Not exactly a back to back, but worth showing in my opinion. I tuned both cars this morning within 15 minutes of each other. Red line is a stock port FD on pump gas, with a high flow cat with our efr 7670 cast kit. Blue is a medium street port fd on e85 with full 3 inch exhaust, our tdx57 on a short runner re amemiya t4 manifold. Open 50mm wastegate. Both cars have same size billet compressor and same sizs turbo manifold runners. Tdx57 has a overly big 1.15 a/r with a p trim turbine( 74mm vs 70
