I want to see the LTFTs and STFTs of a AEM intake equiped TC cobalt. Thanks.

 

Also, if anyone has some info on the Injen intake, provide that too. I have no idea how to analyse the info, but someone (hint, hint Terminator2!) should take a look at any data on the available intakes and make a recommendation based on solid evidence (not on which one they have) so I know which one to get!

 

That is what I am doing. My Dejon is off the car because it was really causing issues with my fuel trims that I tried to tune out to no avail (cannot tune out turbulance in the intake) Wild A/F swings excess popping and backfiring, Crap gas mileage, poor performance you name it. TOFU sent me a log of his INJEN intake I will look it over when I get home but it shows about 5-6% change if the LTFTs which means th MAF is skewed by that same on the average. My Dejon was more like 11-12% or more in some areas. Car runs so much smoother and better on the stock airbox compared to that Dejon intake.

 

i need to start logging my hahn intake, from what i hear its causing problems

 

Pimp check your LTFTs and STFTs. The LTFTs should be between 0 and -2 ideally but up to -4 or -5 is ok. STFTs should between -5 and +5 but 0 most of the time.

 

Aeroforce FTW! I will post my results when I get back from liftin

 

We all appreciate it!

I was thinking that I would get the Stage 1 kit and then the Injen intake, but if there are major problems with all of them, I'll probably just let GM improve my intake with Stage 2...

 

Or wait for the Clear Image Auto short ram. And from what I hear - the GM Stage 2 only comes with intake and sensors...it is not sold seperately.

 

Short Term was -3 to 0

Long term was 10.9?

Maybe i should log just "fuel trim" the Aeroforce has so many fuel trims its rediculous

 

I believe you are mistaken...Stage 1 is the sensors and tune...Stage 2 is just parts for the intake...

 

And I seem to be the odd one out with having NO swings to my STFT's or LTFT's....

except for this weekend but it hasn't happened before! ::shrugs::

 

Did you run it this weekend? No really... that's actually a serious question.

Apparently WOT causes the most skew to the trims when you've got an intake.

 

I can't even look at the ltft and the stft with my interceptor. Wtf?!?! Its stuck on some high ass number and won't move

 

Anyone thought about taking a K&N (or whatever brand you prefer) cone filter, taking the top of our factory airbox off (just the lid), putting a silicone sleeve in the end of our factory intake tubing and mounting the cone filter to the other end of the silicone sleeve so that the filter still sits in the factory air box? It would kind of resemble the GMPP intake that's avail for the 2.4's and 2.2's. I doubt it would do a whole lot for performance but I think it'd sound cool and it shouldn't cause any MAF sensor issues, plus it should only cost like 40 bucks. I wanted to try it but I've been too busy to go looking for the parts to do it the last couple weekends.

 

No I didn't... it was a 2 hr drive to the beach!

 

Well... hmph

In the end we're all just going to have the stock intakes with the stock filter taken out and a cone filter on the end of the snorkel in the fender.

 

How long are you guys cruising on the highway before checking LTFT's? I know mine tend to settle down after 5-10 miles (or so). If I'm doing just purely city driving they seem to creep up a bit to the rich side. Car is bone stock.

Just using my pocketpc OBDII logger.

 

modded air box snorkel is the way folks...

if anything, just use the elbow off your kit on your stock air box(which is possible with the AEM kit, don't know about the others)... now its ridiculous to pay $300 for that elbow, but its really all you need...

too bad someone doesn't offer JUST it... that'd be the way to go... Cut the restriction off the snorkel, use a coupling to connect it back to the air box, then use the better flowing elbow up top from the MAF to the BPV

Matt from ZZP can probably chime in on that, he is running something similar on their car(or was)

 

I would check on that if I were you....that's not what I read....

I really wish that Clear Image Automotive would get their damn short ram intake out....so people can test it out.

 

http://gmtunersource.com/index.php/b...-are-you-ready

Read please...

 

you dont want the CAI from them?

 

Your log you sent me is showing everytime you go WOT your STFTs go very negative they were negative -7 to -13 which means the ECM is subtracting fuel because the amount of air it is seeing is less than the MAF is showing. If you look your VE airflow is way less than your MAF flow.

That means it is adding 11% extra fuel on the average because the MAF is seeing less flow than the engine is actually seeing. Unfortunately that 10% extra fuel can carry over to WOT which means you can be running up to 10% richer than commanded. You would have to log your wide band and compare it to your commanded EQ to see for sure.

 

Term, did you have any luck calibrating your MAF with the Dejon intake? Apparently all that's needed is to find the cross sectional difference between the stock intake and aftermarket one, which I'm assuming is the area, percentage wise and multiplying the MAF calibration table by it. Not sure if anyone else has had luck with this, but it maybe worth a try.

If not, the intake is coming off.

 

Nahhhh

I live in NJ and use the car to commute. I just don't want the issues with water, aqua shields, etc.

I think if GM wanted the filter in the fender, they would have done so.

 

Mine was really wacky kinda like there was turbulance over the sensor because I was able to get the LTFT close to zero but it was running like crap. If you LTFTs are within a couple percent of your stock logs it will be easy to tune out if it is erratic like mine was it will be hard to tune out.
Update: My LTFTs are -4 to -5 with the stock intake on I wonder if that is normal? If not, I have a leak some where in my chargepipes maybe. I have no codes though.