Currently my car has a ct20b, KO racing DP, Tanabe B-Pipe replacement going to the Greddy SP Exhaust.
My dyno numbers where a tad disappointing. After closer examination, I noticed I am getting a torque drop off, not unlike the ct26, but not as dramatic. My question is: since the KO is 2.5 inch going to the 2.75 inch tananbe and back down to 2.25 inch for the Greddy SP, is this SP piping my bottle neck? Is this the most likely source of my torque drop off?
If this logic is true, can I just have the SP piping replaced with 2.5, 2.75 or 3 inch piping and have the inlet into the SP muffler bored out to the matching Diameter? (as this would be significantly cheaper than purchasing a new exhaust)
My primary concerns is noise really. I love how the SP is quiet. I cam imagine with the modified bigger piping it would be a tad louder, but still very quiet in comparison.
Any input would be greatly appreciated.
~Vu
My dyno numbers where a tad disappointing. After closer examination, I noticed I am getting a torque drop off, not unlike the ct26, but not as dramatic. My question is: since the KO is 2.5 inch going to the 2.75 inch tananbe and back down to 2.25 inch for the Greddy SP, is this SP piping my bottle neck? Is this the most likely source of my torque drop off?
If this logic is true, can I just have the SP piping replaced with 2.5, 2.75 or 3 inch piping and have the inlet into the SP muffler bored out to the matching Diameter? (as this would be significantly cheaper than purchasing a new exhaust)
My primary concerns is noise really. I love how the SP is quiet. I cam imagine with the modified bigger piping it would be a tad louder, but still very quiet in comparison.
Any input would be greatly appreciated.
~Vu