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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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  #26  
Old 05-14-2008
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Originally Posted by fddriver02 View Post
It's all in your head dude. Trust me. You dyno it and it will show a loss of power

Agreed.

No offense countryboy, but the guys in here know about Rangers. You're not the first guy to do this (and sadly not the last either) and it doesnt work as well as expected. You've probably lost quite a bit of low end power. Which cat did you gut? all three? the last one?
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  #27  
Old 05-14-2008
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Originally Posted by SparkYZ View Post
Agreed.

No offense countryboy, but the guys in here know about Rangers. You're not the first guy to do this (and sadly not the last either) and it doesnt work as well as expected. You've probably lost quite a bit of low end power. Which cat did you gut? all three? the last one?
I think he has all three gutted.

When I pulled off my exhaust I thought it was way faster. I would drive around and think my truck was the fastest thing out there. Then I raced my buddy with a 06 4.0 2wd Sport. He kicked my a$$ so hard. Then I threw my pipe back on. I raced him again and he was just slightly even. The engine is too small of a displacement to actually make power by simply removing cats. Even with a full exhaust. There is not enough backpressure.
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  #28  
Old 05-14-2008
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Originally Posted by Green Hornet View Post
$1200? You can get a standard OEM replacment cat for 50 bucks or just get a high flow race cat for a little more while still remaining emmissions compliant.
https://www.ranger-forums.com/forum2...ing+cat&page=2

Read post #37 - ok how does $1000 sound..? I was talking about ALL OEM ford parts, since his truck is new. Also all aftermarket units arent emissions compliant like OEM.
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  #29  
Old 05-15-2008
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Originally Posted by fddriver02 View Post
I think he has all three gutted.

When I pulled off my exhaust I thought it was way faster. I would drive around and think my truck was the fastest thing out there. Then I raced my buddy with a 06 4.0 2wd Sport. He kicked my a$$ so hard. Then I threw my pipe back on. I raced him again and he was just slightly even. The engine is too small of a displacement to actually make power by simply removing cats. Even with a full exhaust. There is not enough backpressure.

Yeah, the exhaust (or lack thereof) just changes your power curve. On my 4.0 Mustang, when I went to a dual exhaust set up, I lost some low end, but gained quite a bit on the top end.
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  #30  
Old 05-18-2008
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lol ok i dont know why it bothers you guys so much...i mean it is myy truck. and honestly i think it sounds soo much better.il try to get a sound clip up tom. and for the loss of power i dunno maybe but i will say the throttle response deff is better. and i know that because we have 2 rangers in the family and i drove one right after the other.

i only had 2 cats and gutted them both
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  #31  
Old 05-18-2008
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So.. the ledgends of removing/gutting cats continues to this day.

Heres what I learned or had results from when I removed my single cat ( the one not on the y-pipe ).

Not only was there a cel light, but my fuel system tended to lean as well. I dropped 2/10ths at a local 8th mile track.. Someone mentioned something about GAINING power? Rubbish.

From all the B.S. posted here I think I'll sitback and laugh at the alledged ' experts ' on the subject, what do I know?

BTW, my mods are in my profile, it speaks for itself to all the ' experts '. Good luck with that Warrenty if this is on an 07 truck.

Cheers.
D.
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  #32  
Old 05-18-2008
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Originally Posted by D. View Post
So.. the ledgends of removing/gutting cats continues to this day.

Heres what I learned or had results from when I removed my single cat ( the one not on the y-pipe ).

Not only was there a cel light, but my fuel system tended to lean as well. I dropped 2/10ths at a local 8th mile track.. Someone mentioned something about GAINING power? Rubbish.

From all the B.S. posted here I think I'll sitback and laugh at the alledged ' experts ' on the subject, what do I know?

BTW, my mods are in my profile, it speaks for itself to all the ' experts '. Good luck with that Warrenty if this is on an 07 truck.

Cheers.
D.
Thank you. Someone that has tried it and can verify that you will not gain power.

These people don't understand how an engine works. They just go for a cool sound.
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  #33  
Old 05-18-2008
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Originally Posted by fddriver02 View Post
Thank you. Someone that has tried it and can verify that you will not gain power.

These people don't understand how an engine works. They just go for a cool sound.
If they want ' cool sound ' so be it. Some people still think they gain power with flomaster mufflers, yer those whom have tried all different kinda will state to the different.

I just can't see killing a warrenty on an 07 truck ' to be cool '.
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  #34  
Old 05-18-2008
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Originally Posted by countryboy fx4 View Post
lol ok i dont know why it bothers you guys so much...i mean it is myy truck.
Reason it bothers ME personally:

Yes, it is YOUR truck. But remember why those cats are there in the first place, for EMISSIONS. In other words you are now promoting air pollution which affects us ALL. The EPA mandates these things for a reason, in fact what you did is illegal, but hey it's YOUR truck... Just be glad you don't have to deal with emissions inspections annually. However I do believe law enforcement checks for these things from what i've heard. Good luck with it.
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  #35  
Old 05-19-2008
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Originally Posted by bwester04 View Post
However I do believe law enforcement checks for these things from what i've heard.
It just looks like a stock system if he gutted them, just no insides, so he would have to take his wrench/ratchet and take off the cat and then check it (way too much work for a cop to be interested in doing it). In FL, cops don't care. It'd be like someone actually getting a ticket for clear-corners (and those are visible), which never happens.
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  #36  
Old 05-19-2008
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Originally Posted by Oh5Edge View Post
It just looks like a stock system if he gutted them, just no insides, so he would have to take his wrench/ratchet and take off the cat and then check it (way too much work for a cop to be interested in doing it). In FL, cops don't care. It'd be like someone actually getting a ticket for clear-corners (and those are visible), which never happens.

exactly...the cops here wouldnt give two ****s about it...my buddy has an old 1500 with a 350 crate motor and straight pipes on it...not once has he gotten pulled over for it...which all my buddies trucks are catless and so is our 69 mustang..i did not notice any loss in power..so if i didnt notice it than it obviously wasnt enough to matter...if i wanted to go out and race id take the 07 or the 69 mustang out. and as far as polluting the air..seriously?
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