Do not get an intake unless you're custom tuning the car!
so you wont like post a screen shot of a pull with fuel trims, afr's etc? why? because you are a tuner, you say yours is tuned properly. well I want to see it, compare how "far" mine is off. I guess I dont under stand how that is unfair to ask for.
That has nothing to do with what we're talking about here... Obviously they are on after it's tuned or we wouldn't be having this discussion. The whole point of this thread is an intake without a tune and what that does to the trims. You say its fine, plenty of people are saying it's not. I know the answer, go spend your time and use your stuff to do your own research. I have spent plenty of my own time figuring this out 
The people that come and get tunes from me all see how their car reacts thru the logger, I show them the trims, no KR, the boost etc.. All so they KNOW what their car is doing and that it is setup properly. If you want that service, buy a tune. Plain and simple.
The people that come and get tunes from me all see how their car reacts thru the logger, I show them the trims, no KR, the boost etc.. All so they KNOW what their car is doing and that it is setup properly. If you want that service, buy a tune. Plain and simple.
That has nothing to do with what we're talking about here... Obviously they are on after it's tuned or we wouldn't be having this discussion. The whole point of this thread is an intake without a tune and what that does to the trims. You say its fine, plenty of people are saying it's not. I know the answer, go spend your time and use your stuff to do your own research. I have spent plenty of my own time figuring this out 
The people that come and get tunes from me all see how their car reacts thru the logger, I show them the trims, no KR, the boost etc.. All so they KNOW what their car is doing and that it is setup properly. If you want that service, buy a tune. Plain and simple.
The people that come and get tunes from me all see how their car reacts thru the logger, I show them the trims, no KR, the boost etc.. All so they KNOW what their car is doing and that it is setup properly. If you want that service, buy a tune. Plain and simple.
Last edited by northvibe; Aug 18, 2010 at 03:29 PM. Reason: Automerged Doublepost
You are grasping at straws now... I didn't state ALL THIS STUFF, just stated you need a tune for an intake. You like to keep changing the topic to draw people away from the fact you have nothing but opinions and no proof on this subject 
But here since Im bored programming **** at work today, enjoy.

That's what fuel trims should look like
But here since Im bored programming **** at work today, enjoy.

That's what fuel trims should look like
**** I missed a straw...my bad. ok everyone, for every part you buy please tune your car again. We dont need anymore lnf's blowing up and making the mzr engine look better than us
k thnx.
k thnx.
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A chart without KR line! :-P
BYT's LTFT and STFT do not hunt around. That means more accurate commanded AFR. I have logged instances where the ECU commands .88, but runs too lean. Enough to cause knock, and it was less than a 5% error. I'm just on a K&N drop in.
Believe what you want, but unless you're looking at good data logs, you have no idea what's going on.
BYT's LTFT and STFT do not hunt around. That means more accurate commanded AFR. I have logged instances where the ECU commands .88, but runs too lean. Enough to cause knock, and it was less than a 5% error. I'm just on a K&N drop in.
Believe what you want, but unless you're looking at good data logs, you have no idea what's going on.
well I'm sure you smoothed the **** out of your lines. But ya I'll data log and post up my results. I hope they arent too jacked up but, thats why I bought my spare pcm, so I can tune it later and get my smarts better.
DONT CHANGE ALTITUDE! YOULL SKEW YOUR FUEL TRIMS!
i plan on logging my car this weekend with the stock air box and then whenever my K&N comes in i plan on logging that as well... we might play with hptuners, idk yet... hope to get a trifecta tune eventually but untill i see that its wildly out of what then im not worried about it.
im wondering how much a FRAM air filter would change the fuel trims... how about a napa brand? whatever autozones brand is?
i plan on logging my car this weekend with the stock air box and then whenever my K&N comes in i plan on logging that as well... we might play with hptuners, idk yet... hope to get a trifecta tune eventually but untill i see that its wildly out of what then im not worried about it.
im wondering how much a FRAM air filter would change the fuel trims... how about a napa brand? whatever autozones brand is?
I should have my K&N tomorrow and i have superchip tune. I think i can log the car and pull up graphs on SC's site?? I will post good or bad cause i don't give a ****.. BYT i will be coming to see you once all my parts come in for a TF/HPT tune..
I think alot of you tuners are missing the point with why we dont want to get tuned for the K&N and its not because were cheap! its simply because of warrenty my buddies a tech at gm and as soon as u tune the computer via hptuners or trifecta they know trust me. so that is the main reason atleast for me im not gonna have a 17,000 car lose its warrenty for an intake so apparently i should go back to the stock intake because reading this thread makes it seem like if you run an intake your cars gonna blow up.
So then don't install the intake if you're worried about warranty...that voids it too 
On the tuning: You are wrong, they don't know and we have proved it several times now. It can be fooled if done properly and YES it has been verified over and over again, even by GM tech's.
On the tuning: You are wrong, they don't know and we have proved it several times now. It can be fooled if done properly and YES it has been verified over and over again, even by GM tech's.
my buddy just broke a valve spring on his Z06 and is a tuner, the car had an E85 tune in it and he was making nearly 500 on a STOCK car... he just did write entire back to stock and they had zero to say to him about it... so either we've got some understanding dealers or not everyone does a write entire.
my buddy just broke a valve spring on his Z06 and is a tuner, the car had an E85 tune in it and he was making nearly 500 on a STOCK car... he just did write entire back to stock and they had zero to say to him about it... so either we've got some understanding dealers or not everyone does a write entire.
I was talking to a K&N Rep today and asked a few questions. Basically he said the intake DOES NOT require a tune. Also as far as warranty goes he stated that the dealer may frown upon it but if they deny a warranty based repair because of the intake, I was told to call them and they will straighten things out with the dealer.
I was talking to a K&N Rep today and asked a few questions. Basically he said the intake DOES NOT require a tune. Also as far as warranty goes he stated that the dealer may frown upon it but if they deny a warranty based repair because of the intake, I was told to call them and they will straighten things out with the dealer.
I'm too lazy to read allll these pages...
....but changing the diameter of an intake or even remotely changing the location of the MAF sensor will/can be problematic. It will/can drastically alter the calibration.
I am in agreement with this.
However, to say you can't do this with all new cars isn't accurate, not all cars use a MAF sensor to adjust fueling. Cars that do not have this can get away with this much easier.
That's my 2 cents, carry on
....but changing the diameter of an intake or even remotely changing the location of the MAF sensor will/can be problematic. It will/can drastically alter the calibration.
I am in agreement with this.
However, to say you can't do this with all new cars isn't accurate, not all cars use a MAF sensor to adjust fueling. Cars that do not have this can get away with this much easier.
That's my 2 cents, carry on
I was talking to a K&N Rep today and asked a few questions. Basically he said the intake DOES NOT require a tune. Also as far as warranty goes he stated that the dealer may frown upon it but if they deny a warranty based repair because of the intake, I was told to call them and they will straighten things out with the dealer.


