I am going to install the Borla TD's and the LSD test pipes, seems like a good combination at a good performance to cost ratio. It will also be an easy install. The question is-is it worth it to go ahead and install the headers from a standpoint of cost and installation keeping in mind that this install/reversability is ALOT more involved. In terms of HP, what would I gain w/headers over the TD and Test Pipes?

 

from what i've read, headers won't gain you much power, maybe 1 on the dyno, but the torque increase is significant.

Victor

 

for the $$ I would think the Plenum and Test pipes would add more HP and be a better value ($200+$500=$700)

 

Its the perfect combo... the headers is the last key to eliminate the "restrict stock system"... trust me on this one, if you have the money for the headers+ Test Pipes+ True Dual, go for it... in my expirience the headers don't give to much whp because of the Cats... with the Cats Pipes the headers give the car an impressive top end and low torque. this is my opinion of the combo, its the best way to go if you want to take the engine to less restrict level in exhaust!... when you put this combo, then you can put the plenum to balance the flow!