Y-pipe adds an additional 1-2 hp and quicker acceleration to your TNT, HO, SDI or E-TEC. Direct bolt on with no jetting changes or fuel programming needed. SPI's 800R Y-pipe is a guaranteed 2-3 hp gain. There's no sacrificing torque or mid range power to pick up the extra power. Peak power remains the same as stock et 8100-8200 rpm. When used with SPI single pipe, peak HP is achieved at 7900-8000 RPM. Available in both high polished ceramic or high temp black.