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Charge Pipes
- Thread starter F=MA
- Start date
correct, but the cold side charge pipes do not come with the fenfab intake kit. they are extra. i do know some guys who have changed out the charge pipe for an aftermarket unit or custom fabbed unit without doing an intake. it remains to be seen i think if the aftermarket charge pipes will fit with the AFE unit. i personally did the charge pipe because it seemed so strange to have all this extra intake volume and a huge intercooler all run to a tiny crimped bend before going to the silicone throttle body intake tube. may not do much, but it helped peace of mind.
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Hey zdubyadubya hope you are well. Came across this post today while researching charge pipes. Have a WIC and will be tuning soon. Wondered what your impression of your cold side charge pipe is now that you have some time on it? I have the same concern you did about choking down the air flow post IC. Thanks.
Yea…that one. I actually cut mine in half and measured the cross section where it’s flattened then measured the FenFab pipe and oem pipe inlets.
This is in square inches.
OEM inlet area 3.98
FenFab inlet area 4.43
OEM pipe flattened area 3.41
Both neck down at the TB connection…I don’t think I measured that spot.
This is in square inches.
OEM inlet area 3.98
FenFab inlet area 4.43
OEM pipe flattened area 3.41
Both neck down at the TB connection…I don’t think I measured that spot.
Calculating 3.41 sq in to sq mm equals about a 52mm internal diameter in circular diameter which would be around 430 cfm. If anyone read my throttle body thread:
https://www.explorerst.org/threads/throttle-bodies-cfm-and-mass-airflow.3163/post-39192
Enough for our engines, but marginal, especially since the flattened part is transverse to the curve. I'd have to say the FenFab charge pipe might actually be a nice little upgrade! One caveat- if the necked down portion leading to the throttle body is less than a 52mm ID, it's probably not worth it.
https://www.explorerst.org/threads/throttle-bodies-cfm-and-mass-airflow.3163/post-39192
Enough for our engines, but marginal, especially since the flattened part is transverse to the curve. I'd have to say the FenFab charge pipe might actually be a nice little upgrade! One caveat- if the necked down portion leading to the throttle body is less than a 52mm ID, it's probably not worth it.
As alluded to by both @TMac and @UNBROKEN , I did some measuring and did some refinements to my tune post charge pipe install--since I made my own, I definitely think the upgrade was worth it. I tried to use even smaller radii than FenFab and used bigger diameter tubing as well. knowing what little i do about fluid dynamics there was no way the stock pipe was conducive to airflow.
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Yup. Side by side with the FenFab unit is obvious who is the professional welder and who isn't but I'm still pretty proud of it. No kit, just pieces of 2.75" 16Ga aluminum tubing.
I didn't look, but my calipers read an OD of ~ 2.75" (and the same piece of silicone fits just as snugly on my tubing as the intercooler) --assuming 16Ga or 14Ga wall thickness should give you the numbers you are after. My piping was 16Ga, 2.75". Thanks for the compliment! I didn't want to use the existing plastic flex pipe--I knew I wanted something that went all the way up to the throttle body so I knew I had to do it myself.
Thanks! No problem.
I didn't look, but my calipers read an OD of ~ 2.75" (and the same piece of silicone fits just as snugly on my tubing as the intercooler) --assuming 16Ga or 14Ga wall thickness should give you the numbers you are after. My piping was 16Ga, 2.75". Thanks for the compliment! I didn't want to use the existing plastic flex pipe--I knew I wanted something that went all the way up to the throttle body so I knew I had to do it myself.
Thanks! No problem.
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I doubt there is any significant difference. I believe it was first design for Kevin who is obviously trying to squeeze ever pony out of the block possible. I plan to buy it but out of all the upgrades you can do I would think it has one of the smallest impacts on performance. I think it’s mostly for dressing up the engine bay with just a touch of performance.
I ordered one up from FenFab last week. When it comes, I’ll do datalog right before I put it and the AFE intake and then another after.
I’m really not anticipating much, but it would be nice to see if there is any improvement in airflow (#’s/min) more than anything else. Probably do a dragy comparison at the same time.
Sent from my iPhone using Tapatalk
I’m really not anticipating much, but it would be nice to see if there is any improvement in airflow (#’s/min) more than anything else. Probably do a dragy comparison at the same time.
Sent from my iPhone using Tapatalk
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