ok i plan to get a RMR intake along with a new exaust, i plan to get two carsound 2.25 hight flow catalytic conveters, 2.25 pipe and heres the thing my friend is going to give me his magna flows but takes a 3 inch pipe, so heres my question is there an adapter for this and if so will i still get back pressure? is this a bad set up?

 

someone correct me if im wrong, but 3 inch piping is usually used for turbo setups. us NA people usually use just 2.25 or 2.5 piping. im not an 'engine tech' but i do believe that you will lose some low-end power because of the back pressure lost..

 

i want to know if theres a 2.25 pipe to a 3inch so i can attach the 2.25 pipe into the 3inch muffler, and if its a bad set up

 

That will be very bad for a NA Lancer. You want MAX 2.5"
3" will kill you until you get to like 3rd gear at 4500 RPM (just a guess)

 

no, it will be fine he says he's getting a 2.25" exhaust all the way till the high flow which he will make an adapter to fit to the 3 inch then out the other end as 2.25" again. So its perfectly fine to me.

ie:

===2.25"===[HIGH FLOW]====[Muffler]==[TIP]
^3"inch adapter
lol something like that

 

Ah , maybe I should read better. That doesn't sound all too bad. I thought you were doing a 3" with 2.25" cats. I am just wondering what kinda adaptor you could use ??

 

im sure any muffler shop could do it right? I dunno..

 

====2.25===highflow======muffler==tip
...............................................^
...............................................3in ch adapter

nevermind the periods i had to add those in for the diagram to work right thanks for helping guys!

 

yea man go to a muffler shop, they'll weld, probably better than a makeshift adapter, won't be expensive either, setup looks fine

p.s. i don't even think its wise for a turboed lancer to go 3", no one is really pushing high enough horsepower to make any worthy gains, except maybe boe.

 

get it welded, dont mess around with ghetto adaptors.

 

For like $5 you can get an adapter at most any autopart store, and be ready for a real raspy sound. But all in all it should be pretty good along the power lines.