Cold air intake
You will hear a louder sound from inside the cab but it is from the intake and not the exhaust. Then depending on where you are outside in relation to the truck determines if it increases the sound from my experience
Go with the cold air intake. not going to make your exhaust louder but will improve performance and m.p.g. i did the gotts mod on my 02 f150 7700 and its ok but you cant compare it to the airaid intake on my 99 f250 L.D.!! theres always some guys on forums that will tell you that you can get the same effect from the gotts mod as a good intake but i think those are the guys the put down cold air intakes because they cant afford one or just cheap! lol plus my 02 f150 gets 14 m.p.g. and my 99 gets 18 m.p.g.
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Alright thanks guys and another thing.. Iv got a throttle body spacer which was a waste but it sounds cool anyways if I do -do the GOTTS mod will the whistling noise from the throttle body spacer be louder or the same ???
K guys I just did the GOTTS mod and I didn't feel a difference in pickup and as for gas mileage can't tell just yet. And no my throttle body spacer sounds the same it didn't get louder. To be honest I think all the GOTTS mod does is it just makes it easier for your truck to suck air in but it doesn't suck up any extra air... Cause think about it your engine is only gonna take what it needs..


