WeaponX ported TB - 12hp increase!
Tech Contributor
Joined: Jan 2006
Posts: 4,761
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From: Saint Louis MO
St. Jude Donor '14-'15
Melting Slicks
Joined: Sep 2009
Posts: 2,180
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From: Minnetrista Minnesota
I am in on the group buy as well, please!!! Ben, what do you think of the AFE cold air intake? Would you expect it to work well with your ported TB? I love Halltech and ran it on my Z, but my mod fund is running thin so looking for best bang for the buck right now.
Drifting
Joined: Jan 2003
Posts: 1,327
Likes: 17
From: Maryland
Received mine today Ben. Changed it out in 15 minutes and that's only because I kept dropping my damn socket it is so humid here B-More. Sounds good. Feels better. I don't know how much more power it brings by the seat of my pants, but it damn sure responds better than before.
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Thread Starter
Safety Car
Joined: Jan 2012
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From: Cin City
St. Jude Donor '14
Received mine today Ben. Changed it out in 15 minutes and that's only because I kept dropping my damn socket it is so humid here B-More. Sounds good. Feels better. I don't know how much more power it brings by the seat of my pants, but it damn sure responds better than before.
Instructor
Joined: Feb 2014
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From: Pembroke Pines /Miami Florida
Intermediate
Joined: Apr 2014
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From: Orange County CA
Drifting
Joined: Jan 2003
Posts: 1,327
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From: Maryland
Thanks. Will be putting core in Box and returning this weekend.
Racer
Joined: Jul 2010
Posts: 344
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From: Houston Texas
Well let’s stop and pause/think for a second… Why would GM spend “extra money” to create a casting with that “stepped lip” as you call it? GM being very cost conscious will not add a performance robbing feature that increases manufacturing complexity for nothing better than have someone mill/port it away.
Think AFM and the required seamless transition from 8 cylinder to 4 cylinder mode, just like the extra butterfly valves in exhaust for an expectable sound (resonance level)… BTW not much different than ZR1 (LS9) TB, except for feedback is contactless…
So why on earth with the hundreds of competent and talented engineers that GM employs would they add unnecessary complexity and cost to simply add additional restriction (throttling losses - costs efficiency) to intake? Guess they are clueless.
Oh you forgot to ask how much of gain was tune?
Think AFM and the required seamless transition from 8 cylinder to 4 cylinder mode, just like the extra butterfly valves in exhaust for an expectable sound (resonance level)… BTW not much different than ZR1 (LS9) TB, except for feedback is contactless…
So why on earth with the hundreds of competent and talented engineers that GM employs would they add unnecessary complexity and cost to simply add additional restriction (throttling losses - costs efficiency) to intake? Guess they are clueless.
Oh you forgot to ask how much of gain was tune?
Drifting
Joined: Jan 2003
Posts: 1,327
Likes: 17
From: Maryland
Because they're building a mass produced vehicle that has to meet emissions and fuel mileage standards set by the EPA. It also has to reliably and consistently generate the power and mileage numbers without risk of failure. They're aware that the majority of Corvette owners will never open the car up and want it to drive like a prius without having to worry about managing the power or being difficult to drive. Base cars are always limited in performance factors because they're built for the masses not the performance purist. The primary purpose of the lip in the TB was to make sure the car met emissions and fuel economy standards while being manageable to drive for the average person. And for the record...Engineers are controlled by bean counters because there's a budget the car has to stay under in order to sell them to the masses at a reasonable price. If they had their way every Corvette that rolled off the assembly line would be a 1000+ hp track ready race car.
Awesome post.
The part bolded is a a major point as well. People scold GM for bean-counting on this car, but I have to say that in some instance I understand why they do it and as a CEO/Owner, sympathize as well.
It didn't stop them from putting out a marvel of a car, with a 460HP baseline that can easily be massaged to 500+ with very little effort. Even on a conservative side if this simple 15 mod adds 10RWHP, most owners will go from the 460HP at Crank, (using a loss of 15% to crank or that 10RWHP divided by .85) to 483HP. Add a simple drop in filter and you see a conservative 7HP, putting you in at 490.
That's almost 500 HP for as little as $350 (Airraid filter and Throttle Body) after core and shipping
