Break up in the higher RPM's. Log Attached.

[DSMToretto]

Ive already looked through the forums but none of the recommended fixes have fixed my car so far. What is happening is around 5400 rpms it starts to almost break up or blow out spark and gets worse as i go higher. Ive replaced spark plus ( 7es @.20 and 8es @.20) each coil in my coil on plug spark tech set up (even tried stock coils),ignitor, maf, fuel, did it with both my safc and now my ecmlink v3. It has been going on for a while and i figured it would be tuning related but when a guy was tuning my car it continued so we stopped. Any ideas will be greatly appreciated! On the log and i had to use my computer so i could log it for you guys so i know the tps is off a little but even when its dead on it still does it. I thought it may be a misfire but its showing the air flow is consistent and the air fuel ratio isnt changing very much as it breaks up. I am probably missing something but ill answer all i can as you need. Thanks again!

 

[DSMToretto]

anyone?

 

[muddfisher85]

Are you running projected or non projected plugs? Try some br8es non projected plugs.

 

[renovatdkitchen]

Did you put your foot to the floor? If not, looks like your TPS is maladjusted. Just saying.

 

[DSMToretto]

I have the tps set now, it was off then cause I used another lab top to log it and it changed the tipssettings... it was doing this even previous to getting ecmlink but iI always figured it was a tuning problem so never thought about fixing it... and as far as projected plugs, I'm not sure what you mean but I've used both the 7es and 8es plugs... I've gone as far down .20 on the gap to make sure its not blowing out spark but I'll def try the brs!

 

[boost97gst]

Do a pull and shut the car off immediately. Even during the pull when its breaking up. Pull the plugs and see if one is particularly whiter than the rest. You may see an oddball out of the 4 and then i would be looking at cleaning the injectors.

Currently im in a spot. Havent had time to troubleshoot. Same weird break up but only in 3rd. Logging about 52lbs/min. Then again, my IDCs are nearing 100% so i think i got mine figured out.

Anyway let us know what the plugs read like. Rich, lean, just right.

 

[DSMToretto]

sounds like a plan. ill let you know asap!

 

[keltalon]

Ive already looked through the forums but none of the recommended fixes have fixed my car so far. What is happening is around 5400 rpms it starts to almost break up or blow out spark and gets worse as i go higher. Ive replaced spark plus ( 7es @.20 and 8es @.20) each coil in my coil on plug spark tech set up (even tried stock coils),ignitor, maf, fuel, did it with both my safc and now my ecmlink v3. It has been going on for a while and i figured it would be tuning related but when a guy was tuning my car it continued so we stopped. Any ideas will be greatly appreciated! On the log and i had to use my computer so i could log it for you guys so i know the tps is off a little but even when its dead on it still does it. I thought it may be a misfire but its showing the air flow is consistent and the air fuel ratio isnt changing very much as it breaks up. I am probably missing something but ill answer all i can as you need. Thanks again!

Need to go tighter on you plug gaps

 

[DSMToretto]

Hey guys, sorry its taken so long but i finally figured it out and it was some random shit
cyl 1s intake rocker arm seized and broke. Luckily logged into my oil galley so it didn't eat up anything... Weird thing was my plug never showed me running rich in that cyl nor my wideband... got some 3g lifters and new rocker arms and its pulling like champ... thanks for the ideas guys!