How much hp at 7lbs on stock GSR could I expect?

[dallasb84]

actually........ 7psi at the intake manifold..... is still 7 psi at the intake manifold no matter how you butter your bread.........now.... many oem turbo setups draw signal psi from the turbo housing........ so there are differences because of turbo a/r and intercooler efficiancy.....ans so on



later QD.




lol

[all-mota]

actually........ 7psi at the intake manifold..... is still 7 psi at the intake manifold no matter how you butter your bread.........now.... many oem turbo setups draw signal psi from the turbo housing........ so there are differences because of turbo a/r and intercooler efficiancy.....ans so on



later QD.




lol

yes 7psi is 7psi but a t25 turbo pushes 750cfm of air at 7 psi
a gt30r pushes 1350cfm at 7 psi. the boost pressure doesn't mean jack

that makes a huge difference

[lookitzme16]

ok I understand that part of it. BUt Im still having trouble understanding why you need a dyno tune. ISnt that what the maf meter and o2 sensors do, is tell the ecu is its running to rich or lean and compensate time to ajust for that? If thats so then why would it matter if you have boost? I just seen a gsr with a stock engine and head running 9 lbs at 325 whp, it was tuned tho so I dont get why an untuned stock gsr would not have somewhere around 275 whp untuned?