so my brother-in-law's girlfriend picked up a 03 avalanche couple months ago from a dealer, from what she knows its been to Alaska couple times. well i started looking around under the hood, its definitely been modified at one point, battery bracket-cables look like its been moved then put back, tb spacer injector saftey clips are missing, and much more. so i wanted to look at the computer, its been modified, speed limiter removed, ve table messed with, spark tables messed with, mulitipliers also.

what im asking for if anyone gets bored and wants to take a look to let me know if this all looks good, im new to tuning and know enough to get me in trouble but not enough to know just by looking at the file- not enough time doing tuning to know better

thanks in advance hope this attachment works

 

It has been modified. I found fueling was leaned out, spark added, shift firmness raised, and shift points raised. All basic performance tune mods from my quick look.

If you want to see what has been changed, compare it to the attached file...

 

Tune's been modified and modified by someone that had no clue what they were doing! That VE table looks like total

 

That is a stock VE table...

 

Yes it is, thank you for correcting me. That's my bad I use hptuners as my primary tuning tool. The spark and airflow tables are inverse of each other compared to efi live so I initially was looking at the ve table thru "hptuners eyes" in which case yes it would had look jacked up.

 

Thanks for the replies! So that being spark added and fuel being leaned out is this why this person changed i iat/ect multipliers lowered? Would you say it's definitely a rookie tune? Or a hacked up drive tune or driveway tune lol.

She has been having better luck with this thing- than her last vehicle (Honda) I talked her into this full-size not knowing all this has been done- I hate to see her spin it high rpm and grenade this thing due to someone's hack tune.

Thanks for the link to look over stock!!!

 

The best thing to do would be go for a drive logging default metric pids - do one WOT pull and some normal driving and post the log up. I'll take a look at it. I didn't have time to go through table by table, but what I saw didn't look bad. Along the lines of a canned or mail order tune - not done from the ground up with a wideband the way I would do it.

 

Awesome thanks a lot! I think ill be seeing them this weekend and hook it up to check. Any important pids to select you would like to see?

Knock
Spark adv. cyc 1
Lt fuel trims
Maf freq
Iat
Ect
Rpm
Tps
Vss
Injector duty cycle?
Map-kpa
Command afr?

I feel like I'm missing some things

 

Those are good, except add injector base pulse width.