Please reply if you had experience with this combo. I just purchased an 8lb lower and deciding on which upper to go with. With my old 4lb lower, I was running a 2.93 and the car moved out really good. I decided to switch it up and go with a 8lb lower to see if I get better results. I'm trying to go the fastest with a unported blower this year and maybe KB next year. I have the Billetflow pulley system and these are my options:
Billetflow"Typical boost gains over stock pulley (3.65")"
1.5-2.5 lbs. 3.400"
3.5-4.5 lbs. 3.100"
5-6 lbs. 2.930"
6-7 lbs. 2.760"
Right now, I think I will go with the 3.4 upper. What do you guys think?
I already have the alt pulley w/PA alt. and some cooling mods LFP HE and res. tank which should be fine for now. What other mods would I need? BAP, 60inj, SCT MAF??? The person I bought it off of had great results with the stock upper pulley with cooling mods but no BAP, meter or injectors. He works and got his car tuned at Speed Inc. which is a very reputable performance shop in the Chicagoland area. Billetflow does make a stock size pulley so I can have everything match.
About my tune, I still have to call Hermann. I don think I will need a retune. My car was tuned to run that much boost with my 4lb/2.93 combo. I think I will run the same boost but it will just kick in earlier and make more torque. It would jump up to 18 and back down to 14-15lbs.
Thanks :-D
Billetflow"Typical boost gains over stock pulley (3.65")"
1.5-2.5 lbs. 3.400"
3.5-4.5 lbs. 3.100"
5-6 lbs. 2.930"
6-7 lbs. 2.760"
Right now, I think I will go with the 3.4 upper. What do you guys think?
I already have the alt pulley w/PA alt. and some cooling mods LFP HE and res. tank which should be fine for now. What other mods would I need? BAP, 60inj, SCT MAF??? The person I bought it off of had great results with the stock upper pulley with cooling mods but no BAP, meter or injectors. He works and got his car tuned at Speed Inc. which is a very reputable performance shop in the Chicagoland area. Billetflow does make a stock size pulley so I can have everything match.
About my tune, I still have to call Hermann. I don think I will need a retune. My car was tuned to run that much boost with my 4lb/2.93 combo. I think I will run the same boost but it will just kick in earlier and make more torque. It would jump up to 18 and back down to 14-15lbs.
Thanks :-D
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