Header choice
Senior User
Joined: Jun 2000
Posts: 134
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From: Fayetteville, NC
Header choice
Morning all. I have a '94 F150 w/5.0. Does anyone know of any performance difference between shorty headers versus equal length tube headers? Looking for more low-end torque. Any recommendations on a manufacturer? I'm also looking at replacing the stock y-pipe with an aftermarket, but was concerned that the "needed" back pressure might be reduced too much. Comments? Last question, does anyone have any experience with replacing the MAF sensor with an aftermarket model? Thanks!
Bert
Bert
Senior User
Joined: Aug 1999
Posts: 343
Likes: 0
Header choice
>Does
>anyone know of any performance
>difference between shorty headers versus
>equal length tube headers?
Equal length headers will improve scavenging effects, but if they are of the 4-1 type could reduce low-end torque. Look for a 4-2-1 model instead.
>Looking for more low-end torque.
> Any recommendations on a
>manufacturer?
I've heard Doug Thorey recommended here before.
>I'm also looking
>at replacing the stock y-pipe
>with an aftermarket, but was
>concerned that the "needed" back
>pressure might be reduced too
>much.
If you are just replacing the y-pipe and keeping the cats, then the backpressure will be fine. If you use an aftermarket y-pipe with an aftermarket cat, the truck will have better high-rpm response. At least mine does, and I have an aftermarket y-pipe with a 3" cat.
>question, does anyone have any
>experience with replacing the MAF
>sensor with an aftermarket model?
Not me, my truck is speed density so it uses the MAP and doesn't have a MAF. Someone else would have to talk to this one.
Randy
>anyone know of any performance
>difference between shorty headers versus
>equal length tube headers?
Equal length headers will improve scavenging effects, but if they are of the 4-1 type could reduce low-end torque. Look for a 4-2-1 model instead.
>Looking for more low-end torque.
> Any recommendations on a
>manufacturer?
I've heard Doug Thorey recommended here before.
>I'm also looking
>at replacing the stock y-pipe
>with an aftermarket, but was
>concerned that the "needed" back
>pressure might be reduced too
>much.
If you are just replacing the y-pipe and keeping the cats, then the backpressure will be fine. If you use an aftermarket y-pipe with an aftermarket cat, the truck will have better high-rpm response. At least mine does, and I have an aftermarket y-pipe with a 3" cat.
>question, does anyone have any
>experience with replacing the MAF
>sensor with an aftermarket model?
Not me, my truck is speed density so it uses the MAP and doesn't have a MAF. Someone else would have to talk to this one.
Randy
