lv2000

hey guys i just wanted to know who has the fipk for the gs400 if its worth it any improvement or just sound ?? im real tempted to just break down and get a s/c but maybe this will hold me over for awhile

rominl

iTrader: (4)

call me stupid but what is fipk?

Hameed

Air Filter from K&N

FIPK = Fuel Injection Performance Kits

http://www.knfilters.com/FIPK/fipk.htm

Lexis11

Rome I was glad to see you ask that because I had no clue what that was either.lol

redgs4

Minimal gain at the higher end and potential loss at the lower. But sounds great and really cleans up the engine bay.

FutureGS400

Exactly! K&N site shows a dyno chart with a 10 HP gain on the high end.

lv2000- Deciding between an S/C and a K&N FIPK? Apples and oranges to say the least...
The SRT intake with ECU mod is supposed to give a bit more power than the K&N.
Here's a pic of the K&N installed on my car:

jucee187

didnt GURU post saying that if you put an intake other than the SRT/ECU you MUST add a SAFC??.. or else the car will be running lean?..

JunctionGS

actually, with the FIPK, I believe you don't have to (I added one anyways) but the FIPK's diameter of piping isn't as agressive as lets say SRTs hence the SAFC isn't needed, but recommended!

FutureGS400

I agree, my car shows absolutely NO indications of running lean. In fact it runs excellent under all conditions and pulls like crazy at higher RPM! A bit more intake noise than I would like, but at WOT it sounds awesome! I may also consider a SAFC at some point though...

bitkahuna

iTrader: (20)

I have FIPK. On dyno/O2 tests it never ran lean - in fact it runs rich from 4000rpms up (even stock does apparently) so the shop used my SAFC-II to back off the fuel a bit from 4000rpms up.

lv2000

its not deciding on a s/c or a fipk thats not even apples to oranges i figured just the fipk for now then in 6 months get the s/c i just bought a rolex so i need to chill out for a couple months

FutureGS400

A Rolex!?
Man, just think of the car mods you could have gotten...

rodel

iTrader: (3)

K&N states that the air filter could give you an " Increases Power (up to a 26 HP gain) " This is claim is extreme and hardly true for ANY air filter. You'll be lucky if you get 5 hp.

For those of you that have it and DYNOed...did you get notable increase in HP?

Until you get rid of the stock air flow meter (AFM), adding the FIPK neither significantly alter the air/fuel ratio nor the add significant HP gains. Once you start modifying the fuel system, e.g., bigger injectors, modified AFMs, then the AFC would be a handly tool.

SCWells72

I know at one point there was no FIPK for the GS430, but then it seems that people were saying it exists. Looking at K&N's site, I only see a normal air filter:

http://www.knfilterchargers.com/sear...x?Prod=33-2220

Does anyone know for sure if the FIPK is available for the GS430 and, if so, what the part # is?