My comparison: JWT Popcharger vs. K&N drop-in
#1
My comparison: JWT Popcharger vs. K&N drop-in
I have a 2006 350z w/ manual transmission. Last weekend I removed my JWT Popcharger and reinstalled the stock airbox but with a K&N filter instead of the OEM paper filter element. I am not going to say "wow it's like night and day!" but I want to offer some of my observations after installing the stock airbox w/ K&N:
- The car seems to take off a bit more willingly from a stop.
- No more whistling sound at 3.5k+ RPM
- When the car is under heavy load (usually around 5k+ RPM) no more wide open growl...the engine noise is still loud but more subdued.
- Idle settles down more quickly after starting up the car
- Gas mileage gauge reads about 1 mpg higher than with the JWT installed in similar weather. Driving habits have not really changed to support the increase in efficiency.
If I think of any more differences I will post. My overall impression so far is that I am happy with this ~$50 modification. Now I need to decide whether or not to sell the JWT intake.
EDIT - One more observation, the exhaust note sounds a bit deeper. I'm not sure why but the tone was just a little higher pitch with the popcharger installed.
- The car seems to take off a bit more willingly from a stop.
- No more whistling sound at 3.5k+ RPM
- When the car is under heavy load (usually around 5k+ RPM) no more wide open growl...the engine noise is still loud but more subdued.
- Idle settles down more quickly after starting up the car
- Gas mileage gauge reads about 1 mpg higher than with the JWT installed in similar weather. Driving habits have not really changed to support the increase in efficiency.
If I think of any more differences I will post. My overall impression so far is that I am happy with this ~$50 modification. Now I need to decide whether or not to sell the JWT intake.
EDIT - One more observation, the exhaust note sounds a bit deeper. I'm not sure why but the tone was just a little higher pitch with the popcharger installed.
Last edited by sry110; 08-12-2007 at 06:43 PM.
#2
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I am amazed that folks are able to really "feel" much difference at all between a stock intake and aftermarket one much less between a K&N drop in and a cone filter, but hey if you felt it then you did.
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Originally Posted by Armitage
I love my JWT and I'm keeping it.
I gotta throw my other filter on though, the current one is durrrty!
I gotta throw my other filter on though, the current one is durrrty!
After all the Pop-Charger controversy I ended up getting one anyway.... When I took the Z out for a spin on the 405 and 105 fwys the "wooooot" sold me. I could feel a difference from the Pop and my Nismo exhaust combined. Now once the ECU completely understands what's going on (100-200 miles from now) I'm sure it'll only get better...
Seriously, if they were that bad, I am sure that the pop would not still be a hot selling item.
Think of this; The Pop-Charger is affordable, which means that there are many, many more under the hoods of Z owners... Of course you'll have accounts of "bad products" or "unsatisfied customers" due to the sheer number of them out there... It's all about ratios everyone...
Enjoy whatever decision you make with any mod you purchase/install...
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Originally Posted by roast
You should have went with the K&N drop in from the get go.... live and learn.
So it doesn't make noise, doesn't get heat soaked, and doesn't give the engine bay bling.... boohoo
So it doesn't make noise, doesn't get heat soaked, and doesn't give the engine bay bling.... boohoo
I'm surprised that JWT's stock doesn't plummet, or the company just shuts down based upon this site alone. Why is it that the only conical shaped open-element air filter that has such bad press on the Z board is the Pop-Charger?????
Last edited by QdotJ; 08-23-2007 at 05:39 AM.
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Mods are great. You'll have some people that love them and you'll have some people that will dislike them.
I have both an 06 airbox w/a KN drop in and a JWT Pop. I have no data to support which one is better than the other, all I know is that my senses (mostly hearing...lol) enjoy the JWT better.
In the end, YOU have to be happy with what you have.
I have both an 06 airbox w/a KN drop in and a JWT Pop. I have no data to support which one is better than the other, all I know is that my senses (mostly hearing...lol) enjoy the JWT better.
In the end, YOU have to be happy with what you have.
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Originally Posted by sixsigmalarry
Mods are great. You'll have some people that love them and you'll have some people that will dislike them.
I have both an 06 airbox w/a KN drop in and a JWT Pop. I have no data to support which one is better than the other, all I know is that my senses (mostly hearing...lol) enjoy the JWT better.
In the end, YOU have to be happy with what you have.
I have both an 06 airbox w/a KN drop in and a JWT Pop. I have no data to support which one is better than the other, all I know is that my senses (mostly hearing...lol) enjoy the JWT better.
In the end, YOU have to be happy with what you have.
The only "heat soak" I notice, is the amount of hot-air floating around this forum... Some members are just soaking it up too...
Oh well...
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i hear what both yall are saying and i agree. I have some input, i have jwt and stock. I ran the jwt for about 4 months and took it off now that its in the 100's. I was averaging about 25.6 miles to gallon ont he way to my school which is 95% highway. I put my stocker back on to see if i got less heat soak etc, and it doesnt seem like it runs any better. Also 3 days in a row no other driving then to school and back ive averaged 22.8 mpg. Coincidence im not sure but 3 miles to gallon is enough that this weekend im gonna switch back to the pop and see what happens.
#13
I started this thread and ran (unintentionally), but I just wanted to defend myself on one little point. I cannot feel a significant difference between the JWT and '06 stock with K&N, but the engine seemed to respond a little better when I engage the clutch in 1st gear to take off from a stand still. I'm not offended, but I'm not sure that the placebo comments are really applicable. It would be a different story if I came in here with something like "OMFG teh K&N drop-in roxors teh big one !!!1!1!!! JWT heat soak FTMFL !!!!! 11!!!1 I gained 72 HP and 4 thousand lb-ft of torque!"
In my opinion, whether it is the case or not, it does not seem 100% inconceivable that two very different intake filter configurations would result in differing throttle responses, which is possibly the difference that I felt. Who knows. In all of this I forgot to set up a controlled scientific experiment and instead posted some quick observations as objectively as possible.
In my opinion, whether it is the case or not, it does not seem 100% inconceivable that two very different intake filter configurations would result in differing throttle responses, which is possibly the difference that I felt. Who knows. In all of this I forgot to set up a controlled scientific experiment and instead posted some quick observations as objectively as possible.
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Originally Posted by 2006350zSA
i hear what both yall are saying and i agree. I have some input, i have jwt and stock. I ran the jwt for about 4 months and took it off now that its in the 100's. I was averaging about 25.6 miles to gallon ont he way to my school which is 95% highway. I put my stocker back on to see if i got less heat soak etc, and it doesnt seem like it runs any better. Also 3 days in a row no other driving then to school and back ive averaged 22.8 mpg. Coincidence im not sure but 3 miles to gallon is enough that this weekend im gonna switch back to the pop and see what happens.
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On my older 03 i'm ganna put the stock box back and see what happens. I do remember the JWT making it breath and rev a lot better over 5k. Guess i'll see what happens, i do here the popchanger helps the non rev-ups more than the rev-up cars.
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Originally Posted by eagletanggreen
Must be nice...22 miles a gallon
#20
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Originally Posted by eagletanggreen
Must be nice...22 miles a gallon
I think you've got the best of both worlds with that turbo - you can drive (if you have willpower) well out of boost and I bet get great highway mileage.
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