how bad SHOULD my engine be running?

[drewvdw]

Never heard of him or that shop.

He may be able to get you a somewhat safe tune...But I still wouldn't drive it with that intake. If you or someone you know has an aftermarket one like AEM or Cobb or any other known brand, you'd have better luck.

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[squarebush]

OK, just an update, I ended up trailer-ing the car to my tuner, and he base mapped it as best he could, and the car still will not run properly, but at least I have a safe tune on it for me to use while I am trying to figure out what else is wrong.

to check:
-New MAF housing
-front 02 sensor and connections
-injectors? i got them cheep off a guy on here, so he may have screwed me and sold me bad injectors
-fuel lines, not likely, but I might have routed the fuel wrong, this will take 5 seconds to check when I get home from work.

[99imprezd]

At least its running, Youre a step in the right direction. Prob has smthn to do with your MAF but.. If youre worried about the injectors, try seafoam($10 a can) in the gas, that stuff is my "go to" for any mystery fuel blockage issues... if that 's not doin it, send em off the Deatchwerks; http://www.deatschwerks.com/services...ector-services Sent my 565 STi pinks I got locally and 1 of 4 was pretty bad... these guys flow tested and cleaned/rebuilt all of them to spray in perfect harmony about 10% stronger than when I sent them for about $120. Good luck man..

[squarebush]

Originally Posted by 99imprezd

At least its running, Youre a step in the right direction. Prob has smthn to do with your MAF but.. If youre worried about the injectors, try seafoam($10 a can) in the gas, that stuff is my "go to" for any mystery fuel blockage issues... if that 's not doin it, send em off the Deatchwerks; http://www.deatschwerks.com/services...ector-services Sent my 565 STi pinks I got locally and 1 of 4 was pretty bad... these guys flow tested and cleaned/rebuilt all of them to spray in perfect harmony about 10% stronger than when I sent them for about $120. Good luck man..

thanks for the advice, seafoam is a good idea, but probably not a solution.

[99imprezd]

yeah.. but would eliminate any doubt that fuel is the issue..

[99imprezd]

did you ever re-route the evap sensor? When I ran my perrin turbo inlet, I modified my evap sensor to still plug in although it was removed from the oem inlet.. with it unplugged, it ran like total dog sh###t until I plugged it back in and reset the ecu!

[squarebush]

Originally Posted by 99imprezd

did you ever re-route the evap sensor? When I ran my perrin turbo inlet, I modified my evap sensor to still plug in although it was removed from the oem inlet.. with it unplugged, it ran like total dog sh###t until I plugged it back in and reset the ecu!

you mean the evap solenoid? that mounts to the front of the stock manifold? you just plugged it in and the car ran better? I may just be deleting the EVAP syspem, I dont have ports for it right now ob my turbo inlet/manifold.

this guy:

[99imprezd]

On front is a purge bypass valve and solenoid.. there is a sensor that comes off the block vent basically on the rear of the pass side block/manifold area in front of the turbo that on wrx models plugged into the turbo inlet.. with this unplugged my car would barely idle.. never tried running it with the purge bypass unplugged... although I imagine it would definitly screw up the vaccum to the manifold & intake system... heres a pic of what Im talking about..

[squarebush]

You mean this guy?


I dont think they started 'till 04, my 02 ECU isnt looking for that sensor.

[squarebush]

This is a great schematic of ALL the EVAP stuff under the hood. the only EVAP related sensor is mounted to the charcoal canister back by the gas tank. the only evap related stuff up front is a solenoid(#2) mounted to the front of the passenger side of the intake manifold, and a vacuum valve(#3) that floats(held in place by the 3 lines that run to it)

[squarebush]

Originally Posted by 99imprezd

On front is a purge bypass valve and solenoid.. there is a sensor that comes off the block vent basically on the rear of the pass side block/manifold area in front of the turbo that on wrx models plugged into the turbo inlet.. with this unplugged my car would barely idle.. never tried running it with the purge bypass unplugged... although I imagine it would definitly screw up the vaccum to the manifold & intake system... heres a pic of what Im talking about..

OK, yeah the 02s dont have that sensor yet.

[99imprezd]

yeah..there ya go.. ****.. im stumped.. startin to seem like a weird vaccuum issue though relating back to a bad idle. Did you use a new intake manifold gasket when you swapped it over the the new motor?

[squarebush]

Originally Posted by 99imprezd

yeah..there ya go.. ****.. im stumped.. startin to seem like a weird vaccuum issue though relating back to a bad idle. Did you use a new intake manifold gasket when you swapped it over the the new motor?

Yeah, I had a full new OEM gasket set. and I did boost leak check it (applied 20psi air from my compressor to the intake system) and it held the pressure fine. I'm thinking fuel, as I hacve cheep injectors, and routed the fuel lines myself. My tuner said that it was freaking out from rich to lean...

[99imprezd]

huh.. well keep us posted. my build is underway and avoiding all issues or troubleshooting in a few minutes is how I want this swap to go. I still vote seafoam it up!

[squarebush]

Ok, tested a few things before it got too cold.
Jerry rigged up a stock maf housing and am using a different maf
Checked injector plug order
Checked fuel pressure, 30psi give or take depending on where it is in the idle hunting.

Fuel pressure seems a bit low to me, could it be a bad fpr?

[hkprofection]

Originally Posted by 99imprezd

On front is a purge bypass valve and solenoid..

One of the nipples on this was broken completely off when I purchased my car. While it created a HORRIBLE vacuum leak it didn't effect it to run like you speak of. I can't remember the CEL it threw, put it was 'Loose Gas Cap".

Originally Posted by squarebush

This is a great schematic of ALL the EVAP stuff under the hood.

Thanks! I saved this schematic to my phone. I still have a small EVAP leak I need to find. Can't remember the exact CEL of that either haha.