RKGarage Performance & Electrical

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

Branden brought his VX Top Swapped Commodore back in for the next round of mods!This had previously had a Haltech 750 in...
23/06/2026

Branden brought his VX Top Swapped Commodore back in for the next round of mods!
This had previously had a Haltech 750 installed by us previously and made 265HP & 444NM.

New list of mods

- Mace Stage 2 Cam Package ✅️
- Weld Some Beads On Intercooler Piping ✅️
- New 3.7 L*D Diff ✅️
- Walbro 255 Pump Upgrade ✅️
- Clean The Engine Bay ✅️
- Fix Brake Lights ✅️
- Fix Stereo Not Turning On ✅️
-Speedo Calibration ✅️

After we got all the street manners dialled in and the speedo reading correct was onto the power runs.

With the converter unlocked it ended up at 290HP & 647NM
Massive increase from before which you can see in the last picture that we have put the overlays on.

Keep in mind this is also 3.07 ratio to 3.7 ratio diff, multiplies the torque readout and drops the power readout by a bit!

Should be a completely different animal to drive now!

Idle video in the comments!

This is a good example of why you don't drive/thrash an untuned car especially when it has the wrong parts in it and is ...
22/06/2026

This is a good example of why you don't drive/thrash an untuned car especially when it has the wrong parts in it and is misfiring.
Also, don't let your mates thrash your car, especially when it isn't running right.

Bit of a long post but worth the read.

Kyle got us to redo his turbo setup in his VX commodore.
As can be seen in the 1st picture it had a front mounted turbo setup, it used to overheat all the time and cook all the wiring and plumbing.

Upon teardown I found the incorrect spark plugs installed, not gapped correctly and 1 mismatched plug.
This car has changed hands a few times since it was turbo converted, never been tuned and thrashed across all owners.

Regardless the works carried out were..

- Install Customer Supplied Turbo Kit ✅️
- Remake Intercooler Piping Kit To Suit ✅️
- Remake Dump Pipe ✅️
- Make A Screamer Pipe ✅️
- Supply & Fit New Rocker Covers With Breathers ✅️
- Setup Catch Can Setup ✅️
- Relocate Battery To Boot ✅️
- Extend Wiring To Suit Reverse Plenum ✅️
- Supply & Install Factory Thermo Setup ✅️
- Make An Intake Pipe & Pod Filter ✅️

Round 1 on the dyno didn't work out as the china wastegate failed almost immediately, went from holding 4psi to skyrocketing to 18psi also had a tyre go flat.

New Pulsar Wastegate was supplied & we then had to remake the screamer pipe to suit.
We supplied and fitted a new rear tyre to suit.

Back on the dyno and this is where it all looked promising till it didn't.....

1st run it held 9.35psi perfect and was stupid rich around 10.1 afr and it still made great power almost matching it before when at 18psi...
We went to lean it out a bit, still rich at 10.8 afr and as it got onto boost and levelled out it all went bad...

Motor made a huge knock/rattle and then locks up once I shut it off...
Overlooking the log, Fueling was safe and ignition timing was at 8 degrees...
I am 110% confident this had nothing to do on the tune side, it was plenty safe at this point.

Unfortunately this comes down to the condition of the motor being hurt from being thrashed around untuned and misfiring its head off (which I personally witnessed leaving my house when the customer had his mate driving the car).

This is why I always preach that a Tune is the MOST IMPORTANT part of any build & to then compound on that, a tune can only be as good as the quality of parts installed and the pre existing condition of the motor.

Hopefully the customer is keen to keep going with the car and can source another L67 bottom end, swap it out and then finish this tune and get it to the spot a Turbo Ecotec should be now the parts are whats needed for a decent build.

We had Jesse's VS back in with his Forged A2A L67 Combo...This time round for some more wiring.Jesse had just T56 conver...
19/06/2026

We had Jesse's VS back in with his Forged A2A L67 Combo...

This time round for some more wiring.

Jesse had just T56 converted this getting rid of the Built and Hi-Stalled 4L60e Auto and also had a set of 3.7 Diff gears put in.

He asked us to wire in the LS Coils that Jesse had mounted and made Ignition Leads for (thankyou, makes my life easy!) Bridge the Park Neutral switch so the starter will work, wire in the reverse lights to work and he had also purchased a Powertune Digital Dash that he asked us to also wire in.
He also installed a Bosch Pressure/Temp combo sensor that we wired into the ECU.

While we were there we got the approval to standalone the Haltech 750 Elite setup as it no longer requires the dfi (isn't auto), no longer has the factory cluster and AC was previously deleted.
DFI was removed and the 18x Crank & Cam sensor were relocated to be wired directly into the Haltech itself.
We also wired in the handbrake to use that to trigger Launch control and we tapped into the fuel level sender wire leaving a wire tucked away ready for an aftermarket gauge (ran out of inputs).

All said and done we got it onto the dyno this afternoon to tune it to suit the new Manual conversion and it punched out an astonishing 335HP & 677NM!

It made 288HP when auto and 3.07 diff gears!
Drives like an absolute animal!

Next in line will hopefully be a ported blower casing, bigger U-Ben and 92mm or bigger throttle body with a 4" intake pipe.
Hoefully see closer to 400hp with that!

Check out the comments for a tasty idle video and a dyno pull video!

Jared brought his VU SS Drift Ute back to us to retune it after it went elsewhere and didn't last an event.It made 388HP...
19/06/2026

Jared brought his VU SS Drift Ute back to us to retune it after it went elsewhere and didn't last an event.

It made 388HP on their dyno according to the sheet.
That tune ran up at 379Hp on mine.

He put a new motor together and brought it in for a touch up tune to make sure everything was all good.

This combo has a VCM710, Ported & Polished heads by Jared himself, Pacemaker's and twin side pipe exit exhaust with 3.9's on the rear.

Ended up at 390HP & 712NM
Hopefully this combo last's for him 👌👌

We had Jack's BA Wagon that had previosuly been T56 converted and has now been Turbo converted in for a tune ready for h...
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 👌

We had Lucas's VE SV6 LFX in for a tune.Full X-Force 2.5" Exhaust and an Orssam OTR.We ran it up stock as a baseline to ...
10/06/2026

We had Lucas's VE SV6 LFX in for a tune.

Full X-Force 2.5" Exhaust and an Orssam OTR.

We ran it up stock as a baseline to tune from and found it was extremely rich with the knock sensors pulling some timing as well.

It only made 167HP 😬

After we had finished adjusting the tune so everything was happy and was meeting our targets it ended up at 259HP & 413NM.

Whopping 55% increase in HP and a 30% increase in Torque!

This should feel a lot better to drive now and fuel economy should be a hell of a lot better as well!

We had Brocks VY Burnout Car VYOLATION in for a tune.Another E-85 Ecotec Combo!- Bosch 1000cc Injectors ✅️- E-85 ✅️- Pac...
08/06/2026

We had Brocks VY Burnout Car VYOLATION in for a tune.

Another E-85 Ecotec Combo!

- Bosch 1000cc Injectors ✅️
- E-85 ✅️
- Pacemaker Extractors ✅️
- 2.5" Catback to 4" Party Pipes ✅️
- 3.7 Diff Gears ✅️
- Mace Stage 2 Cam Package ✅️

Endee up at 229HP & 545NM 💪

We had Kai's BF XR6-T in to return the tune to stock so he can put it through engineering to pass the pits.This car was ...
04/06/2026

We had Kai's BF XR6-T in to return the tune to stock so he can put it through engineering to pass the pits.

This car was previously tuned elsewhere with apparantly 350+HP
We ran it up before touching it and it made 333HP on our dyno....

After returning the tune to stock except for reinstating the injector settings as this has Bosch 1000cc in it, it ran up 329HP.

I don't actually know what they achieved on their tune previously, I can see all the tables touched.... didn't do much tho.

Kai also stated the gearbox now feels a tonne better and shifts nicer than it did with the stock tune back in it.

Once passed, we will see this car back to put a proper tune on it and see what we can make with the current external gate spring setup 👌

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 S...
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 👌💪💪

Kynan Brought his VY Burnout Car in for a tune.This one was a little different being it runs on E-85.- E-85 ✅️- Bosch 10...
02/06/2026

Kynan Brought his VY Burnout Car in for a tune.
This one was a little different being it runs on E-85.

- E-85 ✅️
- Bosch 1000cc ✅️
- Mace Stage 2 Camshaft ✅️
- 4:11 Diff Gears ✅️
- Party Pipes ✅️

Once we got it all sorted it put down a very impressive 218HP and a staggering 551NM with the 4:11 Diff Gears!

This should hold top gear no issues at all!

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