greenxj21

Hmmmm I thought the 40 was louder than the 44?

johnydoe

i got this headers when i bought my last jeep, i been debating on weather or not to instal them or sell them...

whats the big diff between these and stock? will i gain a big HP?

iyzak the xj

agreed

iyzak the xj

ive bought ebay headers before ,for a ford 302 not jeep, and have a few friends that have too, the only problem normally you can look down the primary tubes and up the collector and see there not well made, tone of extra material in the way of the flow, me personally i'd save for another paycheck and put out $50-100 more for a quality part

and one pair of headers was a living nightmare bolt holes didn't even line up lol however that problem was solved and seller was nice about it i hope you don't run into that lol stuck without a vehicle for a few days unless you want to use another gasket and the tire to put everything back otogether to only to take it apart in a few days

Edit:
also not sure if they do but the "summit racing" name brand is really pacesetter, my last pair came with a pacesetter tag stamped to it lol, for my bronco, so you can save about $25-50 buying summit instead

iyzak the xj

nvm didn't realize i was about to step into a thing we don't talk about doing on this site

Stitch

Had a muffler installed today on my Jeep. Problem is it wasn't the muffle I wanted installed. I was choosing between the Flowmaster 40 and super or a Magnaflow. But instead I picked the Jeep up after hours and they had installed a Dynomax.

Should I have them remove the welded Dynomax muffler and replace it with the muffler I told them to put on the vehicle which was the Magnaflow?

Thanks!

partsguyct

If its not what you paid for you should

Slick 99 XJ

Are Flowtech Red Hot Mufflers any good to put on a Stock 99 XJ? Been looking up videos all day to get an idea of what they sound like but cant quite decide.

99superjeep01

Agreed.

Stitch

Shop said they made a mistake and will remove the muffler and replace it with the Magnaflow muffler. I have a chance to put on the Flowmaster Delta 40.

Looking for a nice rumble sound and good acceleration sound.

Magnaflow does the sound equal the Delta 40?

Thanks

JWB37

The FM40 will be louder.

Stitch

I would describe the Dynomax a solid sound with slightly better rumble than the stock OEM muffler. How much louder will the Magnaflow be?

Is it also safe to say the Flowmaster is on the extreme side of being louder than the Dynomax?

XJJeff

What is the inlet/outlet dimensions of 3 bolt flange that connects from the downpipe to the catalytic converter. It looks like a rounded triangle, it is connected from the exhaust pipe/downpipe to the catalytic converter. I have a picture of it circled and what it sorta looks like. If anyone could link me the flange that would be helpful I don't need the cat, I just need to know the outlet/inlet size thanks. This is for a 2001 Jeep XJ

Crazy Amos

I can give it to you in the morning.

XJJeff

Its a 2.25 inlet/outlet for 2000/2001 that is what I found out.