[mturonek]

So I had my car on the dyno a couple weeks ago (dynojet loaded). It only made 300hp/464 ft lbs to the wheels. Changed all the vacuum lines and it still doesn't seem to feel any different. Sometimes I feel like it pulls harder than others but I'm not for sure. No check engine lights on. I ran a data log using the torque app with extended pids. First half is normal driving and second half is 0-100 pull. Looking for some help reading it and figuring out what could be the issue. Thanks in advance.

[robnitro]

Your afr at the section where you pushed it is kind of lean, 20. Boost also seems low, I thought JR 2.8 does 34 psi?

You should log the fuel rail pressure because it seems you are not getting the full fuel. Airmass looks low because of lower boost and less fueling.

Maybe your pedal needs to be recalibrated, that also could make you request a lot amount of fuel. I haven;t done it but rheingold/ista-d should have a test and reset available.

Device T Speed(M/s)afr airmass(lb/min) emp(psi) egtF fuelfl(lb/hr) boostpsi
-
0.02 12.23 19.90 28.53 45.60 630.86 7112.04 30.34 -
0.02 19.77 20.35 30.67 48.36 676.22 7427.88 30.22 -
0.02 23.87 20.35 30.67 48.36 676.22 7371.48 28.72 -
0.02 29.43 19.64 28.96 46.36 716.36 6937.20 30.97 -
0.02 31.94 19.87 29.26 46.89 744.80 7258.68 31.69 -
0.02 36.42 19.93 28.99 46.07 766.22 7253.04 30.34 -
0.02 41.73 19.64 28.16 37.09 820.76 1167.48 24.82 -
0.02 41.82 28.98 11.48 15.15 747.32 287.64 5.33 -
0.02 41.73 28.98 11.22 17.17 707.00 0.00 5.57 -
0.02 38.24 28.98 9.24 14.31 644.00 0.00 4.92 -
0.02 34.86 28.98 8.82 12.51 620.96 0.00 4.44 -

[dmanb2b]

Reset all adaptations?

[mturonek]

Ill do another log with fuel rail pressure. Anything else I should add as well? When I first deleted the car it would smoke a little under load. Now it doesn't at all and the turbos seem quietier.

[mturonek]

Originally Posted by dmanb2b

Reset all adaptations?

How do I do that?

[robnitro]

Maybe the mods should put a sticky on how to get a good k+dcan and find rheingold/ista-p. I know places but I'm not sure what the mods would want.

[BB_cuda]

Originally Posted by robnitro

Maybe the mods should put a sticky on how to get a good k+dcan and find rheingold/ista-p. I know places but I'm not sure what the mods would want.

Please PM me this info.

[bayerischer]

what seems to be the procieger is that besides all the vacuum lines, the 1. pressure converters are gradually blocking, even though u may have a new design, so not sure ur case, but then also 2. egr pressure converter (supposedly introducing vacuum into the system), again not sure if US cars have it, then could be 3.turbo electric valve, or 4.MAF sensor or the 5.Air Mass sensor...
other problems might be 6.some part around turbo's or 7.turbos themselves
last but not least, could be dirty 8.injectors that supposedly didn't show on the diagnostic fault on one's member car.
don't forget fuel filter too

[mturonek]

Driving home this morning definitely seemed to be intermittent power loss. Sometimes it would hesitate bad taking off from a light before the turbos would spool and others it was normal. Fuel filter was changed about 5k miles ago. Almost always put diesel kleen with each fill up. Where do I start with these sensors? What's the normal parameters for the maf and air mass sensor?

[Torqu3]

Originally Posted by robnitro

Maybe the mods should put a sticky on how to get a good k+dcan and find rheingold/ista-p. I know places but I'm not sure what the mods would want.

We have a coding subforum. Mods do not exist here. I've messaged the admins many times to resolve that issue to no avail.

[JuiceQuadre]

Its pretty easy to get ISTA if you do just a bit of googling, you end up in the coding subforum mentioned here

I did that few days ago, now im just waiting for my cable to come

These forums with people having intermittent power loss are popping up so regularly, there are couple of threads where everything is explained in detail if you do a bit of searching. Im experiencing the same but am waiting for my DCAN cable to do some better logging and diagnostics before throwing any more parts at it besides those already changed or ordered.. (people usually start with vacuum lines, searching for boost leaks, maf, o2, pressure converters, could be injector.. its pretty frustrating)

good luck

[mturonek]

Changed the pressure converters and cleaned the MAF. I think I fixed the problem. Heres an updated data log if someone can translate it for me

[robnitro]

Just open it with excel, choose delimited- by tab. It will show fine.
I'm not sure what you want us to look at. If you don't have a problem, congrats.