This might be a NEW JWT Popcharger question... I Think. :)
#1
This might be a NEW JWT Popcharger question... I Think. :)
Hello all, I'm pretty new to this forum so please don't chop my head off if this is a question you've already address please. I tried the search feature first... Honest.
Anywho. I just purchase my 2005 350z about a week ago, and I have to say that before I bought my Z I had a complete wish list of mods I had been thinking I was going to slap into this thing... That is... Until I really got to drive it. To be perfectly honest. I was so impressed with the performance of the car I decided to keep NA instead of getting the super charger right away and enjoy it for what nissan designed it to be.
The thing that I loved the most is the torque curve on this motor. It completely blew my mind how much pull was left in the middle of 6th just by giving it more gas. Now please bare in mind that this is not my first Z. I use to own a 1993 300zx TT back in the day. And yes, that car use to pull too but, it was to be expected from a TT.
Bottom line: I LOVE the Torque on this motor.
I decided to go ahead and purchase an intake system thinking that "more air couldn't hurt anything" and decided on the JWT Popcharger that everyone here seem to swear by. Ya know... With so many members here so pressed on Horse Power(Because HP sells parts), does anyone have any real dyno results showing Torque numbers on this intake system? My Butt-dyno seems to indicate a huge drop in torque over the stock air box. But it sounds really nasty at WOT! Any clues anyone?
Detailed answers please. Thanks.
Anywho. I just purchase my 2005 350z about a week ago, and I have to say that before I bought my Z I had a complete wish list of mods I had been thinking I was going to slap into this thing... That is... Until I really got to drive it. To be perfectly honest. I was so impressed with the performance of the car I decided to keep NA instead of getting the super charger right away and enjoy it for what nissan designed it to be.
The thing that I loved the most is the torque curve on this motor. It completely blew my mind how much pull was left in the middle of 6th just by giving it more gas. Now please bare in mind that this is not my first Z. I use to own a 1993 300zx TT back in the day. And yes, that car use to pull too but, it was to be expected from a TT.
Bottom line: I LOVE the Torque on this motor.
I decided to go ahead and purchase an intake system thinking that "more air couldn't hurt anything" and decided on the JWT Popcharger that everyone here seem to swear by. Ya know... With so many members here so pressed on Horse Power(Because HP sells parts), does anyone have any real dyno results showing Torque numbers on this intake system? My Butt-dyno seems to indicate a huge drop in torque over the stock air box. But it sounds really nasty at WOT! Any clues anyone?
Detailed answers please. Thanks.
#2
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The problem with the dyno would be that the air would be stagnant or at the most, blown by a fan. And that doesnt accurately represent the air moving thru the engine bay at say 45-65 mph. So the dyno numbers are always arguable with intakes.
I personally would recommend and cola-air intake over the JWT and an intake plenum spacer.
I personally would recommend and cola-air intake over the JWT and an intake plenum spacer.
#3
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“My Butt-dyno seems to indicate a huge drop in torque”
Then thousands of pop charger drivers made the wrong decision.
Most drivers are looking for peak torque gains: the pop charger does that. What may have happens is that the pop charger altered the torque curve. If you trust your “butt dyno,” this may have been what has happened.
Then thousands of pop charger drivers made the wrong decision.
Most drivers are looking for peak torque gains: the pop charger does that. What may have happens is that the pop charger altered the torque curve. If you trust your “butt dyno,” this may have been what has happened.
#4
Originally Posted by davidv
“My Butt-dyno seems to indicate a huge drop in torque”
Then thousands of pop charger drivers made the wrong decision.
Most drivers are looking for peak torque gains: the pop charger does that. What may have happens is that the pop charger altered the torque curve. If you trust your “butt dyno,” this may have been what has happened.
Then thousands of pop charger drivers made the wrong decision.
Most drivers are looking for peak torque gains: the pop charger does that. What may have happens is that the pop charger altered the torque curve. If you trust your “butt dyno,” this may have been what has happened.
I don't always trust my "butt-dyno" cuz sometimes it's full of ****. But it's all I got to work with until someone can show me something different.
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I've heard that hp increases at peak with the item, but torque is a little less and comes in a little later now. Either way, we're talkin 5ft-lbs max, so no, you won't feel that. The difference with or without the pop charger is most likely negligable. Its a sound mod, not a performance one.
#7
Originally Posted by Jetpilot718
I've heard that hp increases at peak with the item, but torque is a little less and comes in a little later now. Either way, we're talkin 5ft-lbs max, so no, you won't feel that. The difference with or without the pop charger is most likely negligable. Its a sound mod, not a performance one.
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#9
Originally Posted by undrgnd
I did the K&N filtercharger replacement element. It sounds better, looks stock, runs great, and it was much cheaper than the popcharger. IMO a lot of people do mods just for the sake of doing mods, even though the benefits are questionable or unproven at best.
#10
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Originally Posted by Havok_RLS2
Good Post. Thanks. So pretty much I should just go back to the stock airbox unless I have a real need to have a great sounding car at WOT? Would that be about right?
#11
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I just installed the jwt, and completely love this ****. I can feel a little difference when stepping on the gas, the pedal feels lighter. But there is definately an awesome sound when WOT.
#12
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Originally Posted by davidv
No. Lets assume that you are correct, the pop charger lost peak torque. Adding another mod (such as a cat back exhaust) may restore peak torque - then some.
#13
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The pop charger as a first mod is relatively worthless imo. Your ramming more air into a clogged path. You need to losen up some backend pressure before you can have more breathing gains. Get an exhaust or hi-flow cats then with the pop charger combo that is where you will see more gains. Im installing my pop charger on tuesday so i will let you know how it goes. I have a nismo exhaust also.
The reason i purchased the charger now is that i have soot on my exhaust alot so i know im running rich. Hopefully the charger will eliminate the surplus richness and add more power but actually losing torque really doesnt make sense unless your already running lean to begin with.
The reason i purchased the charger now is that i have soot on my exhaust alot so i know im running rich. Hopefully the charger will eliminate the surplus richness and add more power but actually losing torque really doesnt make sense unless your already running lean to begin with.
#14
Originally Posted by gatti-man
The pop charger as a first mod is relatively worthless imo. Your ramming more air into a clogged path. You need to losen up some backend pressure before you can have more breathing gains. Get an exhaust or hi-flow cats then with the pop charger combo that is where you will see more gains. Im installing my pop charger on tuesday so i will let you know how it goes. I have a nismo exhaust also.
The reason i purchased the charger now is that i have soot on my exhaust alot so i know im running rich. Hopefully the charger will eliminate the surplus richness and add more power but actually losing torque really doesnt make sense unless your already running lean to begin with.
The reason i purchased the charger now is that i have soot on my exhaust alot so i know im running rich. Hopefully the charger will eliminate the surplus richness and add more power but actually losing torque really doesnt make sense unless your already running lean to begin with.
#15
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Originally Posted by gatti-man
The pop charger as a first mod is relatively worthless imo. Your ramming more air into a clogged path. You need to losen up some backend pressure before you can have more breathing gains. Get an exhaust or hi-flow cats then with the pop charger combo that is where you will see more gains. Im installing my pop charger on tuesday so i will let you know how it goes. I have a nismo exhaust also.
The reason i purchased the charger now is that i have soot on my exhaust alot so i know im running rich. Hopefully the charger will eliminate the surplus richness and add more power but actually losing torque really doesnt make sense unless your already running lean to begin with.
The reason i purchased the charger now is that i have soot on my exhaust alot so i know im running rich. Hopefully the charger will eliminate the surplus richness and add more power but actually losing torque really doesnt make sense unless your already running lean to begin with.
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gatti-man, adding a pop charger won't lean out your a/f, simply because yes you're letting in more air, but the MAF is also reading more air and thus tells the ecu to dump more fuel to compensate
#17
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Originally Posted by diwun67
gatti-man, adding a pop charger won't lean out your a/f, simply because yes you're letting in more air, but the MAF is also reading more air and thus tells the ecu to dump more fuel to compensate
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ECU's do not make adjustments to air fuel ratios at WOT. That is why with "breathing mods" There is very little room for HP gains with out ecu remaps. In fact if you free the flow with breathing mods ie Intake plenums headers cats exhaust. You most likely will run lean. To lean and the engine will misfire or detonate causing a loss in HP. (The ecu will make adjustments to timing)
#19
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Originally Posted by aforst
ECU's do not make adjustments to air fuel ratios at WOT. That is why with "breathing mods" There is very little room for HP gains with out ecu remaps. In fact if you free the flow with breathing mods ie Intake plenums headers cats exhaust. You most likely will run lean. To lean and the engine will misfire or detonate causing a loss in HP. (The ecu will make adjustments to timing)
#20
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Ok installed the pop charger and a seibon hood today. My first impressions were this "Ugh did i even do anything?" The sound is the same the power is the same. After driving it for about thirty minutes I noticed two things had changed. 1) My power band is smoother. Normally under WOT the power band would have dips that i could feel just for a slpit second. Those are now gone it pulls smooth but not stronger imo. 2) My nismo exhaust is louder, by about 15%. So a light drone now becomes a drone i actually can here over my stereo. In short this mod may not be a keeper. I will let it stay on for a month or so but im really not impressed. Seems like a $100 improvement (not much) to me unless this mod does better on an unmodified 350Z.