Let me start off by saying that I am not a tuner, just the owner of the car that has been taken to different shops and tuners over the last 2 years and nobody can figure out the issue. I am just asking for some help because the tuners can’t seem to fix it.
Car idles good, but on the dyno as you start to rev up around 3000 rpm’s everything looks good from a knock and timing point but as soon as you go to wot it pulls timing to -10* and stays there until you let off the gas.

List of mods:
Engine rebuilt with forged internals – rods and pistons
Balance shaft delete
Walbro fuel pump
FP evo 9 turbo, downpipe and exhaust
Upgraded intercooler piping
Tial BOV
1200cc injectors
Spooling up kit
Hallman bc
Wideband, boost and oil pressure gauge
coilovers

During the rebuild I had them replace the knock sensor, TPS. IAC and MAP sensor

Thanks in advance for your input.

 

do you have any logs?

 

NO, sorry, I am trying to get them from the tuner.

 

OK, I finally got some info from the tuner.
Attached is the evoscan log and some screenshots of the maps.

 

You are pegging the knock sensor. Either a very noisy engine or a knock sensor problem or the car is very lean. The mid fuel trim is at +10 to so your inj scalling is out and the car may be very lean under boost.

 

Thanks for your input. Going to check the torque on the sensor that was install by a shop. its just been frustrating after 1 year and 4 different tunes and no body can figure out why it knocks at 100% throttle but goes away as soon as you let off the gas. Any recommendations on plugs and plug gap?

 

Lets be honest with ourselves. This car has not been to multiple tuners. If you have, I wouldnt be going back to any of them.

 

Yes. Aside from the knock issue, the fuel trims alone tell you the car is not properly tuned.

 

OK, so lets be honest, it has been to multiple tuners and yes there is no way I'm going back. I did get the ROM sent to me and now have access to all the maps so if anyone has any questions or would like to see any of them let me know and I will post more pictures. Thanks for any type of help.