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Old 09-26-2007, 05:09 PM   #1
bonestockrex
Scooby Newbie
 
Member#: 150410
Join Date: Jun 2007
Chapter/Region: Tri-State
Location: Staten Island, Ny
Vehicle:
2006 it was a Wrx
steel greay metallic

Default help!!!

I put a post up a few months ago about a problem ive been having. So i guess ill start over and tell it again maybe somone can shed some light on whats going on. I have an 06 wrx tr. The motor blew the day after the car was tuned back in march. The night the car was tuned on the way home from the dyno the car started running ****ty, out of no where. i got the car back to a local shop where when i looked at the car something didnt seem right. the car was running pig rich, and when you dead reved the car it react almost like there was a monster vaccum leak. the rpms would bounce up and down until it eventually evened it self out and held an idle, but you colud smell the car was running rich and dumping fuel. the only difference between the when the car left and when it came home was that there was a dtec map sensor wired in so that the car would read the 26 psi that the car was tuned for. The next day in trying to identify the problem, i noticed that there seem to be a conflict between the stock map sensor and the dtec map sensor. The seemed to run better with the stock map sensor disconnected. while trying to make a logging pass to send to the tuner the motor detonated big time. blowing piston #3 to pieces and twisting a rod. since then oveer the pasat few months i have built a new motor and dropped it in. Guess what, That problem is still there. If the car is dead reved, when you let out the rpms will start to bounce up and down until the car eventuaslly stalls out. I am all out of ideas on what it could be the only DTC's im getting out of the ecu. is multiple misfires and vaccuum pump solenoids. I deleted the vaccum pumps becuase when i built the new motor i used jdm vesion 8 big port heads. below is a list of mods of how the car sat the day the motor blew and how the car sits now.

Then:
Stock ej255 long block
tdo5h 20g
moded sti pinks (flow tested at 900cc)
perrin inlet tube
sti tmic
smc alki kit
txs utec delta
txs dtec map
agency power headers
perrin upipe with tial 44mm wastgate
agency power down pipe
agency power catback exhaust

now:
Sti ej257 short block with wiseco forged pistons
jdm version 8 big port heads
tdo5h 20g
perron inlet tube
txs fmic
smc alki kit
PE 800cc top feed injectors
Agency power fuel rails
txs utec delta
agency power headers
perrin upipe with tial 44mm wastegate
invidia downpipe
agency power cat back exhaust

If anybody has any ideas please let me know!!!
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Old 09-27-2007, 06:10 PM   #2
bonestockrex
Scooby Newbie
 
Member#: 150410
Join Date: Jun 2007
Chapter/Region: Tri-State
Location: Staten Island, Ny
Vehicle:
2006 it was a Wrx
steel greay metallic

Default

bump I'm desperate!!!
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