The LNF Tuning Guide

[Jar Jar]

I've logged twice now for about 30 mins each time since taking the BPV apart to check the diaphragm and haven't seen any knock and I haven't changed the tune either. Not sure if the diaphragm was sitting funny or what but it seemed to have gone away after taking it apart and putting it back together.

[JoshMass]

Thats what I did was make a custom PID. I didnt do [SENS.34.psi] tho, I just did [SENS.34] and selected psi from the drop down list. Then set the range to 0-2500. Showed nothing at all

I just read through this whole thread again and didn't see a solution to logging fuel pressure. I know that a few of you are logging fuel pressure but I've searched all morning and can't find the answer. Help!

[Iam Broke]

You need the latest 2.23 beta and the Commanded and Actual High Presssure fuel PID's are available in the scanner.

[JoshMass]

You need the latest 2.23 beta and the Commanded and Actual High Presssure fuel PID's are available in the scanner.

Thanks! I have the 2.23.256 beta. I'll look them up tonight when I get home.

[Iam Broke]

Remember, you have to add them to the table before you can chart or log them.

[JoshMass]

I'm aware of that part. I just hadn't looked at the new parameter release since March and totally forgot about the desired and actual FP PID's being added.

[Dayhoff35]

did my first pull with it and got some knock


I did the timing smoothing also

im gonna mess with it a little more now and see how it goes

and im a newb at this stuff so far but im learning through the book that was suggested on here, but what do i put in the charts to datalog boost i cant find it, i had it there but then it disapeared

[Iam Broke]

There is a parameter called Boost Sensor Lo Res that will give you the boost pressure in the lower charge pipe (good for > 22.4 psi at WOT) and you can use MAP for the manifold pressure up to 255 kPa or ~22.4 psi.

[Dayhoff35]

ok thanks alot man

[Dayhoff35]

i just put the map on my last log and and it said i hit 36psi?

[Iam Broke]

You have to subtract BARO from it. (~14.7) That would be a bit over 21 psi boost.

[BackyardTurbo_FTW]

Ive never seen KR that looked like that on a LNF car, that's strange Greg! I can send your file to your email and you can play with that a bit if you want?

[Dayhoff35]

Yeah i thought it was a little strage too. I had some on my trifecta tune also so i was suprised to see that, athough not as bad. If you could do that nick i would appriciate it.

[Dayhoff35]

You have to subtract BARO from it. (~14.7) That would be a bit over 21 psi boost.

Could i set that up in the chart to already subtract that out?

[Iam Broke]

Yes, make a custom PID.

[cobaltssoverbooster]

Could i set that up in the chart to already subtract that out?

Yes, make a custom PID.

[PID.11.PSI]-14.7

[Frost]

Ive never seen KR that looked like that on a LNF car, that's strange Greg! I can send your file to your email and you can play with that a bit if you want?

If you set the decay value very high and the KR is somewhat more severe you get the long spikes that go away quickly and come back such as what is seen here.

[Jar Jar]

[PID.11.PSI]-14.7

You can make a PID that measures the Manifold pressure and subtract barometric pressure

([SENS.30.MET] - [PID.2340.MET]) / 6.894757

[cobaltssoverbooster]

You can make a PID that measures the Manifold pressure and subtract barometric pressure

([SENS.30.MET] - [PID.2340.MET]) / 6.894757

yea i used what i put up to get started then moved to the charge pipe sensor cause im over 23psi but thats way more accurate than what i had for sure.

[BackyardTurbo_FTW]

If you set the decay value very high and the KR is somewhat more severe you get the long spikes that go away quickly and come back such as what is seen here.

I agree, but on the LNF we can't adjust that.