Volant Cai Problem

Stoneman2382 · August 3, 2009

Hey Guys,

I just installed a Volant PowerCore Cold Air Intake on my 09 GMC Sierra Denali. I had my truck custom tuned w/ a DiabloSport Preditor prior to installing the Volant CAI and my LTFTs were exactly how they should be. After installing the CAI and doing some logs, My LTFTs are saying i'm running 15% rich. I've checked for air leaks and made sure everything is tight mulitple times, but they are staying at anywhere from -13 to -15%.. Has anyone else run into this problem?

Here's what my CAI looks like

http://www.truckcustomizers.com/images/pro.../K8VOL125.1.jpg

but here's a better look at what the filter looks like.

http://image.sporttruck.com/f/18286330+w75..._air_filter.jpg

Does anyone know why this is running so rich? If anything I would think it would run more lean...

Spurshot · August 3, 2009

Stoney,

Just a shot in the dark, and you may have already done this; check the MAF connections.

Stoneman2382 · August 3, 2009

I've checked and the MAF sensor is as tight as I can get it without breaking it.

Stoneman2382 · August 3, 2009

I've also verifed that the MAF sensor is installed with the arrow pointing in the direction of the airflow.

Spurshot · August 3, 2009

You might try reinstalling the stock air box and duct and give that a check. It may be it's not directly related to the Volant and was coincidental it cropped up now.

Ghostwhite · August 3, 2009

my vote goes to unhook and rehook all major tubing just to be certain that a tight seal is made at all connections.

Stoneman2382 · August 3, 2009

I will try both of these suggestions when I get off of work and keep ya posted. Thanks for the suggestions guys.

Stoneman2382 · August 3, 2009

Ok.... just did a 30 second log without a filter at all and it went even richer... went to -16% and -17% on cruising log... I'm going to put my stock airbox back on and see what the numbers show...

Draenor · August 3, 2009

Did you readjust your tune after the install? You may need to tweak a parameter a bit.

Stoneman2382 · August 3, 2009

Thats what I'm trying to do is retune. I've been working w/ Lew that does custom tunes for DiabloSport, but we cannot get the LTFTs dialed in to tweak the tune.

06MonteSS · August 3, 2009

Did you readjust your tune after the install? You may need to tweak a parameter a bit.

point is, we're "trying" to get his ltft's dialed in.. and they were - right at 0 to -1...

after he added this volant CAI with that powercore filter, he went way RICH - ltft's dropped like a brick down to -13 to -15... shouldn't happen with a CAI...

I'm not going to adjust the fueling +15% to lean it out to compensate for that, when that shouldn't be happening...

now we're investigating the CAI numbers, compiling a bunch of data to try and see what's up...

so, that's the issue he's having...

Draenor · August 3, 2009

Thats what I'm trying to do is retune. I've been working w/ Lew that does custom tunes for DiabloSport, but we cannot get the LTFTs dialed in to tweak the tune.

Did you readjust your tune after the install? You may need to tweak a parameter a bit.

point is, we're "trying" to get his ltft's dialed in.. and they were - right at 0 to -1...

after he added this volant CAI with that powercore filter, he went way RICH - ltft's dropped like a brick down to -13 to -15... shouldn't happen with a CAI...

I'm not going to adjust the fueling +15% to lean it out to compensate for that, when that shouldn't be happening...

now we're investigating the CAI numbers, compiling a bunch of data to try and see what's up...

so, that's the issue he's having...

Gotcha. It is hard to tell without seeing all the peramaters. Yes, they should not drop that much.

Draenor · August 3, 2009

Ok.... just did a 30 second log without a filter at all and it went even richer... went to -16% and -17% on cruising log... I'm going to put my stock airbox back on and see what the numbers show...

Cruising mode, as in the engine is running in closed loop, no WOT runs? If so, it shouldn't be taking any reading from the MAF.

In any case, your not getting enough air.(Computer wise)

Stoneman2382 · August 3, 2009

Here are the Logs.. The 1st is with PowerCore filter. The second is just w/ volant Box No filter attached.

To View the .log files, you will need the Data Viewer program (DiabloSport Data Viewer)

But the CSV files can be opened in Microsoft Excel.

Cruising_Log_with_Filter.zip

cruising_log_without_Filter.zip

Cruising_Log_with_Filter.zip

cruising_log_without_Filter.zip

Cruising_Log_with_Filter.zip

cruising_log_without_Filter.zip

Cruising_Log_with_Filter.zip

cruising_log_without_Filter.zip

Spurshot · August 3, 2009

I'm really interested to see what the issue turns out to be. Please keep us posted to the end. Sorry couldn't be more helpful. I'm really anxious to see what happens when you put the stock box back on.