Will this increase HP? also Gas mileage thanks for opinions.

 

No, but you must prepare for a barrage of insults and opinions regarding this.

Just put the muffler on and enjoy

 

Not to worried about insults. Alot from around here have them off?

 

Also another question about a 8 bar behind back window sick of the thought of throwing my 4wheeler in to hard and busting a window anyone have any suggestions?

 

I took of the last cat and ran a flowmaster Original 40 series 3" inlet 2.5" dual outlet sounds good to me and about 500,000 people on youtube check out the vid in the drivetrain page. you take off all the cats you will loose too much back pressure and the mpg's will suffer

 

totally false. as long as the exhaust system is well designed so that scavenging of the exhaust gas is maintained bp is a nonfactor.

 

explain that in stoopid ppl terms for me please?!!

 

i have no cats and a 50 series and i really like it, a 40 series with no cats can be a little too raspy with too much drone

 

Very good.

Actually backpressure SHOULD be minimized, but you want to keep the flow fast. Backpressure usually increases flow so it is a double edged sword.

 

Well I'm not just taking them off with out a new o2 censor without that the whole computer from fuel will **** up. it wont be to rich or to lean.

 

No. The fuel trims will NOT change. The truck doesn't care if there are cats or not, it only wants to see a difference in the two 02 sensor readings for emissions. The first ones do the fuel trims, the last one just wants to see a difference.

Use a de-fouler. You can buy them at most autoparts store. I think its 18mm. Buy two of them, drill the inside of one out to fit the 02 sensor tip in, and bolt them both together, and then put the entire assembly into the exhaust pipe. Search on google, there are several how-to's.

 

Very good grasshoppah..

Don't give an 8 year old matches to play with...

 

haha wow brings back memories. If you do break it, you can always get plexi glass!

 

All right all done 40 series no cats. everything checks out sounds great, a bit to raspy so gonna get a glasspack but other than love it do feel a bit more power though not gonna lie.

 

you more than likely have less power

 

ummm maybe dont RIDE it into the bed lol. jk. i do it too. theres some nice headache racks available...

lol and just a few weeks ago i saw a guy with a BRAND new f250 do just this....not gonna lie i laughed. but i was extra careful on the throttle when i was loading up after seeing that :)

 

Video?

 

No There's no less power. How is that even possible?

 

You don't understand exhaust design, and you didn't measure before/after yet your saying "no there's no less power"...

 

You think i just went underneath and started cutting away? its the same exact line 2.5 inches to the headers.

 

And NO THERE IS NO LESS POWER LOL

 

wowzers

 

How would you know - you haven't measured anything.

 

Video

View My Video

 

Hmmmmmmm raspy as ****...