New Remnant Turbo Kit. Worked Fine for a Week, Now Acting as if I Have a Massive Boost Leak

[Tsuki8]

Downpipe does not utilize gasket as it has a V band clamp to turbo. I did undo it and redo it while inspecting turbo and that did not help.

#3 in the diagram is the stock gasket, alot of aftermarket downpipes use this gasket.
I don't think this is the issue, shouldn't be a dramatic difference.

Example:

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[Jazee]

I admit that I'm skeptical of the seal on the cold side because in the "not working" log, the car was asking for over 30 pounds of boost, but the pre-throttle pressure sensor was only reporting 16-20 pounds. A boost leak from improper installation of the cold side is the most likely answer, here.

That said, I think loosening the clamp on the center of the turbo and ensuring the hot/cold sides are snugly together is a good bet. That v-band at the center of the turbo should be 8ft-lbs/96in-lbs. Easy to do on the car.

There's actually a gasket in the downpipe, it's the flaky graphite ring that's recessed into the clamping area. Just wanted to make sure it was still there.

I will check that center V band. Unless the wastegate flap is physically broken inside the turbo, which I would consider unlikely, something like this has to be the problem.

I can’t say for 100% that the downpipe gasket is there but it should be. I never removed it, but it’s possible it could’ve fallen out. But that shouldn’t impact the turbo’s ability so significantly.

 

[Jazee]

Update.. Found the issue. Wastegate flap delete mod.

 

[Alec-RemnantPerformance]

Good job finding the issue @Jazee. Although it was different than I expected, the only thing that made sense was the wastegate.

That said, I’m sorry you experienced this issue! Not sure how this happened as I have 8,500 miles on my turbo and pushing 42psi daily while Keith of Extreme Boost Care has 22,000 miles on his pushing 38psi.

At any rate, I will be calling you later this morning to find out how you’d like to proceed with quickly resolving this issue!

 

[Deighvid]

Nice job finding the issue and also kinda hilarious.

 

[3literV8Eater]

Update.. Found the issue. Wastegate flap delete mod.

Did the downpipe catch the missing piece? Or is it further down in the muffler of the exhaust? Sheesh!!!

 

[Jazee]

Did the downpipe catch the missing piece? Or is it further down in the muffler of the exhaust? Sheesh!!!

Piece was nowhere to be found. Knocked the exhaust around and didn’t hear any rattling. But no cats or restrictions in exhaust so it probably shot out.

 

[Rocksandblues]

that is pretty crazy

 

[3literV8Eater]

Piece was nowhere to be found. Knocked the exhaust around and didn’t hear any rattling. But no cats or restrictions in exhaust so it probably shot out.

That is odd that the flapper just came off like that. Something to be watchful of on future turbos for quality checks and assurance.

 

[kern417]

something to check: a lot of people clock the downpipe clamp wrong, so the wastegate arm hits it and it messes with boost control and calibration. make sure the bolt on the clamp is not in the way of the linkage. it should be underneath the downpipe if at all possible, so basically sitting horizontal.

 

[_Sp1ral0ut]

something to check: a lot of people clock the downpipe clamp wrong, so the wastegate arm hits it and it messes with boost control and calibration. make sure the bolt on the clamp is not in the way of the linkage. it should be underneath the downpipe if at all possible, so basically sitting horizontal.

You should add some beatbox text to your signature here on the forums. I always watch until the very end of your videos just to hear it. lol. No cap.

bschk bmmm ti bschk bsck pmm pk ti pk pmmm bmmm bsck bck ti ti bmmm

I wouldn't have thought about the dp clamp. Solid advice.

 

[FuzzyRev]

something to check: a lot of people clock the downpipe clamp wrong, so the wastegate arm hits it and it messes with boost control and calibration. make sure the bolt on the clamp is not in the way of the linkage. it should be underneath the downpipe if at all possible, so basically sitting horizontal.

Yup, I've always clocked mine at six o'clock with the nut facing the frame rail.

 

[i3igpete]

sooo dont do this.... because I am pretty sure I did

 

[kern417]

sooo dont do this.... because I am pretty sure I did

yep, exactly.

easy to install/tighten the bolt.

not so good if the wastegate arm is banging against it during driving.

just rotate it down and out of the way and you should be good.

 

[mike08282002]

Similar thing happened to my Daw turbo 2 years ago, wastegate arm seized. After a few messages and video to owner Shawn he sent me another exhaust housing and I just swapped over. Shit happens it’s just how it’s handled. Could have sent the turbo back but that meant more down time, I’d rather do it myself as I had an event coming up I didn’t want to miss.

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