RKGarage Performance & Electrical

RKGarage Performance & Electrical

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Custom Dyno Tuning, Aftermarket Electrical Automotive Installations & Performance Upgrades.

Photos from RKGarage Performance & Electrical's post 17/06/2026

We had Jack's BA Wagon that had previosuly been T56 converted and has now been Turbo converted in for a tune ready for him to hit the track again and start being able to drift with some decent power!

Being that this is a Hi Comp Gas motor and will be beaten on Jack said the target was at least 400HP but keep it under 500hp. See what boost we end up at.

On wastegate pressure of 9.5psi it shot straight to 414HP... target met.
We sprinkled some more boost into it ending at 11.5psi & it made 449HP & 847NM...

Unfortunately we have had 1 side of the Dyno retarder fail so it can only hold half its capacity at the moment. As soon as it hits 800nm it maxxes the dyno out and it holds the cars back there till it releases once they make less (exactly what happen to Sams Stroker Clubsport & on Shanksy's R31, both of those would of made a lot more power without the dyno holding them back).
Jacks car would of been closer to 460ish at a guess from where the dyno held it back then released it.

This should be an absolute handfull to drift now compared to the stock Barra setup he had in it before 👌

Photos from RKGarage Performance & Electrical's post 03/06/2026

We had Shanksy's Builds R31 RB30/26 Skyline in to break the motor in on the dyno and then give it a Pump 98 Wastegate Spring tune for now before we make the switch over to E-85 and take it to his brothers workshop over at Modified Performance Diesel to use their hub dyno to properly send this combo.

- Forged RB30/26 ✅️
- 6 Boost Manifold ✅️
- Garret GTX42 ✅️
- Bosch 1650cc Injectors ✅️
- Twin Walbro 460's ✅️
- FFP ✅️
- Link Extreme G4X ✅️
- Powerglide ✅️
- Very Loose Converter ✅️

We left this at 7500rpm and undertimed for now.
At around 18psi through the glide and extremely loose converter it spun up 477HP & 815NM

Check out the comments for a dyno video 👌💪💪

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Perth, WA