Can I use ATR to tune out this knock?

[Speedn3]

I'm am pretty computer savy but I have yet to grasp ATR.
What tables do I need to alter to address the knock and to get my AFR at 12:1 across the board.
Can someone get me started in the right direction?

Suggestions and comments are welcome.

Thanks

Stage1+SFv103 91 FMIC
ED FMIC
RP
Cobb SRI
Denso 22
Turbo inlet

[jahman]

Need more info.

What mods? What intercooler?

But from the info I have so far, I think your knock might be due to too much boost in combination with too high AFR, but its not that high so I wouldnt be concerned too much. If you add fuel you might be able to get rid of knock without touching boost.

But what boost you should be running at will depend on your mods.

First of all if your fuel trims are whack you might as well fix that first, but if theyre good then go to Fuel OL/WOT Commanded EQ (no knock) table and make it richer and see what happens. Also, make sure you're using standard units so all this will make sense to you. Go to edit --> configure options and make sure standard units is checked.

[Speedn3]

Got ~90 miles on the map. LTFT +/-3.4 at idle, +/-2.3 part throttle , 0 at WOT.

[jahman]

Yeah, go to Fuel OL/WOT (no knock) table and make it richer in the areas you're seeing knock. You're also seeing some pretty nasty boost. Looks like almost 23psi which is probably making your turbo a flame thrower causing knock.

I'd go to Throttle - Req Load - x gear (norm bat) and lower the load a little bit between 3500 and 4500 RPM.

[aaronc7]

what boost does that map call for?? honestly it looks like maybe youre just getting too much boost and thats why its knocking...probably getting hot in there and high EGTs with stock DP

[fjames]

What jumps out to me in those logs is how the WG climbs throughout each gear. It's desperately trying to maintain boost at high rpm. For me that would be a big warning sign in a daily driver.

People need to get it in their heads that the ots maps often have nothing to do with their names. There's no telling how much work was done and how much wasn't. The load targets in that map are straight across the board. My mods are the same as yours basically, and that map is acting exactly how I'd expect it to with the default load targets.

[dread]

I agree with others, lower load and add fuel, that is how I did it and my knock was much worse.

[Speedn3]

Originally Posted by aaronc7 what boost does that map call for?? honestly it looks like maybe youre just getting too much boost and thats why its knocking...probably getting hot in there and high EGTs with stock DP

20.1 tapering to ~19 by 6700

Does this look like I'm going in the right direction.
Right now I'm reading and trying to comprehend and making subtle changes and posting the changes. I am in no way comfortable right now with loading anything altered done by myself.

I have attached the changes to the AFR in the areas that are over 12:1.
Please take a look and let me know what you think.
BTW....how do I copy the changes to the cells and post them?

The first log is from the stage2 sf 91 v103 FMIC tune. The 2nd is the changes I made to the map.

[Speedn3]

Originally Posted by fjames What jumps out to me in those logs is how the WG climbs throughout each gear. It's desperately trying to maintain boost at high rpm. For me that would be a big warning sign in a daily driver. People need to get it in their heads that the ots maps often have nothing to do with their names. There's no telling how much work was done and how much wasn't. The load targets in that map are straight across the board. My mods are the same as yours basically, and that map is acting exactly how I'd expect it to with the default load targets.

Can you elaborate on this in laymans terms?

Thanks

[jahman]

Originally Posted by Speedn3 Can you elaborate on this in laymans terms? Thanks

It means your turbo is working its ass off to make boost. And having the wastegate wide open is a bad thing...apparently it can get stuck and it reduces its life.

[Speedn3]

Originally Posted by jahman It means your turbo is working its ass off to make boost. And having the wastegate wide open is a bad thing...apparently it can get stuck and it reduces its life.

thanks for the explaination. what do I need to do to address it?

[fjames]

Okay, it makes more sense now - you're on a S2 map, not S1 like you said in first post.

Those S2+ maps are mostly horrible over-boosters for me with a midpipe. One reason ots maps over-boost in my view is the midrange targets and throttle control are so aggressive. That gets the turbo really spinning early so that it's "primed" for the higher boost targets later.

Look around for the "smooth throttle" threads and grab that TRL table (both A&C.) That'll knock your midrange down some. Then go to your load tables and knock down 3rd and 4th gear about 5% from 2500 to 7000 (just select the entire range you want to change, hit "m" type ".95" and hit enter.) It's just a quick and dirty fix but it will get you in the ballpark so you can explore without blowing something up.

[Speedn3]

Originally Posted by fjames Okay, it makes more sense now - you're on a S2 map, not S1 like you said in first post. Those S2+ maps are mostly horrible over-boosters for me with a midpipe. One reason ots maps over-boost in my view is the midrange targets and throttle control are so aggressive. That gets the turbo really spinning early so that it's "primed" for the higher boost targets later. Look around for the "smooth throttle" threads and grab that TRL table (both A&C.) That'll knock your midrange down some. Then go to your load tables and knock down 3rd and 4th gear about 5% from 2500 to 7000 (just select the entire range you want to change, hit "m" type ".95" and hit enter.) It's just a quick and dirty fix but it will get you in the ballpark so you can explore without blowing something up.

Yes...that was a mistake on my part. I am presently running the stage2 map.
However, I am going to change back to stage 1 as my base map and alter the tune. I was experiencing overboost and cut with the stage 1 map and tp. I believe it will be easier for me to address those issues with ATR than making changes to a stage 2 map.
You have been a great help.
Thanks again!