timing
timing i have a 2004 gto with long tube headers, catless mids, stock catback, and a 75 wet shot, i also have hp tuners and am pretty good at navigating through it and changing things, my question is, how much total timing advance can i run without spark knock/ detonation/ blowing it up? not trying to be too conservative, just not trying to blow my intake off or anything crazy...any input is welcome, thanks
edit: also running ngk tr6 plugs
josh
edit: also running ngk tr6 plugs
josh
Last edited by 1_fast_gto; Jun 17, 2010 at 02:11 AM.
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First thing i would do is make a pull N/A and pull a couple of plugs and see where the timing mark is at on the strap and get that dialed in then worry about the nitorus timing.
I've professinally/ personnally never hurd nor seen any LS vehicle needing 40* of timing n/a....
I've professinally/ personnally never hurd nor seen any LS vehicle needing 40* of timing n/a....
First thing i would do is make a pull N/A and pull a couple of plugs and see where the timing mark is at on the strap and get that dialed in then worry about the nitorus timing.
I've professinally/ personnally never hurd nor seen any LS vehicle needing 40* of timing n/a....
I've professinally/ personnally never hurd nor seen any LS vehicle needing 40* of timing n/a....
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I seriously doubt your WOT timing is 40 degrees. My guess is that you are looking at the upper right corner of your timing table in HP Tuners Editor. The relevant numbers are in the lower right corner. You should see 23-26 degrees. But you can’t see the true timing with Edit. You need to use Scanner to see where your engine is actually operating. Next, you need to know that more is not better when it comes to spark advance. To not pull timing for a 75 or 100-shot is bad advice. Nitrous accelerates combustion which means you need less advance. You will make more power if you pull 3 - 4 degrees for a 75-shot. Good luck.
If your timing is 40* WOT, your tuner needs to be fired. I have fairly aggressive timing in my car 31* WOT n/a being cam only. I drop timing down to 20* for a 100 shot and 15* for a 200 shot.
What are your cam specs?
ok, i went and drove my car with my scanner on it and set the min max for the timing advance and it hit 38* during a WOT acceleration with no detination, no knock retard, no nitrous. anyone have any input
LOL thank you, i have learned the error of my ways, i was looking at the table backwards... sorry to those i offended, so what should i set my timing at for n20 pulls with a stock camshaft on a 75 shot? what would you think about timing modifications for an aftermarket camshaft. with specs like these .232 .240 .600 .605 109 + 4 and a 75 shot?
