Buckling concerns on turbo

[incutebus]

Hey everyone. I have a jdl turbo that was installed about a month ago tuned by James @ HRI(I believe he's on vacation or something). Anyhow, at around 4k rpm it feels like theres intermittent fuel cutting cruising at that rpm / 80mph. It does this on occassion accelerating as well. I took a log of it if anybody wants to chime in.

Parts:

1050x injectors
dw265lph fuel pump
delicious flex fuel kit+ with upgrade
2867r turbo w/ upgraded intercooler from jdl
jdl catchcan
3" overpipe / frontpipe from jdl w/ stock catback


https://ufile.io/5qdf04nn

Is the .csv file

I sent him the log already but he hasn't gotten back to me yet so just wanted to see if anyone wants to chime in.

[tomm.brz]

cna you upload logs to datazap
that link opened like 40 popups in my phone and had to reboot it to make it usable again

[incutebus]

Originally Posted by tomm.brz

cna you upload logs to datazap
that link opened like 40 popups in my phone and had to reboot it to make it usable again

https://datazap.me/u/swagnuts/log-15...?log=0&data=22

[tomm.brz]

maybe intake leak since you have a crazy -30 fuel trims

[incutebus]

Originally Posted by tomm.brz

maybe intake leak since you have a crazy -30 fuel trims

I checked, there's no leak.

[tomm.brz]

something is off anyway, can t believe James left you with those trims

[incutebus]

Originally Posted by tomm.brz

something is off anyway, can t believe James left you with those trims

What I don't understand is.. if there's a leak how come it mainly happens at that rpm? I certaintly don't hear a leak. However, there is an uncovered port on the turbo intake that has no air coming out of it. Do I need to block it?

https://jdlautodesign.net/shop/ft86-...turbo-system/#

If we take a look at the tube, it has a nipple on it. Does that need to be covered?

[steve99]

Fueling seems strange 15% accelerator and target afr 15. Fuel trims like tom brz said seem off up to -30.


If your sure no leaks, check no oil on maf sensor.



Manifold pressurecseems strange as well assume its absolute . Reads below 14 psi atmospheric so its producing no boost at 4000 rpm with 15-20% accelerator.



Check your di computer is bolted up tight all three bolts
Check map sensor


Difficuult to tell as we dont know if tune is maf or speed density or hybrid

[incutebus]

Originally Posted by steve99

Fueling seems strange 15% accelerator and target afr 15. Fuel trims like tom brz said seem off up to -30.


If your sure no leaks, check no oil on maf sensor.



Manifold pressurecseems strange as well assume its absolute . Reads below 14 psi atmospheric so its producing no boost at 4000 rpm with 15-20% accelerator.



Check your di computer is bolted up tight all three bolts
Check map sensor

Will double check rn. What about the nipple?

[steve99]

Originally Posted by incutebus

Will double check rn. What about the nipple?

Map sensor should read 14 psi or 1 bar with ignition on but engine off. Whwn engine idling it should read about 4 psi or about 0.3 bar

[incutebus]

Originally Posted by steve99

Map sensor should read 14 psi or 1 bar with ignition on but engine off. Whwn engine idling it should read about 4 psi or about 0.3 bar

AFR idle ~ 14.7 to 15.2 goes up and down, 3.1 long term and -6 short term idle, 4.5 map psi, maf sensor showing 1.2v. a/f correction 3 0.2.

All of this is at idle currently.

[incutebus]

Originally Posted by steve99

Map sensor should read 14 psi or 1 bar with ignition on but engine off. Whwn engine idling it should read about 4 psi or about 0.3 bar

https://datazap.me/u/swagnuts/log-15...?log=0&data=22

heres idle, also just went outside to check for any leaks. No leaks. MAF sensor bolted on properly. Could the catchcan be the issue?

Sorry, what's a di computer?

[incutebus]

That's the picture of the catch can, I used a hose clamp go seal it but it may still be leaking?

[DarkPira7e]

Where is that hose coming from? If that's a pcv catchcan, your feed from the engine should be going to the top port.

Did you clamp down the hoses UNDER the intake manifold? Here's a glimpse of mine in the middle, you can see a worm clamp on one of the 3 hoses.