Dealing with Phantom knock?

[s1ngletracker]

I'd like to tap into some of the more experienced members here...

Has anyone successfully eliminated phantom knock? I'm getting a good amount of it on my 1g. Its weird, one pull will be just fine, and literally the next pull will be riddled with knock and timing will get pulled.

A few things I've been told to check:
CAS
Replace turbo/exhaust manifold gaskets
install improved lifters
PCV Valve

I dont think I'm actually leaning out or anything, but at some point soon i'd like to get a wideband to make sure.

[s1ngletracker]

Oh yes, and I should say my 1g is bone stock, other than an MBC... but it 'knocks' even at stock boost levels. So while I'd like to know my AFR, I wouldnt actually be able to tune it.

[jrohner]

And your base timing is correct?

[s1ngletracker]

yep, 5* BTDC with the plug grounded.

[sleepydsm]

Have you modded the car in any other way, doing anything that might produce more vibrations or rattles?

[s1ngletracker]

Nope! I believe this to be a problem with the car since I got it.

Any ideas?

[s1ngletracker]

I'm starting to think this is a fueling issue (read: actual knock, not phantom)... the problem seems to be getting worse. The car just refuses to pull hard under boost. Occasionally it pulls fine, but it seems to be getting more and more rare, and only when its completely warm and has been running a while.

I'm starting to suspect my fuel pump, filter, injectors, etc. I might grab a dummy gauge and see if i'm really lean under boost.

[jhaan_dude]

give me a call ill help you trouble shoot i got a couple of ideas

[s1ngletracker]

I would, but I don't believe I have your phone number... Why not just share the ideas here?

[Shane@DBPerformance]

Just look at your O2 voltage in your datalogger. That's free and better than a narrowband O2 gauge.