Timing issue. Turbo C6

[Brandon8965]

I need to compare spark tables with something of similar mods or maybe someone could point me in the right direction.

My Car:
'08 C6 LS3
FIC 1000
KB BAP
TSP Boosted stage 3 cam
TR6 plugs gapped to .022
Rear mount s476
93 pump gas (Meth not activated yet until spark issue fixed)

NEW Speed Density.hpt

20049061_3258817551033_2122564530_o.jpg

[Lakegoat]

I hope you don't go out and run that at wot with 34 degrees of timing. I'm not the guy to tell you how to set your timing, but I have never seen a boosted stock block LS3 run that much timing.

[Brandon8965]

I hope you don't go out and run that at wot with 34 degrees of timing. I'm not the guy to tell you how to set your timing, but I have never seen a boosted stock block LS3 run that much timing.

This is what I need help with.. what is an avg time for a boosted car?

[rbooth]

How much boost? Stock short block? start low and work up as you start getting things dialed in. Low is relative to boost level but I would start around 10-12 on pump gas and work from there.

[Lakegoat]

Here is a tune from the repository for a 2009 Holden 6.2 turbo. Look at the timing table and take about 3 degrees out of the wot area to start (where it says 15 degrees) and smooth it out. If you are going to be driving it around a lot, make the low octane table about 4 degrees lower than the high table so if it knocks, this will pull some timing for you. Then post a log of what you did. Take it easy first as I have no idea what your fueling looks like.

[Brandon8965]

How much boost? Stock short block? start low and work up as you start getting things dialed in. Low is relative to boost level but I would start around 10-12 on pump gas and work from there.

I have a 10lb spring in the wastegate. I have an electronic controller but all its functions are turned off.

Yes it is the stock short block.

I will redo it all and start low.

[Brandon8965]

Here is a tune from the repository for a 2009 Holden 6.2 turbo. Look at the timing table and take about 3 degrees out of the wot area to start (where it says 15 degrees) and smooth it out. If you are going to be driving it around a lot, make the low octane table about 4 degrees lower than the high table so if it knocks, this will pull some timing for you. Then post a log of what you did. Take it easy first as I have no idea what your fueling looks like.

Awesome! I'll report back shortly.

[Brandon8965]

Here is the log just going through 2nd, 3rd and the beginning of 4th after putting those spark tables in and taking 3* out of the top of the table

log after holden spark table.hpl

HO spark table after holden turbo corrections.jpg

LO spark table after holden corrections.jpg

[Lakegoat]

What's going on with your o2 sensors?

[Brandon8965]

What's going on with your o2 sensors?

I think one is fried.. well the plug is.. i was under the understanding that they didn't do a whole lot anymore?

[Lakegoat]

They make the part throttle fueling a lot smoother. If you street drive this, they need to be fixed. A lot of guys turn off the rear o2's but not the fronts.

[Brandon8965]

They make the part throttle fueling a lot smoother. If you street drive this, they need to be fixed. A lot of guys turn off the rear o2's but not the fronts.

I gotcha. i think i have a spare in the garage somewhere.. but you think spark and fueling is alright to make some wot pulls. I usually get this shutter under boost after about 3psi.

[Lakegoat]

Wait until some of the more experienced tuners check out your tune.

[Brandon8965]

Sounds good

[GHuggins]

Do as Lakegoat said and fix your O2's. Your VE table needs work - leaning out pretty bad during tip in and other areas. The spark table from the repository has the air model scaled differently which is why it nose dives in the lower airmass areas, so don't just copy and paste it. You don't want to start with much over 10 degrees - make sure the lower octane table is lower then you'll probably wind up around 14 or 15 when done on 93...

Might want to open your plug gaps up to .028" or .032" too - will help ignite better...

[SultanHassanMasTuning]

your VE is just not right at all as mentioned, please find attached timing map its based for a Centri setup but at least you get the idea.

NEW Speed Density_timing.hpt