dustinhurley
05-27-2003, 07:40 PM
I'm sure a lot of us are skeptical about purchasing an exhaust set-up due to the recent complaints of losing low-end power. I think its time we decide what is the best overall exhaust system. The issue of losing low-end power for high-end gains is endlessly debatable, however, I feel that the majority of us desire gains that will benefit normal street driving.
Header: I have not seen any persuasive number to prove that a header on the K20A3 is very benefitial. Everyone who has purchased one claims that the gains are nice. However, I recently saw number posted on this board stating the DC Sports header lost 2 tq. Will an upgraded exhaust manifold always cause a loss of tq on this motor? Would the numbers change based on the diameter of the rest of the exhaust system?
Midpipe: A lot of people are running 2", 2.25", and 2.5" midpipes. Which diameter proves to be the best for street application? i.e. doesn't cause a loss of low-end power. It seems that most of the aftermarket cat-back system are around 2.25". I'm looking into the Fujitsubo Legalis-R which is 60mm (2.36").
Axle-back: Would any benefit arise from simply adding an axle-back system, such as the one Spoon offers? If every exhaust combo proves to lose low-end power, some might want to simply upgrade the muffler for more appeal and a better sound.
Overall: With all the different diameter combinations one could create for each aspect of the exhaust system, it seems impossible to test them all. But, with the knowledge of everyone, I think we can conclude on the best set-up for someone desiring a street application. Please excuse the length and please provide any input you may have.
Header: I have not seen any persuasive number to prove that a header on the K20A3 is very benefitial. Everyone who has purchased one claims that the gains are nice. However, I recently saw number posted on this board stating the DC Sports header lost 2 tq. Will an upgraded exhaust manifold always cause a loss of tq on this motor? Would the numbers change based on the diameter of the rest of the exhaust system?
Midpipe: A lot of people are running 2", 2.25", and 2.5" midpipes. Which diameter proves to be the best for street application? i.e. doesn't cause a loss of low-end power. It seems that most of the aftermarket cat-back system are around 2.25". I'm looking into the Fujitsubo Legalis-R which is 60mm (2.36").
Axle-back: Would any benefit arise from simply adding an axle-back system, such as the one Spoon offers? If every exhaust combo proves to lose low-end power, some might want to simply upgrade the muffler for more appeal and a better sound.
Overall: With all the different diameter combinations one could create for each aspect of the exhaust system, it seems impossible to test them all. But, with the knowledge of everyone, I think we can conclude on the best set-up for someone desiring a street application. Please excuse the length and please provide any input you may have.