NewbVetteGuy

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.


Adam

lionelhutz

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?

NewbVetteGuy

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/


Adam

Dustin James

Hi Adam - resurrecting this thread a bit, but wondering if you might have any more information / insight into if the Pro-Flo 4 XT-Style fitting under the stock small block hood of a 1969? If not, will it fit under a short L88 hood?
Any info is greatly appreciated!

7t9l82

I had an 88 lingenfelter trans am with a 383 it came with their super ram which started with a heavily re worked base it would go 6000 rpm and made 450 horsepower. A stock runner and plenum couldn't get to that level of power.

mrvette

I would not EVER buy anything from TPIS, they sold me a ZZ9? cam of theirs many years ago, and the thing had a very terrible running habit, highly intermittent idle roughness and did not smooth out till about 2k on a pull.....I finally gave up going after the electronics and changed the cam because of lousy fuel economy on top of it......AND put in a stock L98 cam, and it's been fine since, no other changes.....that's four different computers and two different chips from tuners.....

AND when I went for the LT1 style intake I wanted the HEI up top in back, so a TIG welder buddy that can weld aluminum to concrete and make it stick......HE welded up my mods on the induction....remote stat housing, plumbing, EGR crap mods, been on the car for about 15 years now....Good economy and of course where HEI up top the way God intended, as sparks and water don't mix......

see pix below....

TPIShark

I have to disagree on the Stealth Ram fitment. Mine fits fine under the stock hood on my '76, although you will need to ditch the hood insulation and mounting pins. It also works great. Ran mid-12's at Englishtown before they closed up, with a stock ZZ4, mild converter and 3:55 rear...