Aftermarket Intake HP Test

[I<3myFRS]

Hey guys,

Here are two great articles to see how much power you're actually making with your aftermarket intake. Not that surprised that a tune is required to see maximum gains. Hope you guys find this useful!

http://dsportmag.com/the-tech/scion-...programed-ecu/

http://dsportmag.com/the-tech/scion-...esting-ecutek/

[Mr.Impreza]

Yep, just a drop in filter will be the wisest choice.

[mizzta21]

i own a K&N like everyone else on here i assume, but a little suggestion for you guys. try the Blitz Drop In filter, that filter is underrated and to me i feel has better high end and throttle response. i currently have the blitz over the K&N in my stock box.

[Mr.Impreza]

Originally Posted by mizzta21

i own a K&N like everyone else on here i assume

I have an Apexi Drop in filter =P

[GrimmSpeed]

This article is one that comes up every so often, and was published I believe about 3 years ago, before people really knew a lot about these ECUs.

The main issue with their testing: Ignition Advance Multiplier is not at 1, so every single intake is limited in horsepower. Resetting the ECU before every single install makes sense (and is what we did when we tested intakes the same way), except that if you don't force the IAM to 1.0 the results you see are gimped. Every single intake and drop in filter makes about the same power because the ignition timing is still lowered.

So it's not the most accurate source of intake information out there, by far.

The other thing I don't like is how they don't show the AFRs for drop in filters, but they do for everything else. This makes the assumption that there is no change (which we saw big changes in AFR in our testing with just DIFs), so why aren't they showing this information?

So while they might look like good 3rd party tests, it's important to pay attention to the details, especially when the things that are overlooked are the MOST important.

Chase
Engineering

[Icecreamtruk]

Originally Posted by mizzta21

i own a K&N like everyone else on here i assume, but a little suggestion for you guys. try the Blitz Drop In filter, that filter is underrated and to me i feel has better high end and throttle response. i currently have the blitz over the K&N in my stock box.

You mean this one? Did you previously had a K&N and decided to change to the blitz afterwards? Did you have a tune?

[mav1178]

Originally Posted by GrimmSpeed

So while they might look like good 3rd party tests, it's important to pay attention to the details, especially when the things that are overlooked are the MOST important.

It's painfully obvious OP is affiliated with DSport...

-alex

[mizzta21]

Originally Posted by Icecreamtruk

You mean this one? Did you previously had a K&N and decided to change to the blitz afterwards? Did you have a tune?

i have them both, switched back and forth between the two as well as resetting the ECU. whats interesting is (note*and this is all going by my butt dyno.) that when i had my stock front pipe the K&N felt better, better throttle response throughout the whole rpm band. (i currently have stock headers, catless FP and N1) when i switched over to a catless Frontpipe the car seemed to like the Blitz drop in better. ive switched back and forth countless times, reset the ECU before every switch. tested the filters in the cold mornings and evenings, tested the filters in the warmest part of the day and imo the Blitz has felt better. i have no dynos to prove it and im willing to bet the differences are miniscule and probably not worht spending another $45 for a .07 hp difference if you have one or the other. just my 2 cents!


p.s. no tune. i will be getting OFT soon tho

[Icecreamtruk]

Originally Posted by mizzta21

i have them both, switched back and forth between the two as well as resetting the ECU. whats interesting is (note*and this is all going by my butt dyno.) that when i had my stock front pipe the K&N felt better, better throttle response throughout the whole rpm band. (i currently have stock headers, catless FP and N1) when i switched over to a catless Frontpipe the car seemed to like the Blitz drop in better. ive switched back and forth countless times, reset the ECU before every switch. tested the filters in the cold mornings and evenings, tested the filters in the warmest part of the day and imo the Blitz has felt better. i have no dynos to prove it and im willing to bet the differences are miniscule and probably not worht spending another $45 for a .07 hp difference if you have one or the other. just my 2 cents!


p.s. no tune. i will be getting OFT soon tho

Thanks a lot for the info. I do have the K&N already im just wondering for other options as the time to clean mine will come soon and its $25 for a cleaning kit or $55 for a blitz. Altho I have a full exhaust and tune, so I dont know how wise it will be to switch the filter (the tune was a custom one on dyno).

[mizzta21]

Originally Posted by Icecreamtruk

Thanks a lot for the info. I do have the K&N already im just wondering for other options as the time to clean mine will come soon and its $25 for a cleaning kit or $55 for a blitz. Altho I have a full exhaust and tune, so I dont know how wise it will be to switch the filter (the tune was a custom one on dyno).

If you don't mind spending the money get the blitz and try it. It certainly has a larger filter area than the K&N. Doesn't hurt to have two filters laying around. I'm sure urs custom tune won't be too far off if u switched.

[Falcon]

If you change more than just a Filter, only a remap can bring out the full Potential of the System.

[stevo585]

Originally Posted by GrimmSpeed

This article is one that comes up every so often, and was published I believe about 3 years ago, before people really knew a lot about these ECUs.

The main issue with their testing: Ignition Advance Multiplier is not at 1, so every single intake is limited in horsepower. Resetting the ECU before every single install makes sense (and is what we did when we tested intakes the same way), except that if you don't force the IAM to 1.0 the results you see are gimped. Every single intake and drop in filter makes about the same power because the ignition timing is still lowered.

So it's not the most accurate source of intake information out there, by far.

The other thing I don't like is how they don't show the AFRs for drop in filters, but they do for everything else. This makes the assumption that there is no change (which we saw big changes in AFR in our testing with just DIFs), so why aren't they showing this information?

So while they might look like good 3rd party tests, it's important to pay attention to the details, especially when the things that are overlooked are the MOST important.

Chase
Engineering

Initially yes it will show gains. Are those gains still there after a 1k miles? No the ecu will correct the lean condition. If you get a tune then you negate the effect even more.