If I where to gut the cat on a 97 F250 with a 351 what permance benifits might I expect to see? Will it afect the air/fuel mixture? I plan on leaving the stoke O2 senser in place if possable. Thanks
By looking at your sig, appears you've pretty much done all the inexpensive mods.
From here your looking at induction changes (super, turbo, nitrous) and cubic inch changes. HP = $$$
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1999.5 F-250 V10 XLT 4x4 Super Cab Oxford White - No K&N, No chip, No 3rd party exhaust. Just the way Ford wanted it. (Yes, I run classic Firestones too!) +++ The Sierra Club want's you and your evil fossil burning equipment OFF ALL PUBLIC LANDS! Pay attention!
Yesdear, Flowmaster makes a Y-pipe perfect for doing this. It eliminates the cat completely but the O2 sensor remains in the stock location. While you're at it get rid of the associated metal piping going to the air pump and the pump itself along with other related components. You might as well upgrade the muffler while you're under there too. The Flowmaster piece is a weld in unit. The truck will feel snappier after doing this. -ibuytoys
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'89 F-250 XLT IDI Pickup
'92 F-450 XLT w/'97 PSD, 6-sp trans and intercooler w/ Century 412/F6000.
'92 F-450 XLT IDI w/ Century 412/F1
'94 F-350 CC XLT IDI Turbo Dually Pickup (SOLD)
'94 F-450 XLT IDI Turbo w/ Century 412/F1. (SOLD)
'01 F-550 CC XLT PSD 6-sp 4x4 w/ Century 502/F6000.
"The impossible just takes a little longer!"
Just the typical filter, exhaust, and chip. Don't expect too much. These engines are not like the PSDs in which you can add a chip and get 50+ HP more. Most claim they saw not much of an improvement over stock, and have to run premium gas to boot. A blower on the other hand, now that might be exiting.
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