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Top 2GNT Technical Performance/Engine Engine Management Systems & Controllers topic #4116
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Subject: "Knock when shifting" Previous topic | Next topic
SilvrEclipsOct-08-08 04:26 PM
Member since Nov 27th 2007
534 posts,
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#4116, "Knock when shifting"


          

Just installed my 16g and started tuning some. Boost is set to 17psi and got the AF to the low 11s. Timing is pretty low with everything in boost set to 12*. Using det cans to check for knock. When pulling 3rd all the way to 6k I get no knock at all but as soon as I hit 4th I got a little bit of knock for a sec or so. Looked at my log and when I shifted timing went to 32* or whatever its set at for that part of the map and then it took a sec to get back down to 12* which is when the knock went away. How do you guys get rid of the knock when shifting? As far as I can see its going to see alot of timing when letting off the throttle to shift and get a little bit of knock before timing drops again.

98 Eclipse GS Turbo
Built motor - MS2 - Holset hy35 - Zoom Stg 4 Clutch - 57.5mm TB - ARP Headstuds - Turbonetics wastegate - 3" Turbo back - FMIC - Greddy RZ BOV - Walbro 255 - 650cc Injectors - Fidanza Flywheel - Cobra calipers w/ 13" Rotors - Oil Cooler - DevilsOwn meth injection

1981 Chevy Scottsdale
1987 Nissan 300zx - Chump Car
2001 BMW 325i

  

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Knock when shifting [View all] , SilvrEclips, Oct-08-08 04:26 PM
  RE: Knock when shifting, justins71, Oct-09-08 04:10 AM, #1
RE: Knock when shifting, SilvrEclips, Oct-09-08 05:28 AM, #2
      RE: Knock when shifting, SilvrEclips, Oct-10-08 06:32 PM, #3

Top 2GNT Technical Performance/Engine Engine Management Systems & Controllers topic #4116 Previous topic | Next topic
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