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No power after 6k Datalog included

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bbarnumboy

10+ Year Contributor
52
1
Feb 20, 2012
Everett, Washington
Hi guys I have included a datalog that I just made. It is a 3rd gear pull to about 7000 rpms.

My problem is that I seem to have no power after 5500-6000 rpms. The car is very quick right up to that point.

Please lok at my log and let me know what you think. My gauge is showing an almost solid 11.7 AFR, but the computer log shows otherwise? not sure what is up with that, it used to only be off by a point or 2.

Am I maxing out my turbo and running out of breath? I am running what i believe to be a Big 16G, 660cc injectors, FMIC, walbro 255, Aeromotive fuel pressure regulator, 2G MAF sensor, 3 inch full APEXI exhaust, external wastegate and running DSM Link...

Currently running between 20-24 PSI 22 on average.

What do you guys think?
 

Attachments

  • 3rd Gear Pull, dead after 6k.elg
    4.4 KB · Views: 65
Please don't tell me you paid someone to do that to your timing sliders. A 16g usually falls on its face after 6-6.5k but your car is sucking there because your timing sliders look like a 2 year old adjusted them.

I can't do anything with that log without you adding MAFRaw to your captured values and post a few minutes of an idle log with the car warmed up (+180* coolant temps).

You don't want to adjust timing using sliders in my opinion.
He's got v2, that's all he's got are timing sliders!

:dsm:
 
we have the timing set that way to reduce knock I did not check the base timing before we did the tune so it may be off to begin with are you willing to help I can do the log with that I only for a few minutes.
 
I looked over the list in the only things I have left to do would be to check mechanical timing an electrical timing. I fear that if I reset the base timing then I will throw my whole tune of. I already have a pretty good running tune except for the top and so I fear messing it up by adjusting the base timing but I will go ahead and check it first and then I will run a few minutes of idle log for you with the settings you stated. Ilways have a pretty good Idle, it idles around 15.5 afr and my cruise is almost dead solid 14.7. I will get back as soon as I check my timing.
 
AFRs at idle and cruise don't mean a thing, and the WOT tune you've got on it is garbage (no offense). Those timing sliders look like a blind tuner adjusted them so, if you want to know the truth, I'm basically going to be starting over on it.

:dsm:
 
I hear you, I will try to find the time today to check both mechanical and electrical stock timing. I will try to get back tonight with an Idle log to look at.
 
Ok I have confirmed Mechanical Timing is correct and I have posted pictures below. I used the DSMLINK ground simulator option to confirm the base timing. I do not have experience with this.....But I set the ground option and confirmed with my timing light that I am dead on at 5 degrees BTDC. After removing the ground it sits between 7-11 degrees. I pulled my plugs in the process and checked my gaps. I have them set at 0.24"

I have run a 4 minute Idle log for you and attached it as well.

Let me know what you think.

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  • Idle for 4.5 minutes.elg
    29.2 KB · Views: 34
I would re gap your plugs to 0.28 and maybe even throw a fresh set of NGk's in there....while Corey does his thing.
 
I was under the impression that most people run them lower for higher boost pressures, to keep them from getting blown out? I believe I am running NGK BPR7ES and they are pretty new, within the last 3,000 miles.
 
Last edited:
So I got to it and removed my Injen Intake and put my Dejon intake on. Well I now have more power up top and am leaning out across the board. Apparently my Dejon is way more effective than the Injen. But I still have a power loss up top overall.
 
I use the same plugs gaped to 0.28 at 20 psi on my 16g...in your log where you going lean look at the direct access tables for fuel.

When looking at the table, go to you log and move the cursor to the Lean spot. After doing so go back to the table and press track datalog.

Then add fuel in the table until you reach your desired afr.

Repeat repeat repeat

Log change, log change, log etc. LOL

Try the plugs at .028 it's 12 mins out of your day.
 
Not sure I have seen those options before but i will try it out tomorrow whe i get back in town.
 
I use the same plugs gaped to 0.28 at 20 psi on my 16g...in your log where you going lean look at the direct access tables for fuel.

When looking at the table, go to you log and move the cursor to the Lean spot. After doing so go back to the table and press track datalog.

Then add fuel in the table until you reach your desired afr.

Repeat repeat repeat

Log change, log change, log etc. LOL

Try the plugs at .028 it's 12 mins out of your day.

Don't use fuel tables to tune, those are only meant to be the target AFR. If logged AFR doesn't match target, that's what MAF compensation is for.

OP, you're fine running a smaller gap on your plugs, I'm running non protruded plugs and had to gap down to .022 to get rid of blowout at 18psi. Every car seems to be a little different in that aspect though so experiment with it until you find what works for you.
 
Corey did you catch that i threw up an idle log a few days ago? you are probably busy so no rush, just making sure you did not miss it. :)
 
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