Unigroup Engineering

20/09/2026

Sunday test day, Troy's Mazda Rx4 with Chevy small block V8+ E85 Carby.

9.9 @ 137mph
9.7 @ 141mph (Nitrous)

Scroll back a few posts to see the dyno runs and specs on this cool Mazda.

Engineer's take:
The car was quick but there was quite a lot left on the table. The Nitrous system was not adding the expected power.

The car ran the expected Mph with no nitrous, ruling out anything sinister with the engine. Nitrous was jetted for 150+hp. Yet we only saw a mild increase in mph and times. The day came to an end before we could get on top of it. On the upside, everything is in one piece.

We'd love to see an 8.8 and 150mph. We'll be back.

Thank you Troy for having us on board. The day is always colourful and wouldn't be the same without:
El Smoker
Rig Boss Pete
Coyote Joe
Bumbag Ivan

20/09/2026

Test and tune @ WSID today...Twin turbo James with LS powered Capri...Out for some 1/8th mile passes. Congrats on the PB, 5.0sec and 139mph.

We come from an engineering background and love facts and metrics, so let's do some data:

Launch RPM: 4500 (tried 4000 and 4250, as rpm increased ,60' times dropped from high 1.2s to low 1.2s)
Launch boost: 12psi (wastegate press). Kept boost fixed for launch so RPM changes could be validated.
Peak boost: 15psi (some issues to address here. For now, this is the highest we can get to, changes planned).
Shift RPM: 7200
Power: 1000hp @ engine

The chassis is taking the current power with ease, minimal wheel spin, lots of room for improvement.

Tips:
Knock sensors can provide valuable information. This engine is currently running 10 percent extra fuel in cylinder 6. Faster than EGTs in picking up cylinder fuelling imbalance. Consider them for your build. Hardware investment is $100-$200. Absolute bargain. The catch: Requires a skilled operator and a capable ECU.

Tip 2
To approximate 1/8 mile times and mph to quarter mile:
Multiply time by 1.55.
Multiply speed by 1.25.

Thank you for having us on board and tuning in.

Thank you to Simon and Bella, killer crew!

30/05/2026

Chris' SR powered Corolla on the dyno. 500hp, 28psi without breaking a sweat. 566hp for the hero run, 32psi.

Specs:
SR20 Turbo
Tomei 256 pon cams
1650cc injectors, almost maxed out.
Nitto rods , CP pistons.
Pulsar 3576 Gen 2
Haltech Elite 1500

21/05/2026

Today's project with SDR Motorsport. Requests:
- Only has a start up tune, fouled the plugs, get it running good.
- Engineer it...

First, engineering...done a thorough inspection, got a to do list and a plan together.

Second, got the Haltech ECU setup, sensors calibrated, ready for a run on. Luke at SDR already had the new plugs in, Steve and Jacob setup the .

Sounding good, good progress for the day...🙂

19/05/2026

13BT Corolla.
Cool project from last year with SDR Motorsport.
We are told she's still running well and providing fun times behind the wheel.

17/05/2026

Troy's new 434 cube SBC RX4 on the dyno. Carb swap, jetting then nitrous to finish the night. E85, 12:1 compression, AFR heads. Power figures:

504HP - 850cfm carb
510HP - 950cfm Holley XP carb
645HP - as above with Nitrous

Safe tune up with still power left, ready to hit the track. This car previously ran high 8s, keen to start pushing and see what she will do.

10/05/2026

04/05/2026

02/05/2026

Engineering completed on Anthony's 2021 Toyota Supra. The vehicle is now back on the road with:

Large single turbo
Intake
Exhaust

Vehicle successfully tested in-house for:
Emissions test
Drive by noise test

19/04/2026

James' Capri, LS stroker, twin turbo on the hubs...💪💪.

Before we could lay down a run on the new , the alternator left the chat before we could get to a 4 digit dyno number.

Round 1 Score: Car 1 - Unigroup 0. We'll sort the score out in round 2.