05 CTS V, built, maggied, nitrous

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Jun 20, 2016 | 05:59 PM

bubbolootz

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Teching In

Joined: May 2012

Posts: 18

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From: Ontario

05 CTS V, built, maggied, nitrous

Been a while since I posted, just finished up the build. Forged LS6 bottom end, cnc ported 243s, ls7 lifters, mp112 port and polished, 1:1 rears, 2.6 upper and IW overdrive lower.

Made 480rwhp on stock bottom end and stock heads and unported blower and pre 1:1 rears.

Finished up last week getting re tuned only picked up 20whp for ported the heads, blower, and 1:1 rears. Seems a little low for me.

Have a few questions, what's the max rpm of a mp112, I think I'm over spinning the blower just creating heat, should I go up to a 3.0"? Pulling 15psi out of it but I know more boost doesn't mean more power, also means more heat, yes it's meth inj too.

Also headers are starting to glow during crusing and if I let it idle after they're still a bit red, haven't checked for vac leaks yet, TB is over ported a bit idle is a tad high.

Yes my AFR are perfect 14.7, timing is spot on, checked lifter preload thought maybe a valve could be hanging open to long that was ok. I'm thinking I'm overspinning the blower and causing high temps causing the headers to glow? No cats btw.