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Mike @ Dec 8th 2007 7:27PM
There must be some seriously restrictive pipes on that beast from the factory if exhaust mods alone can find gains of almost 30hp at the wheels!
I'm usually pretty skeptical about what comes out of Hennesshady, but nice work on the new exhaust if it's true.
Rob @ Dec 9th 2007 4:20PM
its not uncommon for aftermarket exhaust systems to free 20-30hp from stock v8 motors, so this would be in line for this v10. Its very possible this exhaust setup deletes the cats and therefore is not street legal. CAI setups often free 10-15hp on mustangs and camaros. Larger displacement engines respond number wise much better to mods like this than smaller motors. Its not like an I4 where $1200 in parts gains 11hp and 7ft-lbs. It seems like a big difference number wise but when looked at as a % gain the results are very similar.