Duramax VVT Science
Ultimate Diesel Builder Guide|August-September 2017

An Inside Look at the Ht Turbo Promax 64

JS Hansen

The introduction of the Variable Vane Turbocharger (VVT) on the LLY GM Duramax in 2004 may have been mostly emissions control related, but in the years since, it has proven to be a solid performer with great power potential with a few tweaks from the aftermarket. The Garrett VVT used on the 2004.5-2016 Duramax has gone through a few revisions with each engine platform, but remains a pretty solid turbocharger for daily driving, towing and power output up to around 530 horsepower.

But as with anything else, the aftermarket always finds ways to improve performance and the VVT turbo is no different. High Tech Turbo of Salt Lake City has specialized in everything turbo since 1985 and has been modifying the OEM Duramax turbochargers for quite a few years with great success. The ProMax 64 will support up to 600 rear-wheel horsepower and can reduce exhaust back pressure and EGTs for daily driving and towing applications. It also bolts directly in place of the stock unit, with no other changes necessary.

Continue reading your story on the app

Continue reading your story in the magazine

RELATED STORIES

SEEING 2020

EMISSIONS FRIENDLY UPGRADES FOR THE 2020 DURAMAX

5 mins read
Diesel World
November 2021

GM SAYS PRODUCTION STARTS ON REPLACEMENT BATTERIES FOR BOLTS

General Motors said that production has resumed for battery modules used in recalled Chevrolet Bolt electric vehicles, and customers could start getting replacement parts by mid-October.

1 min read
AppleMagazine
September 24, 2021

Complain and Get Results

Use these tried-and-true strategies to get companies to listen to you.

7 mins read
Kiplinger's Personal Finance
October 2021

I Love My Suburban

FINISH LINE

3 mins read
Hot Rod
October 2021

GM POSTS $2.8B PROFIT, BUT CAUTIOUS TONE SINKS SHARE PRICE

General Motors posted a healthy $2.8 billion second-quarter profit this week, but its cautious outlook for the rest of the year spooked investors.

4 mins read
Techlife News
Techlife News #510

GM WARNS SOME BOLT OWNERS TO PARK OUTDOORS DUE TO FIRE RISK

General Motors is telling owners of some older Chevrolet Bolts to park them outdoors and not to charge them overnight because two of the electric cars caught fire after recall repairs were made.

3 mins read
Techlife News
Techlife News #507

Saving Youngstown. Again

One U.S. president after another has promised to turn this Rust Belt city around. Now Joe Biden is planning to steer millions of dollars in federal funding to revive manufacturing. So where are the jobs?

10+ mins read
Bloomberg Markets
June - July 2021

BIG POWER, BIG LUXURY, JUST PLAIN BIG

2024 GMC HUMMER EV SUV

4 mins read
Motor Trend
July 2021

Clearaudio Concept Active Wood

TURNTABLE

10+ mins read
Stereophile
June 2021

WALMART INVESTS IN GM'S CRUISE AUTONOMOUS VEHICLE SUBSIDIARY

Walmart and some institutional investors have joined the latest investment in Cruise, bumping the capital influx into the General Motors autonomous vehicle subsidiary from over $2 billion to $2.75 billion.

1 min read
Techlife News
Techlife News #494