5 Star Intake vs Airaid vs afe

[SilverBolt]

Background: My work includes knowledge of statistical tools for SIx Sigma Projects. I had taught basic statistics for about two years to many in our work force of 2,200 employees.

Please forgive that this information is obtained from a non-Ford product. Please note that this non-Ford car will be traded for my Raptor when it arrives at the dealership.

Upon receipt of my 2009 Dodge Challenger R/T (345 cu.in. Hemi), I began monitoring my gas mileage via actual tracking the miles run per fillup and the gallons purchased. I only used 93 octane. I used 10 fillups for my baseline. Though I don't have the data sheet within my reach at this time, the average mileage was around 19 mpg for combination city and highway conditions.

After getting a baseline, I purchased a CAI made by RotoFab and installed it in place of the stock intake. The RotoFab filter is a conical filter much like the ones mentioned in this thread. After repeated tests, ten more fillups, I noticed that I was averaging about 20 mpg. A statistical difference was shown via a 2-Sample t Test. (I can post the test results at a later date, if desired)

I did not have an aftermarket tune applied, I was running the stock tune.

Did I notice a performance improvement? Not that I could feel, apart from the sweet sucking sound at WOT.

IMO, the reduction in pressure drop across the intake added in improved efficiency. I do believe that a tune would have taken advantage of the pressure drop reduction to generate more power, whereas without the tune there is only an economical improvement.

Regrets: I wish that I had dyno'd the car before and after. And ideally, these tests should be done for a full year to account for the difference between the winter and summer blends of gas (BTU/gal).

BTW, I plan to do the same test with my Raptor when it arrives, but with my Raptor I do plan on adding the 5 Star tune after completing the economical test (20 fillups: 10 before and 10 after intake installation)

Based on your 1 mpg gain how many miles will you need to drive to recoup your intake investment?

 

[Deinonychus]

None of my mods were based on any ROI condition.

 

[Deinonychus]

But you have me a little interested.
I have put about 35,000 miles on my Challenger since I had the CAI installed.
At 19 mpg it would have consumed 1842 gallons of gas.
At 20 mpg it consumed 1750 gallons of gas.

That's a difference of 92 gallons.
Let's assume that I paid $3.50 per gallon, which would total $322.00.
I paid $329.00 for the Roto Fab CAI.

So, if my assumptions are correct, I am $7.00 short of recouping my investment.

I'm about 760 miles away from paying for the CAI.

 

[Hockster]

We used to call it Sick Sigma!!! lol

 

[Deinonychus]

We used to call it Sick Sigma!!! lol

I'm guessing that was pretty universal.

I called it "Sick Stigma", but now I are one.

 

[SilverBolt]

But you have me a little interested.
I have put about 35,000 miles on my Challenger since I had the CAI installed.
At 19 mpg it would have consumed 1842 gallons of gas.
At 20 mpg it consumed 1750 gallons of gas.

That's a difference of 92 gallons.
Let's assume that I paid $3.50 per gallon, which would total $322.00.
I paid $329.00 for the Roto Fab CAI.

So, if my assumptions are correct, I am $7.00 short of recouping my investment.

I'm about 760 miles away from paying for the CAI.

Much faster than I would have guessed.

 

[Maxx2893]

Assuming the 1mpg gain stayed to with the raptor. You would recover your money even faster due to the higher percentage of your gain.