Headbanging issue on BT setup

[connor123me]

Installed custom gtx2871r setup. (Just buy a fucking CTS BOSS next time, note to self)

First runs I made with WG spring seeing full pressure I made plenty of boost.

Log of first pull: https://datazap.me/u/connor123me/4th...?log=0&data=18

Builds Lots of nice linear boost. Again this is with waste-gate all the way open.

Working with my tuner, at one run I made boost completely fell off.

Log: https://datazap.me/u/connor123me/mp-...?log=0&data=18

Waste-gate Got stuck open. I fixed it. Now nothing hs been right since, and I'm at a loss for words.

Now the thing makes boost to a certain point, and then decides no more boost.

These next logs are with the waste-gate completely disconnected, which should force it to over boost to infinity- and yet it boosts up----- and then drops to nothing.

https://datazap.me/u/connor123me/mp-...g=0&data=18-21

https://datazap.me/u/connor123me/mp-...&zoom=990-5121

I've checked the wastegate- its fine (had the exhaust off 3 times now) - no- there are no boost leaks (maybe a superrrrrrrr small one but nothing that would cause this)

The turbo did sound louder (like a whine sort of) after I put the exaust back together fixing the stuck wg actuator.

WTF happened? Anyone have any ideas? Did my turbo shit the bed and just wont spin fast enough? I cannot figure it out and I'm losing my damn mind.

[deadheaded]

When you say "fixed" the "stuck" wastegate on a new turbo, what did you do to it exactly?

[connor123me]

When you say "fixed" the "stuck" wastegate on a new turbo, what did you do to it exactly?

Waste gate flapper was extended far enough it went past the degree where it could return. I fixed it by shutting it again. At this point the turbo wont even make enough boost to run the actuator (crack pressure is about 10psi)

[SNice]

Waste gate flapper was extended far enough it went past the degree where it could return. I fixed it by shutting it again. At this point the turbo wont even make enough boost to run the actuator (crack pressure is about 10psi)

I feel you on the “shoulda gone with a BOSS” comment! Lol. I’m trying to fit an efr and it’s definitely not the easy or cheap(er) route!

…I don’t know if this could be your problem (I hope it is not) but thought I would give it a mention - when I was “playing” with my turbo, I discovered that the wastegate flap could open far enough to contact the turbine wheel. I know you have a different turbo but might be worth a look.


Sent from my iPhone using Audizine Forum

[connor123me]

I feel you on the “shoulda gone with a BOSS” comment! Lol. I’m trying to fit an efr and it’s definitely not the easy or cheap(er) route!

…I don’t know if this could be your problem (I hope it is not) but thought I would give it a mention - when I was “playing” with my turbo, I discovered that the wastegate flap could open far enough to contact the turbine wheel. I know you have a different turbo but might be worth a look.


Sent from my iPhone using Audizine Forum

hahah yeeeppppppp. I actually saw your build a while back and it made me go "ya know what I think I'll try this too, it could probabbly be cheaper!" boooyyyyy was I wrong. To all who are reading JUST BUY A F*CKIN BOSS

Dual Ball bearing turbo shit out the bearings is what happened. I was hesitant to try one because I always felt like hydraulic bearings were a safer more reliable route and hard to break. Well I wish I would have done so.

At this point I'm jut putting my Mambatek KO4 Extreme back on because I want to drive my damn car again. It's been over 2 months of the engine build and trying to fit this damned turbo. I'll continue the big turbo efforts in spring when its not so cold.

[Nano909]

Blast some old Born Of Osiris and your headbanging issues will go away.

[bb-tt]

I feel you on the “shoulda gone with a BOSS” comment! Lol. I’m trying to fit an efr and it’s definitely not the easy or cheap(er) route!

…I don’t know if this could be your problem (I hope it is not) but thought I would give it a mention - when I was “playing” with my turbo, I discovered that the wastegate flap could open far enough to contact the turbine wheel. I know you have a different turbo but might be worth a look.


Sent from my iPhone using Audizine Forum

did you not get the bw wg for the efr?

[bb-tt]

nm too early for thinking

[connor123me]

ah shit, here we go again

Got a replacement turbo from the manufacturer.

First WOT pull
https://datazap.me/u/connor123me/new...g=0&data=14-18

Second WOT Pull
https://datazap.me/u/connor123me/3rd...?log=0&data=10

Well the first pull it made nice boost until it fell on its face and just lost boost out of nowhere.
Second pull it will now not make boost past 3500.

About to drive my car off a cliff.

[Jason11213]

ah shit, here we go again

Got a replacement turbo from the manufacturer.

First WOT pull
https://datazap.me/u/connor123me/new...g=0&data=14-18

Second WOT Pull
https://datazap.me/u/connor123me/3rd...?log=0&data=10

Well the first pull it made nice boost until it fell on its face and just lost boost out of nowhere.
Second pull it will now not make boost past 3500.

About to drive my car off a cliff.

Who is your tuner?

[connor123me]

Who is your tuner?

I hired a guy from Norway and then took over the project myself. Tuning is not the issue here, I've tested and re-tested numerous things. Even disconnected the BOV and Waste gate Actuator, so It should have boosted to mars and back. But I still get the Same. Exact. Result

[apeck240]

I hired a guy from Norway and then took over the project myself. Tuning is not the issue here, I've tested and re-tested numerous things. Even disconnected the BOV and Waste gate Actuator, so It should have boosted to mars and back. But I still get the Same. Exact. Result

Touching 0.9 lambda, fuel trim fuckin maxed out, wg% locked and the tune isn't an issue?

[Spawne32]

Touching 0.9 lambda, fuel trim fuckin maxed out, wg% locked and the tune isn't an issue?

[connor123me]

Touching 0.9 lambda, fuel trim fuckin maxed out, wg% locked and the tune isn't an issue?

Not saying the tune is perfect by any means. I'm saying I don't believe that is what causes boost to disappear. I was able to get consistent boost on the first turbo for a few runs until not.

[Spawne32]

Not saying the tune is perfect by any means. I'm saying I don't believe that is what causes boost to disappear. I was able to get consistent boost on the first turbo for a few runs until not.

Well if you ever want to hire another tuner, let me know, whatever hes charging you, ill do it for less.

[apeck240]

Not saying the tune is perfect by any means. I'm saying I don't believe that is what causes boost to disappear. I was able to get consistent boost on the first turbo for a few runs until not.

So the first one locked up fast, what happened to the second one? Do you have good oil feed?

[connor123me]

Well if you ever want to hire another tuner, let me know, whatever hes charging you, ill do it for less.

I may just take you up on that. For now I'm pausing big turbo attempts until spring and I'm putting my F23L back on. What software do you use to tune with out of curiosity?

[Nano909]

Well if you ever want to hire another tuner, let me know, whatever hes charging you, ill do it for less.

Toonerreceived_475743820801503.jpg

[apeck240]

Not saying the tune is perfect by any means. I'm saying I don't believe that is what causes boost to disappear. I was able to get consistent boost on the first turbo for a few runs until not.

There shouldn't be even 1 full run if your short terms are literally maxed and it's still lean...

[connor123me]

So the first one locked up fast, what happened to the second one? Do you have good oil feed?

I'm beginning to wonder if the restrictor in the banjo bolt is too small. I'm thinking oil flow is the issue. Damn annoying and I'm banging my head on the wall.

[Spawne32]

There shouldn't be even 1 full run if your short terms are literally maxed and it's still lean...

As long as the pistons still move freely its fine.

[apeck240]

As long as the pistons still move freely its fine.

They move real nice when you melt the top edge off

[Spawne32]

I may just take you up on that. For now I'm pausing big turbo attempts until spring and I'm putting my F23L back on. What software do you use to tune with out of curiosity?

HPtuners, what software are you using?

[connor123me]

There shouldn't be even 1 full run if your short terms are literally maxed and it's still lean...

Second log. I increased KRKTE %10 and that brought fuel trims where they need to be. Again I understand this is not optimal- just working with what I got

- - - Updated - - -

HPtuners, what software are you using?

WinOls for tuning & Kess & KTag for flashing

[apeck240]

I'm beginning to wonder if the restrictor in the banjo bolt is too small. I'm thinking oil flow is the issue. Damn annoying and I'm banging my head on the wall.

Did it not come with the turbo? Bb feeds look pretty small

[connor123me]

As long as the pistons still move freely its fine.

Based reply

[connor123me]

Did it not come with the turbo? Bb feeds look pretty small

No. Came with the mambatek oil lines for the GT28 series BB turbos

[apeck240]

No. Came with the mambatek oil lines for the GT28 series BB turbos

Maybe drill that out a scoosh for the 3rd one

[connor123me]

Maybe drill that out a scoosh for the 3rd one

Waiting to get yelled at about how this is too small

[apeck240]

Waiting to get yelled at about how this is too small

Probably 0.035, Garrett calls for a little bigger iirc. Did you prime the turbos? Have you confirmed that hole is open and flowing?

[connor123me]

Probably 0.035, Garrett calls for a little bigger iirc. Did you prime the turbos? Have you confirmed that hole is open and flowing?

Yes, I primed the turbos, yes hole is open and flowing. Both times I took each turbo off the oil drain lines had plenty of oil in em

[Spawne32]

Probably 0.035, Garrett calls for a little bigger iirc. Did you prime the turbos? Have you confirmed that hole is open and flowing?

Supposed to be .065 is it not?

[connor123me]

Supposed to be .065 is it not?

Not entirely sure. The restrictor I have is a 1mm (.039") size. Garrett says .035-.065 I think. It just doesn't want more than 60psi of oil. If the turbo has a built in restrictor, than it possibly doesn't even need one in the banjo bolt.