Intake and throttle body opinions
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All Jantzer did was take and copy an inexpensive unit and did not even copy it correctly. Nothing but idle issues resulted from an improperly machined IAC port as well as sticking blades due to material selection and machining. It was a poor copy by somoene who is not an engineer and did no testing, all he did was steal someone elses design and then produced a poorly working version of it.
All Jantzer did was take and copy an inexpensive unit and did not even copy it correctly. Nothing but idle issues resulted from an improperly machined IAC port as well as sticking blades due to material selection and machining. It was a poor copy by somoene who is not an engineer and did no testing, all he did was steal someone elses design and then produced a poorly working version of it.
i tested it myself and got what i considered huge gains.
i got it used with a FAST tb and $300 worth of injectors for $1200 shipped. it was even lightly ported by LPE...i ported it more at home with a dremel and 2hrs of time.
on my cam only/bolt-on car....i swapped out my ls6/ported TB for the FAST ....it was tuned before and after so the A/F was consistent...done on the same day, same dyno (never unstrapped it, swapped the intake ON the dyno):
18hp and 12ftlbs
5-10hp and ftlbs from 3000rpm and up...NEVER lost power even down low
moved my peak torque down 500rpm
engine peaked at 6400rpm...not what i would call a "top end cam" and it still showed NICE gains
i have no doubt you'd gain 1/2 that even if you were strictly bolt on. it just flows that much better.
as stated above...the extra money is WELL worth it.
all the stock hardware swaps over to the FAST setup...fuel rail, injectors, throttle cable, gaskets (except TB obviously). hell even the stock bolts (except valley cover...and those come with the intake) can be used it THINK, although the FAST includes those anyway.
so for the $1200 you get a direct swap....although a tune may help some cars. i know i was lean after it.
I have a few buddies that picked up the old fast 90's for 500 bucks...Little port job and a matching tb and you'll be good to go...If not then go w/ the 96mm pp intake and 90mm or above tb. For you guys telling him to run a ls6 intake and pp tb hes running a 6.0 motor not a ls1.
Last edited by MonmouthCtyLS7; Dec 24, 2009 at 07:09 AM.


