Hello,
I have a 2003 H2 with magnuson. I want to change it to a 90mm j tube and throttle body. Does anyone know which model throttle body I would need? I'm sure I will need to retune it, but do I need to do any fuel upgrades? I have 42# injectors, and inline boost-a-pump.

Thanks,
Tim

 

You will need the 90mm Jtube, you can purchse that from Left Cost 32 760-522-8669. He also has the LS2 Throttle bodies and adapter harnesses....you will also need a TAC module from the dealer. I would suggest a re-tune to reap the full benifits of the conversion.

 

Great thanks. I called you guys for the j tube last week but you didn't have any in.

Thanks,
Tim

 

call the number above, they will have them.

 

Thanks again.

Tim