MBRP 4" turbo back

[Frankf250]

Hey all, I just finished installing my 4" turbo back with cat delete on my 07. Just hoping to get some feedback on the sound.. It doesn't have as much turbo whistle as I thought it would.. My bro has a 04 with turbo back banks w/ his cat and his sounds more turbo sound.. Is it cause he has a K&N? I don't want to change the air cleaner.. Warranty reasons mostly.. What does everyone think? Sounds good when I give it the beans though!

Thanks


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[Lilpooh]

It's your turbo, the '07's have more blades on the turbine wheel, less whistle.

Your bro has either a late '04 with less turbine blades than the '07, or the early '04 which has the '03 motor and less turbine blades than the late '04's.

Get a '03 turbo if you want more whistle.

[Frankf250]

Is the 03 turbo better? Like power or efficiency ?


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[ckyguy68]

Originally Posted by Frankf250

Is the 03 turbo better? Like power or efficiency ?


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Power gains are negotiable.... According to Eric at Innovative, the 2003-2004 6.0s are known for being a few tenths faster on average due to "the turbo, weight of the truck, computer, cam, and a bunch of other small changes".