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HDL Performance Performance Engine Tuning For GM Platforms

03/11/2026

Logan brought his VF SV6 in for a tune after fitting headers, exhaust, and OTR. He mentioned it felt like it had lost a bit of power since adding the mods and wasn’t running so good.
We did a base run at 140rwkw and 307nm peak
After tuning - 199.8rwkw and 380nm peak. A 60rwkw gain peak, with over 100nm gain from 4000rpm up! Unreal. If you’ve got one, booked in with us!

20/10/2026

Wicked Edit! 🤘

05/10/2026

🤘☺️🤘

29/09/2026

🔥 WIN A FAMILY PASS TO SUMMER OF CARNAGE! 🔥

We’re giving away a FAMILY PASS to Summer of Carnage at Whanganui Speedway this weekend! 🏁🔥

TO ENTER:
👉 LIKE this post
👉 COMMENT below and tag who you’d bring along!

Sharing isn’t required, but we’d love you to SHARE it around and get the word out! 🤘

🏆 Winner drawn at 8PM Thursday!

We’ll be there this weekend helping put on a show, so come down, say hi and enjoy some carnage! 🔥💨

Family pass is either
2 adults + 2 children
Or
1 adult + 3 children

⚠️ We’ll announce the winner from this page.

22/09/2026

Prepped ready for this weekend!
Peter Clarkson
0tyres Burnout Car

19/09/2026

Autofest 26 prep!

07/09/2026

🔥 ARE YOUR MUFFLERS COSTING YOU POWER? 🔥

Flowmaster 40 Series mufflers sound good… but are they really worth a 40rwkw loss?! 😳

Even we were surprised by just how much of a restriction these mufflers proved to be on the dyno.

Back to back run, same timing, same AFR
The difference? Nearly 40rwkW just from removing the restriction.

They might give you that classic Flowmaster sound, but when you’re chasing power, flow matters!

Sometimes the restriction isn’t where you expect it. 👀

03/09/2026

Devyns VY SS. Came in with a OTR and maf in already installed with no tune, once we removed maf and tuned to suit, we picked up another 20rwkw peak and around 20-30Nm torque from 4000rpm up where the maf is quite restrictive.
Also added the ghost cam idle as requested.

How’s the mighty AU with the stock car motor!? The 6 Banger Series coming in with the hype ups!
04/07/2026

How’s the mighty AU with the stock car motor!?
The 6 Banger Series coming in with the hype ups!

11/06/2026

Longer video with some explaining.
VY HSV with VCM714 camshaft OTR, and stock exhaust.

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