2.0L LNF Performance Tech 260hp and 260 lb-ft of torque Turbocharged tuner version.

One last problem on the rebuild

Old 05-28-2019, 10:06 PM
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One last problem on the rebuild

I recently put new pistons in ďwiseco forgedĒ and got everything put together she runs great just canít for the life of me figure out this pcv system been all over the forums I tried to make it close to stock as possible but she runs really ruff when I actually connect the pcv valve to the intake piping where it normally goes and add this piece I made to have the 2nd port installed for the vacuum puller side the car runs like ****, when I keep it like in the picture how itís hooked up now she runs fine but tosses the Maf code, i didnít want to weld in a fitting without testing on a silicone tube first, anyone got any ideas to help make her run better with the pcv system hooked up correctly, anything helps. Also car has a precision turbo 58mm and was tuned in this set up a long time ago. I am trying to set up a new tune but want to fix this last thing before I set an appointment. I donít know if the two lines were too close together or if the vacuum line needs to be closer to the turbo, but I donít want to weld or destroy any piping unless itís going to work correctly, I understand how the system works at least I thought I did ďair goes in the pcv valve down to the crank and sucked out through the top back into the intakeĒ I might be wrong but thatís what it looked like when the head was off..


This is how I have it connected now with the port on the valve cover going directly into the normal pcv connection line.

This is the piece I made where I installed the port in the first picture too then put the pcv valve onto its original port. It was jb welded before I destroyed it taking off the hose.

when I leave the pcv valve just unplugged car runs great minus the maf code that pops up...
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Old 05-28-2019, 11:52 PM
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Think I found the issue

#1 looks broken guess Iím pulling the intake manifold
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Old 05-29-2019, 01:34 PM
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Big turbo pcv system. You came to the right place. Now. Did you put the line from the port closest to intake on valve cover as close to the turbo inlet as possible? In the coupler? Is that what I'm seeing here? What did u do with intake manifold circuit ? Left stock?
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Old 05-29-2019, 04:33 PM
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Originally Posted by tomj77 View Post
Big turbo pcv system. You came to the right place. Now. Did you put the line from the port closest to intake on valve cover as close to the turbo inlet as possible? In the coupler? Is that what I'm seeing here? What did u do with intake manifold circuit ? Left stock?
I didnít want to weld in a nipple on the pipe close to the turbo so I made that silicone tube and it was installed right there in the pic. Also left it stock. I can place it closer to the turbo but would require welding and if the port closest to the intake need to be closer to the turbo I can try that after I replace the intake manifold pcv valve
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Old 05-29-2019, 05:30 PM
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Originally Posted by Dylan_09ss View Post
I didnít want to weld in a nipple on the pipe close to the turbo so I made that silicone tube and it was installed right there in the pic. Also left it stock. I can place it closer to the turbo but would require welding and if the port closest to the intake need to be closer to the turbo I can try that after I replace the intake manifold pcv valve
The intake port is fresh air. That should be closer to air filter. The other one , just get as close to turbo as possible , thats where u get vac for pcv system under boost. Did u clear ur maf code?
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Old 05-29-2019, 06:02 PM
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Originally Posted by tomj77 View Post
The intake port is fresh air. That should be closer to air filter. The other one , just get as close to turbo as possible , thats where u get vac for pcv system under boost. Did u clear ur maf code?
Yeah I had it set up like that but it was only about 6inches apart from the normal port and I cleared the code started her up drove around the block and she was idling really bad and sounded horrible so I parked her n took it off, this weekend Iíll try and put it closer to the turbo instead of the flange there..
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Old 05-29-2019, 06:18 PM
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That shouldn't really make it idle bad though. Have you tuned for maf relocate or didn't you relocate it?
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Old 05-29-2019, 06:20 PM
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Originally Posted by tomj77 View Post

That shouldn't really make it idle bad though. Have you tuned for maf relocate or didn't you relocate it?
maf is in original spot and was tuned in this setup before I replaced the pistons.
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Old 05-29-2019, 06:35 PM
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Originally Posted by tomj77 View Post

That shouldn't really make it idle bad though. Have you tuned for maf relocate or didn't you relocate it?
Im going to replace the intake manifold pcv and I bought a mishimoto flange with a bung for the vacuum and clear all codes and drive her around again, most likely on Friday or Saturday Iíll give an update, I have a oil catch can to set up once this is all fixed to route from valve cover to turbo but havenít set that up tell itís working correctly. Not trying to fk up my new valves too..

also might by my tune causing the issues because cause she was tuned with this system fucked up after I installed the turbo without the pcv air in connected. No codes until I put in forged pistons head valves springs n everything, I just didnt think a pcv system was so fkn critical on this car.. did my research and yet still here, Iíll take some videos if she still running ruff.
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Old 05-29-2019, 07:40 PM
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Originally Posted by Dylan_09ss View Post
Im going to replace the intake manifold pcv and I bought a mishimoto flange with a bung for the vacuum and clear all codes and drive her around again, most likely on Friday or Saturday Iíll give an update, I have a oil catch can to set up once this is all fixed to route from valve cover to turbo but havenít set that up tell itís working correctly. Not trying to fk up my new valves too..

also might by my tune causing the issues because cause she was tuned with this system fucked up after I installed the turbo without the pcv air in connected. No codes until I put in forged pistons head valves springs n everything, I just didnt think a pcv system was so fkn critical on this car.. did my research and yet still here, Iíll take some videos if she still running ruff.

if you don't wanna screw up ur valves with gunk, you will have too do a catch can on the manifold pcv as well. that's where most of the oil gets on the valves from.
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Old 05-29-2019, 08:09 PM
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Originally Posted by tomj77 View Post
if you don't wanna screw up ur valves with gunk, you will have too do a catch can on the manifold pcv as well. that's where most of the oil gets on the valves from.
Iíll look into it thanks.
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Old 06-01-2019, 10:21 PM
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Its running good now, no codes no smoke, thanks for the help tomj77
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Old 06-11-2019, 08:11 AM
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Tom, seems I recall you posting something on the manifold catch can. Do you still have that pic?
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