Hi I am new here and just bought a 2011 Acura TSX and wanted to know

• what intake manifolds fit the engine.
• what exhaust manifold fit the engine

any help I will greatly appreciate

 

The RBC intake manifold from the Civic Si has longer runners and is also aluminum. It is said to make more power on the high end.
Inake kits:
AF Dynamic short ram
DC Sports CAI
K&N
Injen

Exhaust manifolds you have several options:
RV6 "The original downpipe
Rev9 Copy of RV6
Skunk2 Alpha series

Exhaust systems (catback)
Tanabe
Greddy
Tsudo
then you have several "off brands"

That should be a good starter list for you to decide what YOU want.Search is a good friend to have too! Hope this helps!

 

sorry to sound foolish but what year Civic Si will it be ?

 

2006-2011 Civic Si came with the "famed" RBC intake manifold, modification will be necessary to mate with our throttle body.

 

I just bought the RBC intake from HeelToe and they sell the whole kit with adapters to make it work. I’m using the AF dynamics intake as well which fits pretty good no issues with the stock manifold. Haven’t installed the RBC just yet.

 

Don't forget the Fujitsubo Legalis R. In my opinion, it is the exhaust for the CU2. As far as the RBC goes, it has been proven to lose power and torque below 5,000 RPM, with modest gains above that.

 

Go with aem intake, sounds awesome

 

For exhaust system I also recommend TSS Tuning really cool sound, I have it on my CU2 actually.

 

 

I got the injen. No regrets. Best $200 I spent

 

Magnaflow 14225's + Vibrant 1141 Ultra-quiet Resonator. Very happy and 1/3 the price of any of the model-specific cat-backs available for CU2.