What can I do to my 99 xj I'm sick of my stock exhaust and want to make It louder what can I do to it without losing the back pressure.

 

Flowmaster 10 series

 

My friend had his BMW 3 series straight piped and it's not obnoxiously loud, but it's a nice low sound that can be heard and appreciated. Would I get the same results if I straight piped my '00 XJ?

 

Don't run straights. Go for flowmaster 44 if you don't want to loud. But if u want to intimidate everyone around you go for flowmaster 10 those are crazyi want to get one for my self.

 

I run a 44 and Its my dd. It's not to loud and its got a good tone

 

Just got my super 44 put on last week and i love the sound. Its not too loud but still loud enough for people to notice which i like

 

Where can I get a super 44, and how do I know which one will fit?

 

Flowmaster Super 40.

 

a muffler shop on Line or AutoZone. You will need the center inlet and ofset outlet and both ends need to measure 2.25 not 2.5

 

If you want a good setup that will add a performance gain, I HIGHLY HIGHLY suggest going through the vendor Mudfrog. I bought my Flowmaster Super 44 and high flow cat from him (although you may want to avoid the cat... I dunno if your 99 has the dual cat setup and is all touchy about swapping anything). I also bought his 2.5" mandrel bent pipe. I LOVE THE SETUP. Great tone, no rasp, feel the difference especially with a bored throttle body (if interested, hit up thexjfiles. I bought one from him, top notch stuff.)

My $0.02 lol.

 

Back pressure is bad, you don't want any.

 

Thanks to every one with the info I'm go look at the 10 series

 

The 10 is loud loud . Close to straight pipes. With cat on keep it on

 

Iv figured out that the 50 series is best for me its not loud loud but u know im there... the next thing i need to find out is if i can make my own cold air intake on my 99 xj im not spending 100+ if i canmake it myself. If anyone help id apprecaite i think i have the air sensor so i cant make my own but im not sure.

 

Yes go to lowes buy some 3in pipe and buy An air filter from AutoZone and marry the two together and stuff it in you stock air box. I will post a pics for u tomorrow