TBSS timing problems
 

so I'm a tunign noob... but I can't figure out what is causing this thing to pull so much timing WOT.

Full disclosure this is not a TBSS, its a 2008 saab 9-7x that originally came with the 5.3. It blew a rod bearing and I replaced it with a L96. I put a 2003 Z06 cam in it to eliminate the VVT, and it has a 3000 RPM 287mm converter in it.

I matched all the fueling tabled to the injectors that came in the L96, and just as a base tune I matched airflow to a stock TBSS with the LS2.

I have played with the timing tables, and I think this thing should take a ton more timing than a stock LS2 even running on 87 octane. I am getting some KR at weird spots, but the real issue here si that thje thing just pulls a shitload of timing and I have NO IDEA WHY.

Can you guys take a look at the tune file and this log and tell me what you see?

Damn it the files are too big...

:rage:

If you guys think you can help I will email you the files.

Always tune VE and MAF before spark tables. Detonation is bad for your engine.

Detonation is not the reason its pulling timing though... if anything its running a little rich

08 has the wonderful virtual VE.

Host the files on Mediafire .

never used mediafire... ill try that now.

I gotta restart my comp... not doing that now.

No one wants to take a stab at it, huh? lol

Seriously, stop trying to sort out your timing table until you tune the fueling etc. It's dangerous, and you're also chasing your tail.

Beyond that, you need to look at your wiring and all of your sensors. Make sure that everything is correct mechanically & electronically before you proceed. There are a thousand different things that can give you problems.

Roger, I have looked at his tune and logs. His fuel is pretty close, close enough it should not be a issue. I dont have anything other then the logs he sent me but its pulling a shit load of timing somewhere on a WO pull but once it hits part way through 2nd gear it stops pulling timing and settles in. Its weird, I have seen this before on that type PCM but I forget what was causing it. When it pulls the timing it is not showing under KR, how if its from Burst etc I dont know as I dont know what config he used. It gets the occasional hit of 1-2 degree KR but with his fueling being rich enough ( for intensive purposes, 880-890 02's) and timing nothing crazy I think the KR that it does show is false.