My cammed commodore tune file , need some advices .

[Eng.LSX]

Hello ,

This is my first post in this awesome forum and I would like to know what do you guys think about my tune .

The engine keeps shut down in drive but idles good .

note: I commanded rich mixture to have a safe run but never run the car .


Thank you .

LS1 vz boltons_cam.tun

[BLK02WS6]

I'll take a look, but it would be best if you also posted a log of different driving conditions.

[turbo]

i only had a look at the spark timing but it seems to have a bloody lot, are you sure its right

[Eng.LSX]

I'll take a look, but it would be best if you also posted a log of different driving conditions.

Thanks , I'll post a log if I found a way to drive .

[Eng.LSX]

i only had a look at the spark timing but it seems to have a bloody lot, are you sure its right

Well it's kind of a lot but the car was running great with the previous setup .

[macca33]

What are the modifications? Spark does seem high(ish) in places, but not overly crazy for a cammed car.

[Eng.LSX]

What are the modifications? Spark does seem high(ish) in places, but not overly crazy for a cammed car.

Not sure about the mods , I bought it used and it was stock and the first owner told me it had boltons , he kept the tune file anyway .

[rally1]

The saprk does look a little high unless it has a cam, your Air Flow meter table also looks a long way out, can you post the tune you started with when the engine was running ok?

[joecar]

Trimming is disabled, Closed Loop is enabled (so it will go into CL but it won't trim)... is this expected...?

MAF is enabled, and MAF table has a kink.

Cat over temp protection is disabled (does the car not have cats...?)

EGR is disabled.

AIR pump is disabled (if it is not physically removed from the vehicle it will accumulate condensation).

HO and LO spark tables are identical (points to running MAF-less).


WOT 3->2 downshift speed is same as WOT 2->3 upshift speed, this might inhibit the WOT 2->3 upshift.

Throttle Kickdown 4->3 and 3->2 tables are not all 100%, this will interfere with the PT upshift/downshift tables.

[Eng.LSX]

The saprk does look a little high unless it has a cam, your Air Flow meter table also looks a long way out, can you post the tune you started with when the engine was running ok?

The car has a custom 4" MAF housing with the new card style MAF, maybe that's why . The previous tune is almost as same as the tune I’ve attached but without modifying the idle and PE command.

Thanks.