I currently have SLP 1 3/4in Dual Cat headers and a Random Tech Dual Cat exhaust system, i've removed the cats. These mods alone were a huge boost, and the car can hit a solid 13.8-9. These were great mods and helped alot but i want some more kick. For my next round of mods i think im going to install some Crane 1.6 rockerarms, an AFPR, and Underdrive Pullies. How much more of a gain should i expect from these type of modifications. How much of a ETA improvment would you guys guess i might pickup

 

id say ud only get like 20 hp max from that...i dont think the rockers would be worth the cash

 

Thats it I would think i would get more then that. Why do you think 1.6 RR would be a bac idea??