SD Tune on the 408

im asking cuz im stupid about this...
should i get my next tune for the 408 updated to be SD?
Please school me.

yes with atleast minimal single 4" air tube. the tubing in most CAIs will become a restriction for a healthy 4xx cube motor

Thnx quick.. i have a volant CAI right now..

kiss it by if you want airflow. a good healthy motor requires as much as into it as possible or you will create a vaccum as rpms rise and lose KPA [lose power] ppl think you cna just toss in a motor without every partof the build that matches

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Originally Posted by MidwestSS

Thnx quick.. i have a volant CAI right now..

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Quick Is correct ... That's where most gains are with sd tunes

my 410 needs a single 5" tube, but decided to have a twin 4" built ;)

Quote:

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Originally Posted by skeet

my 410 needs a single 5" tube, but decided to have a twin 4" built ;)

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:). Exactly what I was thinking ! Two 4 inch charge pipes Might flow a ton more air. Then what I had before

how big of a throttle body are you running? 4" tube should easily support a 102mm TB since they're both the same size, right?

im running the volant intake, whatever size that is on my 90mm tb

think about it this way...

take a 1" diameter piece of house about 1" long and blow through it, very easy right?

now take another 1" diameter hose and make it about 3' long and throw in a bend or two and blow through it again, not so easy huh?