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Quick question...MTI X1 or Speed Inc SI007...

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Old 12-14-2006, 04:54 PM
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Default Quick question...MTI X1 or Speed Inc SI007...

for an '04 GTO. Daily driver.

stock heads, stock intake
TCI MaxEffort 3200 stall
Longtubes, no cats, stock catback
Stock gears (3.46s)

I can get a good deal on either...which would you pick?
Old 12-14-2006, 05:00 PM
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the X1...but im biased (its what i have)
Old 12-14-2006, 06:00 PM
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Speed inc
Old 12-14-2006, 06:30 PM
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I like my X1. It makes a lot of mid range torque=good for DD.
Old 12-14-2006, 07:44 PM
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i say go X1!!
Old 12-14-2006, 09:17 PM
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im biased too.
Old 12-14-2006, 09:51 PM
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SI007 cam has smooth idle, its not all about peak numbers, however it has pushed 440rwhp in 2002 Z06 with hand ported and milled Rich Groh 243 heads.

I've seen numbers range from 365rwhp-400rwhp, in automatic GTOs using SI007 cam.
Old 12-15-2006, 02:50 PM
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Thanks guys. Looks like the 007 is the cam for me.
Old 12-17-2006, 08:04 PM
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http://www.ls1speed.com/movies/larryz06.wmv

heres a video of Larry's (speed inc. shop manager) 02 Z06 running SI007, cam only in this video IIRC Note the exhaust sound.




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