First, let me say this; I see many of you guys complaining that you spent 400 dollars for a throttle body and plenum combo. Unless if you purchased the Accufab setup, then IMHO you got ripped off. RPM outlet has the BBK 75mm throttle body and matching BBK plenum combo for 299.95 with free ground shipping. Not to mention in the spirit of competition, New Era performance parts is willing to compete with RPM outlet, and is offering for a limited time the BBK 75mm throttle body and plenum combo for 289.95 w/ free shipping, but you must call, and tell them you seen the ad on Fordpower.net concerning the combo being offered for this price.
RPM outlet also have the C&L plenum with BBK 75mm throttle body for the same price, and free ground shipping as well. They also offer the Accufab throttle body and plenum combo for 399.95 w/ free ground shipping. So, like I said, if you paid 400 for something else, other than the Accufab setup you got ripped off.
As for power gains, I can tell you there are many satisfied customers who use these aftermarket plenums, and have no complains about their investment. I've seen numerous back to back dyno results, where people have gained as much as 11+ peak rwhp with just the addition of the aftermarket plenum and throttle body. No special tuning was performed either, and this was on a basic n/a GT motor. I'm not saying that Jerry(SCT Guy) isn't correct in some of his assumptions in the above post, but just because one guys results were "debateable", doesn't mean ALL the results people are getting are open for debate.
Bottom line: No plenum and throttle body combo is going to make a huge night and day difference in power. Then again, what other bolt-on besides a supercharger is going to give you serious power gains ? If you're looking to improve the flow of your intake system, then I have to say any of these plenum & throttle body combo's should help, and with internal motor work and/or boost, the results will only be better.
We must also remember that a few companies are working on some aluminum lower intake setups to improve flow over the stock plastic piece, so if they come out with one that is proven to work, you can always combine a nice high flow upper intake eblow(like the ones mentioned in this thread) to improve flow even better. Remember, as Nighthawk said, it's about all the parts working together to improve power.
P.S. Most aftermarket plenums I have seen seem decent, and will probably make similar power gains when compared to each other. The only one I would DEFINATELY stay away from is the Mac plenum and Mac throttle bodies. I've heard nothing but bad things about Mac as of late, and I know by experience their customer service is crap, and so are their throttle bodies.
RPM outlet also have the C&L plenum with BBK 75mm throttle body for the same price, and free ground shipping as well. They also offer the Accufab throttle body and plenum combo for 399.95 w/ free ground shipping. So, like I said, if you paid 400 for something else, other than the Accufab setup you got ripped off.
As for power gains, I can tell you there are many satisfied customers who use these aftermarket plenums, and have no complains about their investment. I've seen numerous back to back dyno results, where people have gained as much as 11+ peak rwhp with just the addition of the aftermarket plenum and throttle body. No special tuning was performed either, and this was on a basic n/a GT motor. I'm not saying that Jerry(SCT Guy) isn't correct in some of his assumptions in the above post, but just because one guys results were "debateable", doesn't mean ALL the results people are getting are open for debate.
Bottom line: No plenum and throttle body combo is going to make a huge night and day difference in power. Then again, what other bolt-on besides a supercharger is going to give you serious power gains ? If you're looking to improve the flow of your intake system, then I have to say any of these plenum & throttle body combo's should help, and with internal motor work and/or boost, the results will only be better.
We must also remember that a few companies are working on some aluminum lower intake setups to improve flow over the stock plastic piece, so if they come out with one that is proven to work, you can always combine a nice high flow upper intake eblow(like the ones mentioned in this thread) to improve flow even better. Remember, as Nighthawk said, it's about all the parts working together to improve power.
P.S. Most aftermarket plenums I have seen seem decent, and will probably make similar power gains when compared to each other. The only one I would DEFINATELY stay away from is the Mac plenum and Mac throttle bodies. I've heard nothing but bad things about Mac as of late, and I know by experience their customer service is crap, and so are their throttle bodies.