[Blk16SS]

As I previously mentioned, the fit and finish is very nice to say the least. Does it make power? K&N guarantees it does. Their claims are as much as 24hp/17tq in some spots. I know that can be taken with a grain of salt, but after installing it, it didn't take long to realize its making a few more ponies . I know we're just talking about basically an air filter but coming from a green drop-in, the car has spunked up abit.......

[travislambert]

Anytime you change the airflow characteristics around the mass airflow sensor the MAF calibration in the ECM must be adjusted to match if you want to engine to work properly.

Some people just like the added horsepower and don't care why it works. There's nothing wrong with that I suppose... to each his own.

If you care why, the short is, the MAF sensor is now miscalibrated and your engine is running leaner than before.

The MAF is now measuring less air than what's actually going into the engine (but it's probably flowing almost exactly the same as before). Now that the computer thinks there's less air, it's using less fuel. So less fuel with the same amount of air makes the car's AFR more lean than the factory intended.

Notice the jump in the charts you posted at around 4k RPMs. That's because the computer has fixed airflow models it blends with the MAF to estimate airflow. Because these models are unchanged, it helps offset the error with the MAF. However, above 4k the computer relies almost exclusively on the MAF. Since your MAF is now reading incorrectly, the AFR is now lean... and "leaner is meaner".

Over time the computer will use readings from the oxygen sensors to correct for the error of the MAF while running in closed loop... So most of the horsepower gain below 4k RPMs will eventually disappear.

The part that sucks is if you get the MAF tuned for the CAI, the horsepower is going to (mostly) disappear. You really will only benefit from a CAI if you need to flow a lot of air in a forced induction setup as the "cold" in the cold air intake isn't much of a factor anymore. The stock airbox does a pretty good job of getting fresh air.

[Blk16SS]

Originally Posted by travislambert

Anytime you change the airflow characteristics around the mass airflow sensor the MAF calibration in the ECM must be adjusted to match if you want to engine to work properly.

Some people just like the added horsepower and don't care why it works. There's nothing wrong with that I suppose... to each his own.

If you care why, the short is, the MAF sensor is now miscalibrated and your engine is running leaner than before.

The MAF is now measuring less air than what's actually going into the engine (but it's probably flowing almost exactly the same as before). Now that the computer thinks there's less air, it's using less fuel. So less fuel with the same amount of air makes the car's AFR more lean than the factory intended.

Notice the jump in the charts you posted at around 4k RPMs. That's because the computer has fixed airflow models it blends with the MAF to estimate airflow. Because these models are unchanged, it helps offset the error with the MAF. However, above 4k the computer relies almost exclusively on the MAF. Since your MAF is now reading incorrectly, the AFR is now lean... and "leaner is meaner".

Over time the computer will use readings from the oxygen sensors to correct for the error of the MAF while running in closed loop... So most of the horsepower gain below 4k RPMs will eventually disappear.

The part that sucks is if you get the MAF tuned for the CAI, the horsepower is going to (mostly) disappear. You really will only benefit from a CAI if you need to flow a lot of air in a forced induction setup as the "cold" in the cold air intake isn't much of a factor anymore. The stock airbox does a pretty good job of getting fresh air.

Very good info... Thank you....

[travislambert]

Originally Posted by Blk16SS

Very good info... Thank you....

No problem.

I don't mean to be a downer or anything. The good news is your car does have more horsepower now.

[sub_ETCS_ret]

Originally Posted by travislambert

No problem.

I don't mean to be a downer or anything. The good news is your car does have more horsepower now.

Hahaha. Like the Grinch that stole Christmas.

Sent from my SM-G920V using Tapatalk

[Blk16SS]

Originally Posted by travislambert

No problem.

I don't mean to be a downer or anything. The good news is your car does have more horsepower now.

No downer. I know what I have and I know exactly what I bought.... have yet to tune the car and I've built/raced hotrods since the 80's so I've experienced both old and new technology ,never claiming to know it all. Your points were well taken....

[KILLA BEE]

Man please, whatever he says .
Those #s are GREAT, OLD SCHOOL ALWAYS wins. K and N dont post, brag, none of that. They just know there the shit.
AND THE #s are better than rotofab and its 267.00 on the k&n website

[EFI Tuning]

The airflow demands are highest at the upper RPMs yet the bulk of the gains are in the low to mid range. This indicates the calibration is being impacted not true airflow gains. The curves don't look good at all.

[DFW1LE]

Assuming a stock engine, would a tune be more beneficial with the stock air box or with one of the CAIs?

[KILLA BEE]

Originally Posted by EFI Tuning

The airflow demands are highest at the upper RPMs yet the bulk of the gains are in the low to mid range. This indicates the calibration is being impacted not true airflow gains. The curves don't look good at all.

DAMN!!
And I was also told that the stock #s are that of a 5th SS L99.
O well heck there still great #s bro. Do you there will always be positive and negative replies

[KILLA BEE]

Originally Posted by DFW1LE

Assuming a stock engine, would a tune be more beneficial with the stock air box or with one of the CAIs?

The stock air box is hard to beat period. You can put a drop in k&n air FILTER with that stock box and be extremely happy would you agree EFI TUNING??????

[Blk16SS]

Originally Posted by EFI Tuning

The airflow demands are highest at the upper RPMs yet the bulk of the gains are in the low to mid range. This indicates the calibration is being impacted not true airflow gains. The curves don't look good at all.

I'm sure some EfiTuning can straighten it all out. I just need to make a doctor's appt....

[travislambert]

Originally Posted by DFW1LE

Assuming a stock engine, would a tune be more beneficial with the stock air box or with one of the CAIs?

I'd say with a tune feel free to use either. You might improve the airflow slightly with a nice CAI, but it's not going to be much.

Personally, I'd really like to see a stock SS with dyno runs with and without an air filter (stock airbox). The run without an air fliter should be really darn close to the maximum benefit you ever get from any CAI setup.

With my LT4 I went with a K&N filter in the stock airbox. The K&N filter for the SS flows 830.3 cfm @ 1.5 inH20. My engine doesn't reach 830 cfm until about 5,700 RPM. At redline it's flowing about 870 cfm @ 11 PSI of boost. So an engine making over 600 hp to the wheels is barely starting to see some flow restriction from the stock airbox. I can't imagine a stock SS even coming close.

[KILLA BEE]

Originally Posted by travislambert

I'd say with a tune feel free to use either. You might improve the airflow slightly with a nice CAI, but it's not going to be much.

Personally, I'd really like to see a stock SS with dyno runs with and without an air filter (stock airbox). The run without an air fliter should be really darn close to the maximum benefit you ever get from any CAI setup.

With my LT4 I went with a K&N filter in the stock airbox. The K&N filter for the SS flows 830.3 cfm @ 1.5 inH20. My engine doesn't reach 830 cfm until about 5,700 RPM. At redline it's flowing about 870 cfm @ 11 PSI of boost. So an engine making over 600 hp to the wheels is barely starting to see some flow restriction from the stock airbox. I can't imagine a stock SS even coming close.

Ummmmm there is a video EXACTLY like you requested.
Lethal camaro did one check it out

https://youtu.be/dbbNzzolR34