Anyone used these..........a non Nissan enthusiast tells me they make a BIG difference. Any conflict with the stock electronics? Frank 93 SE-R Auto KYB GR-2's ST front and rear Sways Stillen Tower Strut Brace JWT POP and ECU HKS Cat Back Stillen 4-1 headers (new design) SP 8000 195X55X14 w/Stock Wheels