggestions on how to track down this potential vacuum leak? Link to comment Share on other sites More sharing options...
Kaos22B Posted August 16, 2011 Share Posted August 16, 2011 I haven't seen one DBW Subaru that was "easy" to hold rock solid that rpm, it just takes a little finesse to keep it in range that's all. It doesn't necessarily mean you have a leak. Link to comment Share on other sites More sharing options...
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