melbitoast

iTrader: (1)

Just a quick note. One of my best friends and I put our ISFs against each other tonight. 3 rounds from 0 to ~ 115mph. Results: Joe-Z - 3, K&N + muffler delete - 0. And it wasn't close. 1-2 car lengths each time.
His was louder and meaner sounding, mine was faster. Just an fyi for those considering intake mods. I drove his afterwards, and it just felt sluggish. You could feel the power was there, but it just wouldn't go.
Sorry for no vids, but it was just him and me so concentration was on driving only.

Side note: his is lowered as well and the cornering difference was night and day!! Definitely looking forward to installing my springs and sway bar kit soon!

iH8RICERZ

iTrader: (3)

You guys should've switched cars and tried running against each other... could be that your buddy is shifting early or late. I doubt an intake mod would make you a car length faster... it sounds more like the driver.

RCB

iTrader: (18)

Do you have completely stock exhaust and just the JoeZ intake?

ShadowISF

iTrader: (10)

Yeah, it could be the driver in this case.

ISF4life

iTrader: (30)

The K&N intake might be the problem for the sluggish , it's heat soaked. muffler deleted maybe lost some power ? .

boostftw

iTrader: (3)

1-2 car lengths? sounds more like headers

MisterSkiz

iTrader: (2)

either that or the MAF sensor is covered in oil from the oiled k&n intake.

melbitoast

iTrader: (1)

That's actually how we did it. He thought it felt sluggish, so he wanted me to test it with him. So he drove mine. And before anyone says it , no, I didn't hold back b/c I'm looking into different mods, so I wanted to know the difference.
He ran my car in Sport/Auto each time while I ran his twice in Sport/Auto and once in Sport/Manual. Manual was actually the worst run... I ran each gear to 6800-7000 rpm (i.e. near redline), so unless that's not the proper shift timing, I'm not sure why that run was the worst.

Intake only w/ stock air box and filter
Definitely want the exhaust though!

He and I both read all over CL regarding the intakes, and the majority of the reading indicated lost power from the K&N. I read something on here that the muffler delete maybe added slight hp gains.

JDMV8

iTrader: (6)

The cone shaped intakes for this car not only heat soak, but they mess with the car's AFR readings.
Until the car can be properly tuned, these intakes are just wasted potential.
Joe-z intake utilizes a DI filter, and all it does is smooth out the air flow.
It's like an upgraded stock
Although I didn't do many conclusive tests, I do have firsthand experience and have done a lot of research.

melbitoast

iTrader: (1)

lol, found out my friend ordered a Joe-Z intake and stock air box yesterday morning!
G35, my friend was thinking the same thing you said about the AFR.

SeanGTS

iTrader: (1)

Now THIS sounds like research and science, I approve of this testing. And I'm sure it was done on a closed circuit

JDMV8

iTrader: (6)

A closed public highway...
In mexico

MRxSLAYx

If you want to gauge the difference your going to need to do a roll race.

melbitoast

iTrader: (1)

uhhh....plead the 5th?

melbitoast

iTrader: (1)

from what? 40? 60?

there are a couple of spots around Austin where we could get away with quick testing.

hell, some of the redneck cops around here would probably partake!