High knock super rich afr

[ciezczak1]

i did a wot log got 4.64 degrees of knock and have been getting 8.8 afr i wanna say its the injector seals or something
Second opinions?

[himurax13]

Originally Posted by ciezczak1 i did a wot log got 4.64 degrees of knock and have been getting 8.8 afr i wanna say its the injector seals or something Second opinions?

Umm maybe post the log so we can look? The afr of 8.8 is probably due to the knock detected and the ecu shit more fuel in.

Sent via blown passenger side speakers.

[ciezczak1]

Originally Posted by himurax13 Umm maybe post the log so we can look? The afr of 8.8 is probably due to the knock detected and the ecu shit more fuel in. Sent via blown passenger side speakers.

Alright will post one soon

[Dano]

yes logs or it didn't happen...just lick pics

[ciezczak1]

here is a log i just did and i also forgot to mention that i also have a rich idle and part throttle is becomes rich as well. and random over boost. ill post up another one.

datalog1.csv

[Lex]

I am assuming this car is tuned from the mod list? 8.8 sounds very rich for any tune even under KR. Post a log.

[Dano]

with that speed I am going to immediately assume you are losing traction and rich AFR would be normal with DSC active.

even without DSC active SWAS will detect slight steering wheel movement and richen up afr to cut power.

do a 4th gear log.

edit: and yes even idle you are at 13AFR which is rich. LTFT is ~zero so I might assume this was a fresh flash on the ECU with STFT maxed at the amount of fuel it can pull.

your maf cal is waaaay off.

[Lex]

Originally Posted by ciezczak1 here is a log i just did and i also forgot to mention that i also have a rich idle and part throttle is becomes rich as well. and random over boost. ill post up another one.Attachment 119193

I think you should post all your mods. The boost and MAF levels don't have much sense.

EDIT: On top of this your HPFP pressure is dropping under boost (due to the excessive boost down low) and it looks like you are getting a cut as well.

I would not do any more logs before this is sorted out because on a stock block this is a clear recipe for venting it.

[ciezczak1]

Originally Posted by Dano with that speed I am going to immediately assume you are losing traction and rich AFR would be normal with DSC active. even without DSC active SWAS will detect slight steering wheel movement and richen up afr to cut power. do a 4th gear log.

speed6 bro and ill go do a 4th gear log

[Dano]

ok "bro" see my other post.

your maf cal is way off. ecu is pulling 25% fuel at idle.

and lex is right you are about to vent your block with 30psi @ 3500RPM

[Lex]

Originally Posted by ciezczak1 speed6 bro and ill go do a 4th gear log

Read what I said before it blows.

[Dano]

in before OPs next post is this.

Originally Posted by Lex I think you should post all your mods. The boost and MAF levels don't have much sense.

this would explain the uber rich AFR due to bad maf cal.

[ciezczak1]

alright need to update sig but mods are 3.5in intake, built block, stock turbo, 3 in catless exhaust, grimmspeed 3port boost controller, fmic, denso v24 spark plugs fp internals think thats all

[Dano]

whatever you do, do not go WOT again until your boost is under control...even on a built block.

from your logs you need a complete tune and I would get back to spring pressure only until the issues are resolved.

[ciezczak1]

Originally Posted by Dano whatever you do, do not go WOT again until your boost is under control...even on a built block. from your logs you need a complete tune and I would get back to spring pressure only until the issues are resolved.

alright thanks ill see if i do more maf cal it was the same map as before the built block and no problems and ill see if that will change anything.

[Lex]

Dano's correct, your boost control is probably setup incorrectly. The car needs a tune badly.

[Dano]

Originally Posted by ciezczak1 alright thanks ill see if i do more maf cal it was the same map as before the built block and no problems and ill see if that will change anything.

same intake on the old map? If I were to make a guess it looks like an incorrect multiplier was applied to a 2.75 maf curve to create the 3.5 and it was over scaled.

IIRC lex has a ton of multipliers posted for various intakes that you could start with or maybe it was just maps with starter maf cals.

I think (don't quote me) but for me going from OEM to 3.5 was a 1.65 multiplier for pump gas which got me real close.

Edit: you can quote me it was 1.67 with some tweaking at WOT

[ciezczak1]

Originally Posted by Dano same intake on the old map? If I were to make a guess it looks like an incorrect multiplier was applied to a 2.75 maf curve to create the 3.5 and it was over scaled. IIRC lex has a ton of multipliers posted for various intakes that you could start with or maybe it was just maps with starter maf cals. I think (don't quote me) but for me going from OEM to 3.5 was a 1.65 multiplier for pump gas which got me real close.

it was the same intake didnt do any tweaks before and after the build

[Mike@Stratified]

Did you have the 3-port before the build? Is it currently in 3-port mode? Was it before the build?

[ciezczak1]

Originally Posted by Mike@Stratified Did you have the 3-port before the build? Is it currently in 3-port mode? Was it before the build?

Yeah I did have it before the build and it is set in 2 port and the third as the bleeder

[Dano]

pull the power lead to your EBCS and carefully test by giving it some gas and monitoring boost. if its plumbed correctly you will hit around 10psi max IIRC on a K04 and you will know you are good to start tuning AFR and won't blow the motor up. if boost still skyrockets then you have a line off to the WGA or other plumbing issue.

if you are catless it might creep up at WOT as RPMs rise but shouldn't get out of control but its something to watch.