TDStuart Tuning Adventure

[GregO]

PMAS shows it facing towards the rear of the car in everything I have seen from them. I could always call support and ask

Or you could listen to Terrys advice and reclock the MAF housing and retest.
Sooner or later the laptop needs to be set aside and the tools need to come out.

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[tdstuart]

Manifold pressure may briefly spike above Barometric on a tipin, but to be steady 5 inHg above isn't possible. It usually 1-2 inHg below barometric, less in a good flowing NA intake system.

Hmm. Ill attach some lund logs of the car previously for reference if you want to check them out.

These should all have the JLT 120mm (18-23) intake.

All the hptuners vct scanner logs are from one of my first Lund E85 tunes where the fuel trims were off (at least as far as I remember). All the .csv logs are from my ngauge and are from my E85 R3 Lund tune which has been the fastest tune.

The hptuners logs are from motor #2, the ngauge logs show a comparison of motor #2 (old motor) vs motor #3 (new motor). We are still on motor #3. Motor #2 and Motor #3 are the same setup but motor #3 is noticeably slower but that's for a different thread later down the road (you can see the logs are still good but load is down in the new motor if I remember correctly).

I was sending K4fxd the logs hence why they are titled that haha.

All these were probably in the winter time with d/a around 1000-2000 and temps from high 40s to low 70s.

 

[tdstuart]

Or you could listen to Terrys advice and reclock the MAF housing and retest.
Sooner or later the laptop needs to be set aside and the tools need to come out.

Juggernaut tuned the airflow and injector data just fine and I saw no difference in fuel trims with taking the fog light out so I really don't believe there is a physical issue with the maf or cai setup.

And I take Terrys advice with a grain of salt after he recommended Juggernaut

 

[Pistol_91]

Just because the lund tune was "the fastest" doesn't mean it was right. Clearly something going on with the car thats strange.

 

[tdstuart]

Just because the lund tune was "the fastest" doesn't mean it was right. Clearly something going on with the car thats strange.

Never said it was "right" but if the car is running good, safe, and fast then its close enough for me.

 

[Pistol_91]

Then just fix the MAF curve and add your timing in and be done with it

 

[GregO]

Juggernaut tuned the airflow and injector data just fine and I saw no difference in fuel trims with taking the fog light out so I really don't believe there is a physical issue with the maf or cai setup.

And I take Terrys advice with a grain of salt after he recommended Juggernaut

Just how many names are on that blacklist of yours ?

 

[GregO]

Then just fix the MAF curve and add your timing in and be done with it

There’s still the IAT fluctuations to solve.

 

[K4fxd]

If this was my car I would reinstall the stock injectors and CAI. I would then make sure the MAF was correct. New sensor? then I'd install the LU47's. If the MAF curve is jacked I'd tune the injectors. After the injectors are tuned then I'd install my CAI of choice and tune that.

At this point you will have a properly tuned fuel and air system.

Next I'd increase my borderline timing, then play with cam timing. I'd start with the numbers posted in this thread and use that as a base line.

If you have problems tuning the stock parts you know 100% it is a mechanical problem that needs tracking down.

 

[tdstuart]

Just how many names are on that blacklist of yours ?

Not a blacklist and not many

But when you spend $1000 on a tuner and they can’t get the car to shift at a higher rpm than stock and don’t listen to you about cam timing you get upset

Also the forum members who aren’t getting paid have better response times then them

 

[markmurfie]

At what vehicle speed is this pressure reading ?

65-66, it drops as speed goes up from there.

 

[K4fxd]

Gen 2's don't have baro sensors. How is atmosphere calculated?

 

[GregO]

65-66, it drops as speed goes up from there.

Interesting
Thx

 

[junits15]

If this was my car I would reinstall the stock injectors and CAI. I would then make sure the MAF was correct. New sensor? then I'd install the LU47's. If the MAF curve is jacked I'd tune the injectors. After the injectors are tuned then I'd install my CAI of choice and tune that.

At this point you will have a properly tuned fuel and air system.

Next I'd increase my borderline timing, then play with cam timing. I'd start with the numbers posted in this thread and use that as a base line.

If you have problems tuning the stock parts you know 100% it is a mechanical problem that needs tracking down.

I'm in agreement with this advice. There's too many moving parts here. Triston I don't know your background but it took me personally a bout two months to develop my first finalized tune and my car only has headers. That was after lurking around here and the HPT forum for around a year or so.

I'd absolutely be going as close to stock as I can on this thing and then tuning each mod individually. You can do it, but its really a tall ask to do it all at once with no prior experience.

 

[junits15]

You have the determination, just need to focus it a bit and take your time. I've made similar mistakes, I thought I could rebuild a transmission with zero experience and zero guidance. You can guess how much metal was on the magnet after the first drive.

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