388 to the flywheel, I think not... The best thing about the blitz supercharger is that it is reliable. It still uses a factory ECU, just retuned for the kit. Not only does it add 33 peak HP but it adds at least 15 HP throughout the celi's powerband. the main point is that THIS FI WILL NOT BLOW YOUR ENGINE, it requires no further mods to run fine for the entire life of your car. Maybe later we can figure out a way to even run 35 shots of nitrous?