Timtim668

Hey everyone,
as the title says I have a weird power issue. This is a 2005 evo 8 MR. The mods are as follows:
injen cold air intake
cobb 3 ECBS
JDC coil on plugs
cobb catless down pipe
tomei exhaust
walbro 255 fuel pump
Tomei arms 18g turbo
Megan racing header
car is pro tuned by Anthony berry
innovate afr gauge , oil pressure. And coolant temp

last month I replaced turbo and header. I had the car retuned for the modifications as well. Car ran great for a day or two. Then it was running very very lean and the engine and exhaust had a very loud note to it. Kinda sputtered on start up. It would run but had no power and no boost. Reflash the ecu and it would run top notch for an hr or so then go back to the no power can’t get up a hill deal. There is no CEL either
So far here are the things I’ve replaced :
New Omni 4 bar MAP sensor
New MAF
New fuel pump
checked the gap on all plugs
Checked all the injectors.
Went thru everything with a fine tooth comb looking for vacuum leaks. Nothing.
Somebody has to know what the hell is going on here!!!
thanks,
Tim

Timtim668

Nobody has any input on this??

schuhie

It goes back to normal after reflashing? That's pretty weird.
I would try and disconnect the battery after it enters this low power mode and see if after the battery is disconnected for like 15 minutes if it goes back to normal.

It doesn't make a lot of sense that reflashing "fixes" it for a bit.

ViciousLSD

iTrader: (2)

maybe its dual map and its defaulting to the other tune?

schuhie

That is a good thought! I don't do the dual maps thing so I always forget that's a possible issue. It would fit the symptoms well!