ok so i about to do my 1st i/e/h on my 07 si. this is what i geting.

Injen Cold Air Intake for 06 Civic SI - $250
Comptech Shorty Headder 06+ SI - $530
AJP 3" Cat-Back Exhaust 06 Civic - $600.
Then reflashing.

Geting it all from http://www.ajperformance.com.

this is my 1st time so i dont now much about brands and crap. any feed back would help. placing the order one the 1st when i get payed.

 

sounds like a good combination. although i think 3 inch may be a little too big for an n/a car. 2.5 inch piping should suffice. other then that your golden.

lets see what thee Si owners have to say

 

Injen cai is a great choice but alot of people have had shady experience's with AJP and no 3'' is not 2 much the k series needs and loves big piping to get any real gains. I run the skunk2 70mm which is like 2.7'' piping and it offers gains and is the best for the SI besides the AJP 3''. I would not go with the comptech shorty it will offer no gains for that price save a bit more and get the buddy club race header trust me you wont regret it. The reflash will compliment these mods very well you will def be pushing at least high 190's or cracking 200 with these mods good luck

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bourgeoisx &raquo;</TD></TR><TR><TD CLASS="quote">Injen Cold Air Intake for 06 Civic SI - $250
Comptech Shorty Headder 06+ SI - $530
AJP 3" Cat-Back Exhaust 06 Civic - $600.
Then reflashing.
</TD></TR></TABLE>if i owned an si
this would be very similar to what i would get
instead of the shorty header would be a raceheader
and instead of the 3" exhaust, i would tone it down alittle bit or keep it stock

 

ok ok so better to switch to dc raceingheaders? and i am geting slamed about my exhaust on my other forum. everyone seem to think 3 to big so i will go with something smaller. "If ur keeping ur car N/A the 3" exhaust is to big and what about a downpipe. R u going to have a cat or a testpipe figure this out " can someone explane? would ask on the other forum but dont feel like geting my head riped off again.

anyway one other the guys offered.
skunk2 70mm $489-shipped
dc race header $395-shipped

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bourgeoisx &raquo;</TD></TR><TR><TD CLASS="quote">ok ok so better to switch to dc raceingheaders? and i am geting slamed about my exhaust on my other forum. everyone seem to think 3 to big so i will go with something smaller. "If ur keeping ur car N/A the 3" exhaust is to big and what about a downpipe. R u going to have a cat or a testpipe figure this out " can someone explane? would ask on the other forum but dont feel like geting my head riped off again.

anyway one other the guys offered.
skunk2 70mm $489-shipped
dc race header $395-shipped</TD></TR></TABLE>


Dc race header is the best " FOR THE MONEY" you can get. ( for gains )

Catback PERSONALLY i'd look for a used setup, i sold my 70mm skunk2 for 300 bux

As for the intake i'd hold off for the Password Power chamber ( coming out soon )

 

I don't know who is telling you 3'' is 2 big for the k series it is a fact it loves big piping a freind is running a 3'' pipe to the stock muffler.DC header,Fugita sri,PR2 spacer and he put down 197hp on the dyno and thats with no reflash he beat the rest of us with smaller piping.

I would suggest you look at Turbo Mafia you can get 3'' piping with a resonator and the muffler of your choice and still keep it quiet and get the best gains. The DC header will give the best gains for the money like type x said the gains between a sri and cai are minimal so its def a toss up there. Alot of people are afraid to hydro lock but i have many friends with a cai that have had 0 problems but some have experienced a slight lag with the cai.

If i were you i would still run the Injen cai with the PR2 spacer,DC header,3'' piping with a resonator and muffler from turbo mafia, And the reflash this will def yield you over 200 hp to the ground with out it being super loud

 

if your going with the 3" exhaust why buy the shorty.. go big or go home

 

Im going Injen SRI, DCRH (till I can afford a real header ) and Neuspeed exhaust