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want to uupgrade to 3.4 but need tuning help

well my plan was to get a wideband... yet i spent my budget for the fall and cant spend anymore... id really like to get the 3.4 on without the wideband... but if i really have to go buy a 3.6 i guess i will have to
 


You could go 3.4 without a wideband. But with the correct mods you're talking a 25% increase in power from stock. That needs to be accounted for and monitored in some way.
 
i understand... any other mods you would consider before going to a 3.4 that i dont have... most pretty much told me what i need to run a 3.4 and thats what i bought and is what i have right now
 
Untitled-3.png

That's what your high and low octane spark tables should look like before changing pullies. You want to go to engine-spark-advance to find that table.
 




matt5112 said:
Something to do. :D

timing.png


Car doesnt like 17* up top.

Stepping down to a 3.6 because it seems KR is there no matter what I do.
Click to expand...

I'd go to the 3.6 and see how it is when you retune it. Mine responded better with 19* on a 3.1" than 14* on a 2.9". What are your afr's at?
 
Timing M90 car > Smaller pulley M90 car...proven as the smaller pulley gives you more low end TQ. but the timing give you the top end...which these cars lack in the first place...

I just can't understand why your car doesn't allow more timing with only a 3.4" with a full-size IC and headers...
 


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