what kinda of down pipes do yall use?

 

thunderfabrications 3" dp/mp.

its pretty damn loud

 

rb downpipe 3"

 

Racing beat 3.15in dp

 

where and how much???

 

www.racingbeat.com

 

Bonez 2.5" DP into 2.5" piping...... Paid 110 for the DP used from a forum member.

 

Bonez 2.5

 

u better make sure u back compressions if u dont BOOM ur turbo is gone thats what happen to my friend

 

Did your friend also suffer the inability to make sense?

 

I have a questions.
1. are the s4 engines auxillary ports activated by back pressure?
2. if so what is the biggest downpipe you could posiblly use before you affect you auxillary ports?

 

Your talking n/a right? S4's, work off back pressure yes..if your still running a cat you should have no problems opening your ports.

 

3'' thunderfabrications

it's not loud you babies

 

is there any way other than wiring the ports open to have them open with a pipe?
ive got gutted cats, but i did the paperclip test and they are opening now....

 

I paid 105 for my 3in new

 

Is there anyway i can remove the cats, and still run a fairly large DP without wiring the ports open on my S4 N/A? time for some more searching through countless threads

 

 

Sometimes they will fully open even with a header and a cat replacement pipe, and sometimes they only open half way, sometimes they just dont open. Its a gamble on whats going to happen.

Tyler: get a header and not a downpipe. Contact admin@fc3s.org and see if hes doing another group buy. If not, they still have kick *** prices.