G85 SS

I'm betting all of those codes are a result of the junky MAF extension.

You shouldn't see any of them once you have a better MAF extension. If you do see anything it'll be a too lean at idle code which can be fixed via MAF calibration in HPT.

The O2 may even be caused by the MAF as well honestly.

blueLNFftw

iTrader: (16)

Okay. Because I know I didn't have them prior to the tear down of the car. Even tho the car came to me as a piece of ****; it had no codes and I HP verified none were shut off lol.

blueLNFftw

iTrader: (16)

If the new MAF extension seems to have the same problems then I will buy a new OEM connector and pig rail and just cut and soldier.

I want to make sure it's right so term can tune more. Car does this weird boost drop and then jerks back. Like it will build 7psi, hiccup, drop to 3psi, and then slam boost and spoke up to 10psi and climb. It's weird. Like it lost signals for a second then found them and tried to recover.

tuned08ss

Hey blackssstg2, how'd you change your name?

blueLNFftw

iTrader: (16)

Idk what you are talking about :ninja:


Still awaiting the ZZP harness.
Hopefully that clears it up.
If not next step is pulling the MAF and cleaning it.
Last step will be to put it back in the intake and see if it is still reading high.
Replacement is the last step.

This is happening because the MAF maxed out and freaked out, so it shut itself down. Thank you Term!

blueLNFftw

iTrader: (16)

Zzp harness acquired.

I need quality t bolts that are not going to strip. My clamps are stripping out. I think that is another reason the maf keeps failing; too much flow.

Also. How many bolts hold on a wheel bearing? 3!

Original owner assumes one would work! Not.

Snail_SS

iTrader: (3)

Sometimes i wonder if the previous owner has some type of mental problems

blueLNFftw

iTrader: (16)

I am pretty sure he did.

Plus side is that I still have my LSJ to run around in. And that I keep having to go to ACE where this hot little asian chick works. Great excuses for conversation lol.

SSlobalt

This thread makes me weep a little because I can't even sell a beautifully kept CSS that hasn't been hacked up. In a southern state with no snow, even!!!

Snail_SS

iTrader: (3)

Yeah the op sure had a hell of a ride with the car and apparently its never ending

G85 SS

Mine sold a month after I posted.

Fully bolted, custom tuned, everything.

If you keep it clean and are honest with the buyer you shouldn't have issues. Hell, I took a little extra money and prepped the car for the buyer. New tires and brakes. A cheap investment to avoid. Huge hassle down the road. But even then, car is as is.

People still buy up the old skittles from 2003-2005. Just saying.

blueLNFftw

iTrader: (16)

Youre car is GORGEOUS, but its just priced too high.

blueLNFftw

iTrader: (16)

Exactly. I was SO honest with the guy I met last night to buy my LSJ. I am currently looking for the pictures from when it got hit so he can see how minimal it was and I have all the repair paperwork and warranty for him. Going to shave money off my sale price for tires for him too.

Honesty goes a long way in life.


New MAF harness arrived. Installed today and bought a bunch of ny t-bolts.
Hopefully this clears up my MAF issues so I can get a real tune!

blueLNFftw

iTrader: (16)

I'm about to burn this car to the ground. I keep getting up to 5 degrees of Kr in the mid RPMs. 3-5.5k. I also get it if I am cruising and tap the gas. It spikes and drops. Can't get it at idle or low RPMs. Doesn't have it in the top end. Ideas?

Next, the car randomly decides to cut boost. Always shifting into 3rd or right I as start to accel in it. It's like I hit a wall. Before the MAF was failing itself seeing 55lb/min in the 16k cell at 6k rpm because of stripped clamp on the lower cp. (Maf is relocated). I got that all situated and now the car sees 36lb/min in the 10k cell at 6k rpm. It was fine alllll day. No cel. Nothing. Then, again, out of nowhere it straight cut boost soon as I grabbed third and punched it.
No codes either.

blueLNFftw

iTrader: (16)

ECaulk

iTrader: (6)

Let Term get your fuel trims dialed in, the frame you have selected the LTFT is at -16.4, with a commanded lambda of 0.89 and an actual lambda of 0.82

Unplug your evap (electrical connector) and go do some logs, once Term gets things dialed in on the MAF freq table, then he can correct the base table after you do a long long log of varied driving trying to hit as many of the cells on the base table as you can.

blueLNFftw

iTrader: (16)

Look at my MAF though, 58lb/min in the 13k htz cell. I dont think any amount of fuel trim adjustment is going to fix that.
Plus the knock.

Also, does anyone have or know the PID to check knock by cylinder? I want to see where it is coming from.

ECaulk

iTrader: (6)

Its a option, under engine. Get the fuel trims dialed in before you start freaking out to much about mid range knock, the LNF ecu does some crazy stuff (thank you again Bosch). Not sure why the maf is reading 13k, I dont have my hptuners computer with me to see what maf fq I'm at in the top end, only option would be to check the maf wires all the way to the ecu

blueLNFftw

iTrader: (16)

Prior to relocating the MAF into the lower charge pipe the readings were as follows:
RPM 6735
Throttle 100%
MAF 30.22lb/min
MAF 9.2k hz
Lambda .88
MAP 220kPa


I have no boost leaks, yet my MAF readings are super high and my MAP reading is also up. Also, the MAF readings in that log aren't typical. When the car does that it cuts boost. If those readings are what show up in 2nd, when I shift to 3rd I am met with no boost at all.

When the car reads normal it will read the following:
RPM 6744
Throttle 100%
MAF 35.86lb/min
MAF 10.3k hz
Lambda .867
MAP 225 kPa

I have used two different MAF extension harnesses and the result is the same. I can't force the car to read the MAF that way either. That is what concerns me; how random the readings just freak out and that nothing replicates it. I was just going to replace the MAF. I would really like to have normal readings on airflow before tuning anything.

blueLNFftw

iTrader: (16)

I bought a new MAF. It was 45 on prime and OEM.

I failed the maf at 68lb/min and 16.2k htz at 4,000rpm not under wot. The wiring is good. It is also intermittent and seems to be getting more frequent.
I'm guessing it got ruined Laying around my garage for 5 weeks.

ECaulk

iTrader: (6)

Just leave it unplugged, Term should have your base table pretty good

blueLNFftw

iTrader: (16)

Unplug the maf? And log it?

ECaulk

iTrader: (6)

If its faulting, just leave it unplugged until the new one shows up. Its a quick and dirty speed density style tune, the ecu will default to the base table (load vs rpm) assuming Term has that set up decently you should be fine for normal driving and even low boost. I'd double check with him before going WOT with it

blueLNFftw

iTrader: (16)

This site is not loading well today.

blueLNFftw

iTrader: (16)

Good news is that disconnecting the MAF took away a lot of the mid RPM knock. Also, I have released that knock comes in when boost is being built. Soon as the gauge sees more than a couple psi, it starts that false knock pattern. I wonder if I need to take the Forge BPV off, clean and grease it? Maybe it is making enough noise to cause false knock?
The car idles really nice with no MAF as well.

Bad news is that it drives like **** and pegs very lean especially between shifts and accelerating from a stop. I plugged it back in, am going to drive it home, and drive my LSJ tonight and tomorrow.

Amazon overnighted me an ACDelco OEM MAF for $53.00 total. Can't lose.