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no cats
Ok....does anyone have a f-150...straight six engine...with both cats cut off?
If so...does anybody have a flowmaster 40 series on it?..wut about a glasspack?
If anybody does please tell me how it sounds
If so...does anybody have a flowmaster 40 series on it?..wut about a glasspack?
If anybody does please tell me how it sounds
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Originally Posted by badass_f-150
Ok....does anyone have a f-150...straight six engine...with both cats cut off?
Originally Posted by badass_f-150
If so...does anybody have a flowmaster 40 series on it?..wut about a glasspack?
If anybody does please tell me how it sounds
If anybody does please tell me how it sounds
www.exhaustsoundclips.com has a couple flowmaster equipped inline 6's for you to listen too.
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From: Bored town OH
I want to replace both my factory cats with a new one, since they are probobly clogged with a bunch of crap. I'll let a exhaust shop do that, (I hate doing exhaust work, get too much crap in my eyes 
) as well as replace my flex-pipe, Im never using that crap again, after a few weeks it was rusted out.
) as well as replace my flex-pipe, Im never using that crap again, after a few weeks it was rusted out.
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From: Timmins,Ontario,Canada
It sounds good but not if the muffler shop ***** it up, and you get an annoying ticking noise and vibration. Make sure they dont benf the egr tube too much of changing the y pipe further upstream that the extra backpressure goes up your egr tube, and if its cracked it really makes one hell of a noise. My truck got molested that way and I regret spending the $850 on that. Just punch the thing out and get a simulator for your oxygen sensor so you dont get a check engine light and keep it from closed loop mode, then yor money will be in the gastank.
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I have a 1993 F150 I6 and I cutoff both of the catalytic converts and the muffler that was on it. Now I have nothing and it's coming off of the two pipes right under the passenger seat. I'm going to run duals out of there, right off those two pipes.
Anyone know how that would sound w/no mufflers?
Anyone know how that would sound w/no mufflers?
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I wanted to take the cat out of my truck, but in the 96, there are 2 O2 sensors, one infront of the cat, and one behind, so I had to go the route of a hi-flow cat instead. Put on 3" and a flowmaster 50 delta and it sounds pretty good.
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Maybe some one can answer this for me i have a 94, and the exhuast is about shot from the rear of the muffler back. I have debated about cutting/ gutting the cats. Sound is not what i am after, but in taking/ gutting them will my check light stay on? also if i went with a hight flow would this cause the check light? I have a frend to put a high flow on a neon and the light stays on. emissions i am not worred about. also I hate to runine two good cats because i could move and then have to worry about emsissions. so if i find a junk yard set and hollow what will this do to my light? what will a high flow cat do? my light and air/ gas mix is what I am concerned about. thanks
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From: Timmins,Ontario,Canada
Yes, I think your check engine light would come on, and your fuel ratio would also change. There is some good explanations on that in the thread "smog items" posted back in september, in this forum. I hear you can get a simulator for the second sensor, that being the pcm picks up signals from that oxygen sensor and componsates the right air fuel ratio to produce the ideal fuel air ratio. Without it i think it runs in default mode, but the system still needs that to produce the right fuel mixture. I think you can "beat the computer" by adjusting your timing, to get good power and better effeciency.If you put in a egr restictor plate in you can richen the mixture that way also.
Last edited by beatupford; Oct 31, 2005 at 06:58 PM.
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Originally Posted by Motorhead351
If its a non california vehicle aka speed density, then no the check engine light will not come on if you remove the cat(s), the O2 sensor is before the catalytic converter(s).
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If its speed density, removal of the cat(s), should have no negative effects on the air/fuel ratio.
With that said, there is little to gain by removing a catalytic converter thats in good condition.
With that said, there is little to gain by removing a catalytic converter thats in good condition.
Last edited by Motorhead351; Oct 31, 2005 at 07:48 PM.