JWT Popcharger - Sluggish down low?
JWT Popcharger - Sluggish down low?
The JWT Popcharger/Z tube combo feels sluggish at low rpms in comparison to the stock airbox. Anyone else feel this way? I think I'll put the stock airbox back on this weekend for further comparison.
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Joined: Dec 2003
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From: Marietta, Georgia
Re: JWT Popcharger - Sluggish down low?
If there is little air flow down low, there is no restriction there fore no improvement. Oem system are all designed to create no more than 1% restriction at the torque peak rpm.
214 cubic inches /2=[107] .....that x rpm x VE]/1728= air flow in CFM.....thus max air flow 260 CFM at say 4400 rpm......maybe 300 CFM at redline and maybe 30 CFM at 60 mph cruise........7-8 CFM at idle.
The cylinders can never be more than 100% filled by atmospheric pressure.
Many times oem air box and intake are designed to eek out that last fraction of a MPG at 55-60 mph to help CAFE numbers.
When you change things in front of the MAF, the calibration is usually affected.......sometimes good sometimes bad.
214 cubic inches /2=[107] .....that x rpm x VE]/1728= air flow in CFM.....thus max air flow 260 CFM at say 4400 rpm......maybe 300 CFM at redline and maybe 30 CFM at 60 mph cruise........7-8 CFM at idle.
The cylinders can never be more than 100% filled by atmospheric pressure.
Many times oem air box and intake are designed to eek out that last fraction of a MPG at 55-60 mph to help CAFE numbers.
When you change things in front of the MAF, the calibration is usually affected.......sometimes good sometimes bad.
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