Second Set of Eyes | 2006 GTO tune/log review

[MTGOAT]

If anyone is willing to spend a few minuets to review my tune and log to make sure I am not doing anything dangerous, I would appreciate it.

I am running the goat at the Holden Extravaganza this weekend. I think I need to run under 10.99 and my best time was 12.1 @122mph. 2 seconds of that run was me sitting at the light because I am a dummy

thoughts, concerns, suggestions?

• 6.0L LS2
• Cam 228/234 .613/.613 112LSA
• Blower TVS1900 with over driven Cogs
• 4+ inch intake with ls7 MAF
• 102mm Throttle body
• 58lbs injectors
• stock 243 head
• upgraded in tank pump with secondary external fuel pump that comes on at 5psi

Thank you for the support,
-Butch

[Alvin]

I didn't see where you got on it all the way but what you showed looked lean and with very low timing for the amount of boost.

I'm sorry I don't want to beat you up on it... but it doesn't look great.

[STAGEUP]

These is no WOT in the log, get a new log with WOT.

VE table looks funky. Lots of timing at WOT for what I assume is pump gas. As mentioned above, very low timing in the cruise areas. Your headers must be close to glowing red. Not sure why you upgraded to an LS7 MAF, if your tune is Speed density, but whatever.

[MTGOAT]

the LS7 MAF came with the intake. wasn't actually using the MAF or at least I don't think I am. I had someone local tune this years ago and it never felt 100%. I recently got the car out of storage after about 5 years of not driving it. put probably 500 miles on it in the past month or two. The VE Boost table has me scratching my head with the transition between 2800 and 3800rpm. I took row 105 from the primary VE table and pasted it into the Boost VE because those did not previously match. Yes, the under hood temps are a bit crazy. can feel the heat pouring from under the car in through the windows...

I can try to get a WOT pull. I am running 93.

appreciate the feedback.

[MTGOAT]

WOT log attached

thank you

[Alvin]

The final timing is very low.. 7-12 degrees at 135kPa Especially for the boost. Its because of IAT compensation is taking out too much.

I'd have this retuned to be honest. The work is messy.

[MTGOAT]

that was sort of the plan but it didn't happen before this weekend. The ambient air keeps showing very low temps. It is 80* and muggy not 55* out...

thanks for your time and for confirming a few things for me.

[STAGEUP]

The final timing is very low.. 7-12 degrees at 135kPa Especially for the boost. Its because of IAT compensation is taking out too much.

I'd have this retuned to be honest. The work is messy.

Presciscley. The high octane timing tabling is a bit much for my tate on 93, but then you also have the IAT table pulling timing aggressively. I don't agree with this because when it gets cold out (Dense air), all that timing from the main high octane table will get shoved back in, and we all know what can happen at that point.

[edcmat-l1]

HO timing table has a strange low load area where the timing is only 10 degrees.

Boost VE table is interesting.

[STAGEUP]

HO timing table has a strange low load area where the timing is only 10 degrees.

Boost VE table is interesting.

I have a feeling the "tooner" was trying to dumb down any "bucking" at cruising speeds. Not a good way to eliminate bucking as EGTs will sky rocket with this method.

[2xLS1]

If anyone is willing to spend a few minuets to review my tune and log to make sure I am not doing anything dangerous, I would appreciate it.

I am running the goat at the Holden Extravaganza this weekend. I think I need to run under 10.99 and my best time was 12.1 @122mph. 2 seconds of that run was me sitting at the light because I am a dummy

thoughts, concerns, suggestions?

• 6.0L LS2
• Cam 228/234 .613/.613 112LSA
• Blower TVS1900 with over driven Cogs
• 4+ inch intake with ls7 MAF
• 102mm Throttle body
• 58lbs injectors
• stock 243 head
• upgraded in tank pump with secondary external fuel pump that comes on at 5psi

Thank you for the support,
-Butch

If you just sat there without breaking the beams then you would not have run 2 seconds quicker. Just saying. Timing doesn't start until you break the beams. Reaction time only effects who gets to the finish line first.

[edcmat-l1]

I have a feeling the "tooner" was trying to dumb down any "bucking" at cruising speeds. Not a good way to eliminate bucking as EGTs will sky rocket with this method.

I thought about that when I saw it, but it's from 1600 to 3800 RPM. If you have bucking in that range you got something else all boogered up.

[edcmat-l1]

If you just sat there without breaking the beams then you would not have run 2 seconds quicker. Just saying. Timing doesn't start until you break the beams. Reaction time only effects who gets to the finish line first.

I read that and thought the same thing but just let it go. By his math it should have run a 10.1 @ 122 LOL That don't jive.

[Alvin]

I have a feeling the "tooner" was trying to dumb down any "bucking" at cruising speeds. Not a good way to eliminate bucking as EGTs will sky rocket with this method.

or he wanted those bing bang boom decels. lol

[MTGOAT]

thanks again for the inputs. as for the racing part that was my first time and that was 8 years ago or something. I have no idea what to expect with the car right now.

I will do some research based on everyone's feedback and see where it goes.

[gtstorey]

or he wanted those bing bang boom decels. lol

"I have been playing with off throttle timing by lowering it in an attempt to get a mean burble from the exhaust on deceleration or coasting"
https://forum.hptuners.com/showthrea...hrottle-timing

[Lakegoat]

Your ETC Scalar is for a stock throttle body.
It would be almost impossible to run less than 10.99 in your LS2 GTO using 93 octane and 58# injectors, a 6 speed and whatever boost you have. I would to hate to hear that the motor blew up. I am an ex GTO owner. Get the tune cleaned up. Those stock pistons break ring lands really easy.

[edcmat-l1]

"I have been playing with off throttle timing by lowering it in an attempt to get a mean burble from the exhaust on deceleration or coasting"
https://forum.hptuners.com/showthrea...hrottle-timing

That makes sense.

[edcmat-l1]

Your ETC Scalar is for a stock throttle body.
It would be almost impossible to run less than 10.99 in your LS2 GTO using 93 octane and 58# injectors, a 6 speed and whatever boost you have. I would to hate to hear that the motor blew up. I am an ex GTO owner. Get the tune cleaned up. Those stock pistons break ring lands really easy.

It's possible with that setup although the injectors would be the limiting factor, and boost level of course. I've made over 700 wheel HP on one of those 6.0 GTOs back in the day, stock bottom end. To pull off a sub 11 second run with a manual everything has to be right including the driver.

[MTGOAT]

specific to the run times; the only reason I say I need to run better than a 10.99 is because I will not qualify for the Street Class with my 315 drag radials so the Pro Street class starts at 10.99. Or maybe they won't notice... Racing aside, we get a few hours for fun passes and then qualifying so if I don't qualify I still get to make a few passes.

I have someone giving me a hand with this. I will post an updated log tomorrow if the weather holds out and if anyone is interested.

Thanks again for the help.