Bigger injectors?

[stryckin00svt]

With my tax return $ im going to buy the American Thunder cat-back system from flow master and i cant decide whether to get a 4# or 6# crank pulley from JLP. Will i need to upgrade my fuel system with either or how big can i go until i need to?

[Sweet35th]

With my tax return $ im going to buy the American Thunder cat-back system from flow master and i cant decide whether to get a 4# or 6# crank pulley from JLP. Will i need to upgrade my fuel system with either or how big can i go until i need to?

Go 4#. The 6# builds up too much heat, and without a supercooler (modified intercooler system) its benifits can be overshadowed by higher risk of engine damage, as well as higher air charge temps.

Fuel system will be just fine...If you up grade anything, get a 90mm lighting maf (from a 2001 or newer). You can get a kit with it all from JLP.

[lilstang5O]

With my tax return $ im going to buy the American Thunder cat-back system from flow master and i cant decide whether to get a 4# or 6# crank pulley from JLP. Will i need to upgrade my fuel system with either or how big can i go until i need to?

I wouldn't touch the injectors on that setup. Waite till you do intake/heads then get bigger injectors!

[stryckin00svt]

Cool, thanks.