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Tuned Port style EFI w/ conventional sbc heads

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Old 07-18-2018, 01:12 PM
  #21  
NewbVetteGuy
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Originally Posted by lionelhutz View Post
It's TPiS with a small i so I'm doubting the TPi in TPiS stands for tuned port intake. The TP might stand for Total Performance.
It stands for "Tuned Port Induction Specialties". They certainly are hiding what it originally stood for and rebranding around "Total Performance" today, but that's not actually what TPiS stands for.

I get how people started using the terms in really imprecise ways, given the history, but it just muddies the waters today.

The OEM Engineers actually carefully planned the length of the intakes and the cam timing to ensure that they were matched, hence "tuned"; it was GM's first foray into Port Injection, hence "Tuned, Port Injection/Induction". Every intake after that designed for port injection is just naturally then called "Tuned Port Injection" but as EVERY intake is "tuned" for a certain RPM it just doesn't mean much.

By the more generic definition, all stock LS family engines are "Tuned Port" engines and all their intakes are "Tuned Port Intakes". It's just too generic and broad to be helpful.


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Old 07-18-2018, 01:35 PM
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OK? That just means the original name came from the fact that they were doing performance improvements to tuned port engines when the company started. TPiS doesn't call the MiniRam a tuned port intake. The name TPiS MiniRam is just the company name followed by the name of the intake MiniRam. Today it makes sense to be re-branding since being a tuned port engine specialist doesn't mean much anymore.

Wonder how the Edelbrock Pro-Flo XT would fit under the hood, or the Chevy Ram Jet 350 manifold?

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Old 07-18-2018, 03:53 PM
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Originally Posted by lionelhutz View Post
OK? That just means the original name came from the fact that they were doing performance improvements to tuned port engines when the company started. TPiS doesn't call the MiniRam a tuned port intake. The name TPiS MiniRam is just the company name followed by the name of the intake MiniRam. Today it makes sense to be re-branding since being a tuned port engine specialist doesn't mean much anymore.

Wonder how the Edelbrock Pro-Flo XT would fit under the hood, or the Chevy Ram Jet 350 manifold?

Yep and Yep. It DOES just help to further muddy the waters on exactly what "TPI Intake" means, though.
The Edelbrock Pro-Flo XT is a good option if someone's looking to leverage the pretty great-looking Edelbrock EFI, too, but their EFI is very much tied to their intakes only, no "BYO intake" solutions.

I think the Pro-Flo XT will fit; it's smaller than a super ram but a little bit... http://garage.grumpysperformance.com...ant-more.2614/


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