sergei wrote:Kittah wrote:Cheers for that

So if I'm going with headers and exhaust, will it be worthwhile at that point?
Not unless you are getting programmable ECU.
you're one of those characters that belive that toyota makes every car perfect.
FYI most car makers dont make cars perfect on purpose.
a. it protects their higher model cars so that they can justifiably ask more money for.
b. it protects their own performance brand eg TRD Nismo etc (+ plus courteous to others)
c. if toyota was putting the best research into every car they made then they would have price tags closer to R35 GTR
yes i think headers and a decent exhaust (no bigger than 2.5" on your car needed) would net some power and torque gains.
As for the Pod filter that is a matter of cold air. Pod or cone filters can tend to make you lose power if it simply has to suck hot air because the extra flow is compromised because of this. If you select a good brand pod filter (apexi is good) and design a good way to access cold air then you will get a small power increase. (no need to change your ecu)