'96 Std. Cab Full-Size
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'96 Std. Cab Full-Size
Hello,
I've been searching for options on replacing the exhaust system on my 96 w/ an I6. The exhaust manifold looks fine but I really want to replace the midpipe with a catless version. Does anyone know of an aftermarket midpipe for my application?
I've been searching for options on replacing the exhaust system on my 96 w/ an I6. The exhaust manifold looks fine but I really want to replace the midpipe with a catless version. Does anyone know of an aftermarket midpipe for my application?
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Originally Posted by couleeman
Sketch it up and get the dimensions. Any muffler shop should be able to make you one.
It's strange how many aftermarket midpipes I find for the Mustang, yet none for my F150...
This I6 has two seperate tubes coming down, it'd be cool to see some aftermarket midpipes running dual. Then I could just bolt it up instead of taking the truck to a shop.
Thx for the comments
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From: Broken Arrow, OK
I think Walker makes a down pipe for the EFI manifolds. Beware exhaust mods on a 96. That was the first year of OBD2 and removing the cats causes computer problems. The computer can be fooled into thinking the cats are still there, but that doesn't mean there won't be other problems.
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From: Broken Arrow, OK
Some cars work fine with them, others don't. The sims will prevent the dreaded catalyst efficiency low code, but the signal they send back to the PCM is always the same. Typically this is about 450 mV. This is all fine and well, but the PCM is expecting some movement. I've had cars that had to have the PCM reprogrammed to quit throwing a slow response or not switching code. About 2 years ago at a shop I worked at we installed an exhaust system on an 01 Cobra with offroad pipes and sims. It threw several codes with the offroad pipes and sims in place, but none with cats and O2's. I don't remember what we ended up doing to it before it left, I wasn't the tech working on it. It is usually cheaper to buy a high flow cat and be done with it. Modern cats are not a significant restriction like older ones were. It is also possible, although rare, that a missing catalyst can screw up the signals from the upstream O2's and alter the fuel trims. Just because the SES light isn't on doesn't mean everything is working right.
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Originally Posted by Silver Streak
I think Walker makes a down pipe for the EFI manifolds. Beware exhaust mods on a 96. That was the first year of OBD2 and removing the cats causes computer problems. The computer can be fooled into thinking the cats are still there, but that doesn't mean there won't be other problems.
I've already got MIL eliminators installed on my F150 because my factory cats are clogged. I had the po420 code for about 3 years. I don't forsee any issues with running catless on this motor. My 99 Mustang Cobra acts fine. People said I'd have backpressure issues on my Mustang and miss the low end torque without cats. I don't miss anything! Plus I love the smell
I've heard of others with issues with MIL eliminators. Perhaps they installed them incorrectly? I don't see how they could cause issues. I know 1996 was the first year and they are considered the more sensative ECU's but like I already said I've got MIL eliminators working. Taking the cat's out won't change how this is currently working.
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I've got a '96, I had my whole exhaust removed, I had a Catco #9513 hi-flow cat installed in the pre-cat location, then the o2 sensor pretty much in the stock location after the pre-cat and then the air-hose installed a bit after that followed by a Gibson Super Truck exhaust, 2.5" pipe after the cat.
I've picked up 2 mpg and a dramatic increase in all around performance. And I have never had any problems with the engine light or the computer throwing codes.
I've picked up 2 mpg and a dramatic increase in all around performance. And I have never had any problems with the engine light or the computer throwing codes.
Last edited by SPROCKET; Apr 27, 2004 at 08:49 AM.
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Update
I purchased all the Walker Exhaust pieces. Pretty cool no cats & no muffler for like $110. I starting looking at things this past Saturday to do the install, of course I ran into a problem.
SMOG PUMP. Dangit the Walker Exhaust down-pipe doesn't have a opening for the air vent. After some more research I'm going to take the SMOG pump off. From what I can tell removing the SMOG pump & plugging the vacum lines won't throw any computer codes. I sure hope not!
I'll have to post the pics of the Walker exhaust pieces, looks cool
SMOG PUMP. Dangit the Walker Exhaust down-pipe doesn't have a opening for the air vent. After some more research I'm going to take the SMOG pump off. From what I can tell removing the SMOG pump & plugging the vacum lines won't throw any computer codes. I sure hope not!
I'll have to post the pics of the Walker exhaust pieces, looks cool
