Drop-in K&N filters - a waste of time/money?

semtex · 01-15-2009, 03:48 PM

I'd like opinions on the following question. Given that there are no CAIs on the market yet for the 370, does it make sense to replace the paper air filters with K&Ns for the time being? Or is it a waste of money that won't really make any difference?

Nismo 370z · 01-15-2009, 04:00 PM

You do know that the stock intake is a cold air intake already. CAI's have proven to lose power on the 350/G35. I dont know what they do for the G37.

MC · 01-15-2009, 04:02 PM

on the HR 350z motor the drop ins were good for about 4hp on the dyno in my buddies car ive got them in my GTR and someone recently dynoed them on a GTR and saw no real gains

but regardless of gains you are getting more airflow and they last a long time even without reoiling them

so they arnt a waste i dont think

Scribe · 01-15-2009, 04:02 PM

Quote:

Originally Posted by semtex

I'd like opinions on the following question. Given that there are no CAIs on the market yet for the 370, does it make sense to replace the paper air filters with K&Ns for the time being? Or is it a waste of money that won't really make any difference?

They should be good for some very mild gains. The stock intakes flow fairly well and you won't likely see decent gains until you uncork the exhaust if the G37 is any indication. Nissan is leaving less and less on the table for the aftermarket. I will be saving my money for a true dual exhaust system with high flow cats, then a flash and then intakes. The sound gained from open element intakes on the G37 is incredible.

semtex · 01-15-2009, 04:53 PM

Thanks for the input, guys. I went ahead and ordered a couple.

Endgame · 01-15-2009, 05:36 PM

Quote:

Originally Posted by semtex

Thanks for the input, guys. I went ahead and ordered a couple.

How much??

nogoodname · 01-15-2009, 05:40 PM

Quote:

Originally Posted by Nismo 370z

You do know that the stock intake is a cold air intake already. CAI's have proven to lose power on the 350/G35. I dont know what they do for the G37.

the Injen ones really Failed for the G37.... the Stillen G3 Intakes will produce some power......... i would say within 3 months it will be released...that's just my guess

CrownR426 · 01-15-2009, 06:12 PM

Ah ****, I have a k&n filter here at the shop... lol.
If you guys need any auto parts I can get it cause my dad get's hooked up from places.
K&N Filters are the best. :P

semtex · 01-15-2009, 06:38 PM

Quote:

Originally Posted by Endgame

How much??

$127.18 for the pair, incl sales tax (6%). I just called the local Autozone and they said they'll have them by tomorrow.

Nismo 370z · 01-15-2009, 06:48 PM

Quote:

Originally Posted by nogoodname007

the Injen ones really Failed for the G37.... the Stillen G3 Intakes will produce some power......... i would say within 3 months it will be released...that's just my guess

Really? I thought that the Injens did well on the HR. I guess the vvel on the vhr is so finely tuned that aftermarket companies need to really put out a product that can actually deliver. I do have high hopes for the stillen. Also I hope short rams can make power as well like those from JWT. I know that most intakes dont make much power...we all just get them for the noise

Pushing_Tin · 01-15-2009, 09:17 PM

Quote:

Originally Posted by semtex

$127.18 for the pair, incl sales tax (6%). I just called the local Autozone and they said they'll have them by tomorrow.

Cool, let us know what you think after you've run them for a week or two.

shumby · 01-15-2009, 09:54 PM

ya the only intake to make power so far for the HR with out a tune is the stillen gen 3 long tube intake. But inen is coming out whit another try

Nismo 370z · 01-16-2009, 03:15 AM

^ Do u think the VVEL on the VHR's do anything to the ECU when adding aftermarket intakes on the car? I mean that could cause a drop in hp from what people are seeing right?

Minicobra1 · 01-16-2009, 03:25 AM

Here they are for $83.90 a pair

K&N Performance Air Filter, 07-09 350Z/370Z - The Z Store, your Datsun & Nissan Z & ZX source!

Crash · 01-16-2009, 05:56 AM

Quote:

Originally Posted by Nismo 370z

^ Do u think the VVEL on the VHR's do anything to the ECU when adding aftermarket intakes on the car? I mean that could cause a drop in hp from what people are seeing right?

No... CIA will not affect that. The air intake temperature sensor comes after the filters. Meaning, the temperature of the air will not mess with the computer. It would be no different than going from cold weather to hot weather. The AIT senors will adjust accordingly.

K&Ns are a waste of money, IMO. If you're going for track use, you MAY get 1/100th of second better times, but they won't be as consistent. I got more consistent times with paper filters than I did with the K&N. Also, they're REALLY made for off-road use.

Not all oil-based filters are good.

01-15-2009, 03:48 PM	#1 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 54 Posts: 5,995 Drives: People to drink Rep Power: 32	Drop-in K&N filters - a waste of time/money? I'd like opinions on the following question. Given that there are no CAIs on the market yet for the 370, does it make sense to replace the paper air filters with K&Ns for the time being? Or is it a waste of money that won't really make any difference? __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

01-15-2009, 04:53 PM	#5 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 54 Posts: 5,995 Drives: People to drink Rep Power: 32	Thanks for the input, guys. I went ahead and ordered a couple. __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

01-15-2009, 06:12 PM	#8 (permalink)
CrownR426 A True Z Fanatic Join Date: Nov 2008 Location: South Korea Posts: 4,676 Drives: Manual Rep Power: 848	Ah ****, I have a k&n filter here at the shop... lol. If you guys need any auto parts I can get it cause my dad get's hooked up from places. K&N Filters are the best. :P __________________ Love + Hardwork + Passion RIP SVTRacer

01-15-2009, 09:54 PM	#12 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 44 Posts: 6,288 Drives: your sister Rep Power: 236	ya the only intake to make power so far for the HR with out a tune is the stillen gen 3 long tube intake. But inen is coming out whit another try __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

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01-15-2009, 04:00 PM	#2 (permalink)
Nismo 370z Base Member Join Date: Jan 2009 Location: LA, California Posts: 91 Drives: 2012 GM Nismo 370z Rep Power: 481	You do know that the stock intake is a cold air intake already. CAI's have proven to lose power on the 350/G35. I dont know what they do for the G37.

01-15-2009, 04:02 PM	#3 (permalink)
MC Moderator Join Date: Oct 2008 Location: NC Posts: 3,238 Drives: 2015 GTR NISMO Rep Power: 24	on the HR 350z motor the drop ins were good for about 4hp on the dyno in my buddies car ive got them in my GTR and someone recently dynoed them on a GTR and saw no real gains but regardless of gains you are getting more airflow and they last a long time even without reoiling them so they arnt a waste i dont think

01-16-2009, 03:15 AM	#13 (permalink)
Nismo 370z Base Member Join Date: Jan 2009 Location: LA, California Posts: 91 Drives: 2012 GM Nismo 370z Rep Power: 481	^ Do u think the VVEL on the VHR's do anything to the ECU when adding aftermarket intakes on the car? I mean that could cause a drop in hp from what people are seeing right?

01-16-2009, 03:25 AM	#14 (permalink)
Minicobra1 A True Z Fanatic Join Date: Nov 2008 Location: Orange County, CA. Posts: 1,205 Drives: 370Z Tour, Spt, 6mt Rep Power: 645	Here they are for $83.90 a pair K&N Performance Air Filter, 07-09 350Z/370Z - The Z Store, your Datsun & Nissan Z & ZX source!