andy98gt

When i did my pullies I put all three in. I think the alternator one trashed my alternator. So i bought a new alternator in march and havent had any problems and im not using the pulley off the BBK set i bought im using the stock one off the alternator. SOoooo who says you cant run 2 pulleys?? It was the exact same size anyways i checked them out.

6mustang6

With those mods you should be running at least 20 more HP. The tuner is supposedly good for around 15, headers around 10, and the pullies around 5, but im only saying 20-25 hp cause those numbers are always optimistic.

Fobra

yea thats internet math, however the tune determines everything and the diablo is not going to be what you think it is... I promise... whenever you read those internet advertisements - those parts they have installed do infact make those advertised power gains HOWEVER
that gain is made from a stock car to
that particular car with a DYNO tune for that PART
so... they dont all add together

Fobra

esp given that a stock GT will pick up 15-20 rwhp on just a dyno tune alone

6mustang6

Seriously? Then why do i need a programmer, if i can just take it to a dyno? damn, i feel jipped that i just bought a hypertech.