Jturner, do you have the factory exhaust with all heat shields in tact? With the close proximity of components in the fr layout heat shields are not to be underestimated. Aftermarket setups that omit shields and/or increase piping diameter can have major downside effects. For example, I replaced my resonator with an aftermarket unit for cost considerations and I now overheat my gas tank on long drives, surpassing the evaporative system's ability to vent and raw fuel fumes fill the cabin. That's not roadster life