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Tuning & Engine Management 4G63 EPROMS, ECU, MAF, knock, EGT, wideband, datalogging, fuel trims, etc. Read this Forum's Strict Guidelines.

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Old 11-04-2009, 08:35 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #1 (permalink)
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advancing the timing??

from what i was told the timing should be at 5* btdc would it hurt anything if i were to do it at like 8* or so?
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Old 11-04-2009, 08:52 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #2 (permalink)
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IT probably wont benefit you unless your running race gas.
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Old 11-04-2009, 08:55 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #3 (permalink)
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You'll also probably encounter knock easier/sooner.


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Old 11-04-2009, 08:58 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #4 (permalink)
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thats all i needed to know thanks, what is actual timing? is it 5*?
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Old 11-04-2009, 09:02 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #5 (permalink)
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Quote:
Originally Posted by lzertrbo View Post
thats all i needed to know thanks, what is actual timing? is it 5*?
No, that's just so you can sync the mechanical with the electrical. When you ground the check timing connector the ECU locks it's timing advance to 5* BTDC so you can adjust the CAS so it matches the engine.

During operation the timing advance comes from the ECU maps and depends on load and RPM.
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Old 11-04-2009, 10:03 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #6 (permalink)
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now i am confused again, dont i just time it like its an old chevy with a timing gun and moving the cas to set the timing
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Old 11-04-2009, 10:10 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #7 (permalink)
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Engine Timing


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Old 11-05-2009, 10:55 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #8 (permalink)
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Quote:
Originally Posted by lzertrbo View Post
now i am confused again, dont i just time it like its an old chevy with a timing gun and moving the cas to set the timing
No reason to be confused. The link posted explains it and the process is no different than what your used to.
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Old 11-08-2009, 06:48 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #9 (permalink)
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From: spanish fork, Utah
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can i just put my old one on and mark it
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Old 11-08-2009, 06:57 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #10 (permalink)
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Not really. That will get you close though.


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Old 11-08-2009, 07:10 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #11 (permalink)
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can i just put my old one on and mark it
How do you know the current one is correct?
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Old 11-08-2009, 07:30 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #12 (permalink)
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From: spanish fork, Utah
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the old one that was on it was fine and in the right place cause the car ran fine
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Old 11-15-2009, 11:00 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #13 (permalink)
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Originally Posted by lzertrbo View Post
the old one that was on it was fine and in the right place cause the car ran fine
o wow.....


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Old 11-15-2009, 11:45 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #14 (permalink)
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You really should check it so you know for sure. The timing can be off quite a bit and still "run fine" so be very careful. Try not to ever take shortcuts with these cars, trust me, it will bite you in the ass.


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Old 11-16-2009, 06:12 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #15 (permalink)
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From: spanish fork, Utah
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i dont plan on it. basically i am just asking questions so when someone asks me i can tell him why not to do that stuff ya know.
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