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iTrader: (1)

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

dnkynrbk

iTrader: (34)

What is your timing NA

02 BLK WS6

iTrader: (11)

I'm going out on a limb here and assume stock timing (24*-25*). For a 75 to 100 shot I wouldn't pull any timing if it's still on stock timing.

1_fast_gto

iTrader: (1)

total timing advance is at 40 degrees from 3200 rpm to 6500 rpm.

1_fast_gto

iTrader: (1)

anyone else have any input?

Chris@NitroDaves

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....

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iTrader: (1)

thanks, yeah it may not need it but it sure does run stronger with all of that timing.

Chris@NitroDaves

I'd at least pull the timing back down to around the 26* mark for spraying. I couldn't tell you how it would react at anything over 30* of timing.

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iTrader: (1)

ok thank you. do you have a bin file i can look at? or could i send you mine so you can see what im talking about?

Gary Z

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.

02 BLK WS6

iTrader: (11)

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?

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iTrader: (1)

did you not read the OP? its a stock camshaft

1_fast_gto

iTrader: (1)

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

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iTrader: (1)

ok all that timing isnt at WOT, i was looking at it wron thanks guys

02 BLK WS6

iTrader: (11)

^
Posts like this make me not want to offer advise. I read back through your posts and nowhere does it say anything about cam specs. I'll refrain from bashing and end this post on a good note.

Good luck!

99bowtieZ

Ok, I'll help. Your timing needs to align with the universe according to when you make your run. Say if you made your run at 3:27, you definitely need more timing than you did at 3:05...

1_fast_gto

iTrader: (1)

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?

Chris@NitroDaves

I would have the car where it's running 26* of timing and that will fine on the 75hp shot.

99bowtieZ

Anytime partner