OUT WITH THE OLD VW. IN WITH THE SUBARU

[dsrace]

i am not why your pcm does what it does unless its sensing misfires or dead plugs and defaulting. ,???

[dsrace]

or the plug is damaged enough that at 3800 it doesnt through a hot enough or any spark and\or boost is blowing it out. easy test is fresh plugs gapped at 25 or your liking.

[big dave]

or the plug is damaged enough that at 3800 it doesnt through a hot enough or any spark and\or boost is blowing it out. easy test is fresh plugs gapped at 25 or your liking.

I do agree I will be putting the new plugs in. set at .25. I just cant convene myself it could be that easy. 

[fabr]

Honestly,it can very well be that simple. BTDT.  Every once in a while I would have my dragster run fine and on next start up run like crap. New set or freshly bead blasted plugs and all would be fine instantly. Under higher than average cylinder pressures an engine can be very finicky about the least little thing.

Many ,many years ago I rebuilt a 400 Ford gas engine in an over the road tractor. Thing would run like a striped ass ape until you hooked a trailer up to it and it couldn't pull away from a stop without back firing and just plain falling on it's face. We screwed with that thing every possible,checked everything several times including plug gap. We just could not find out what the hell was going on. An older mechanic in the shop said to close the plug gap .010 tighter. VIOLA!!!! The SOB ran perfect and would continue to run perfect other than needing new tight gapped plugs about every 10K miles. Some engines are just picky ass bastards.

[DeepBusch69]

x2 on the copper NGK plugs - Outfront says:  ZFR6F-11  gapped to .025
What ECU are you running?  Can you access it see the data settings? 

[dsrace]

interesting read

http://www.yellowbullet.com/forum/showthread.php?t=348637

[big dave]

x2 on the copper NGK plugs - Outfront says:  ZFR6F-11  gapped to .025
What ECU are you running?  Can you access it see the data settings? 

It is a links atom system. i can see all data and make adjustment if need. but that is part of the mystery. no were in the config files, can i  found a limit set at 3800Rpm . plug are cheap. i ordered replacement to try them new out of the box. gaped to .25.  ngk r5671a-7  is what Cris at Wichita dyno put in. but hearing what outfront runs, i will get some of them coming as well.

[big dave]

interesting read

http://www.yellowbullet.com/forum/showthread.php?t=348637

good bit of info thanks for the link

[dsrace]

this is about ford 2.3 but still intersting about plugs.  stinger admin is the owner and very knowledgeable on the 2.3 engines.
http://stinger-performance.proboards.com/thread/2059

[dsrace]

is this where your ecu come from??  http://www.linkecu.com/products/plugin-ecus/subaru/

[big dave]

is this where your ecu come from??  http://www.linkecu.com/products/plugin-ecus/subaru/

well it came with the motor.  ha ha. but yes this is the vender. it is a older unit called the atom  . it is not the g4 plus. I have sent some running logged data. as well as my running program, to a venders to take a look at it. I have talked with the guy on line a lot, asking questions and he as been a great help. the time difference makes it a bit of a slow go . the  parts store in town, happen to have the plugs in stock that Outfront uses so I will give them a shot tonight.

[fabr]

Does it rev to 3800 nice and crisp and then start crapping out or does it run sluggish to 3800 and then just fall completely on its' face?

[big dave]

pic of ecu unit

[big dave]

Does it rev to 3800 nice and crisp and then start crapping out or does it run sluggish to 3800 and then just fall completely on its' face?

runs crisp then craps out at 3800rpm. and by craping out I mean. it cuts off like a line launch limit.

[fabr]

then it's 95% certain it's not the plugs. I'd still put in a new set though just to rule it out. From your original post I assume it does this driving and not just free revving?