Heffner stock internal Audi R8 V10 twin turbo kit - 725 all wheel hoserpower at 6 psiHeffer Performance is wrapping up their R8 V10 twin turbo kit. The car produces 725 whp on pump gas at only 6 psi on the stock internals. This is up over 225 whp from stock. No word yet on the cost of the setup but the but the V8 kit for the stock internals was around $25k last time we checked. This will be a bit more than that.
This article was originally published in forum thread: Heffner stock internal Audi R8 V10 twin turbo kit - 725 all wheel hoserpower at 6 psi started by Sticky View original post