HomeE9x 335 N55 Tuning 93 Octane Power Increase Dyno Reading Stock N/A 265whp/266wtq Stage 1 +54hp/+80wtq 319whp/346wtq Stage 2 +65whp/+85wtq 330whp/351wtq $699.00PriceStageSelectEthanol blendSelectQuantityAdd to Cart