EdgePerformance As

09/06/2026

Eddie which we bought a Vans RV-4 from several years ago shows of his Orion CUB with EP912STi 😊👌🏻

This was Eddie’s personal Orion Cub, running an Edge Performance se...

08/06/2026

Testing of our Rotax 912iS / EP912STiS_Gen2
AUX Alternator is completed.

Output graph attached 📈

08/06/2026

There will be a Risen Super Veloce soon to break the sound barrier with our customized EP918Ti (185HP) 😎💪🏻

06/06/2026

Flight Design CTSLi - power by EP912STiS_Gen2 (160HP).

Eprops Glorieuse CS propeller.

First flight today with some impressive numbers.

Some small tweaks and she is ready for the next flight.

05/06/2026

Today we finished the testing of our new turbine housing that we have been developing over the last 12 months or so.

The current aftermarket turbo frame which we have been using for years works ok, but there was nothing on the market that was perfect for our needs. So it was always a compromise.

An aircraft engine varies in so many ways compared to automotive and power-sports engines.

Some of the features we wanted to improve on the Garrett turbocharger was: less back pressure, better boost controllability, a stainless steel housing for longevity, and improved flow rate of the internal wastegate.

Even with some machine work and porting of the stock internal wastegate, at sea-level and especially during very cold days with high pressure, boost creep was a concern. The pilot had to monitor boost pressure during take off. Especially those with a CS propeller being able to turn 5800rpm, generating maximum amount of exhaust gasses. The current turbo frame on our dyno would creep up towards 150-160Kpa (45-48inHg) when set statically at 5800rpm with the IWG wide-open.

Testing showed that we did not loose any performance at all, which was a huge surprise given the amount of resources that goes into developing performance turbo chargers by major brands like Garrett. When compared at 5800rpm, 28c IAT and 44.0inHg MAP, the stock and EP turbo produced the exact same amount of power with a lower EGT and slight reduction in fuel flow.

With the new turbine housing we can achieve to bypass so much more exhaust that it only produces 112Kpa (33.7inHg) boost at 5800rpm.

Why is that important you may ask? Well, for a few reasons.

1. The ECU can ensure that the turbo will not over boost, even under the worst possible conditions.

2. In case of knock detection the ECU can both re**rd timing, add fuel and reduce boost. A 3-stage knock strategy.

3. The turbo can now be used as a turbo normalizer. We will test it on a stock 912ULS and likely develop a simple ECU that can control the turbo and allow for normalization (30-32inHg MAP) up to around 25.000’.

4. Less back pressure equals better efficiency, lower EGT and improved fuel efficiency.

The turbine housing will be available as a direct replacement to existing turbochargers 4-5 years back in time.

04/06/2026

Anyone out there with a crate new Jabiru 3300 Gen4 that wants to benefit from a free installation and dyno testing of our new EFI/IGN kit?

We would use it to make photos for our instruction manual and some showcase photos once completed. You’ll get a discount on the kit, free installation on the engine and dyno testing at zero cost!

We’d be happy to order a new one as well if there’s anyone ready to pull the trigger 😊👍🏻

04/06/2026

Part.1 - EP912STiS_Gen2 Turbo and Alternator development testing.

03/06/2026

SOLD

❗️EP912STiS_Gen2 engine available for sale.❗️

Built on a zero time overhauled Rotax 912iS model 2.

160HP / 197Nm. Heavy-duty iS crankcase, welded crankshaft, 916iS forged pistons, sodium filled exhaust valves and piston/gearbox oil spray nozzles.

Dual alternators w/2x rectifiers, Gen2 EFI/IGN control, knock sensor, 4x EGT, FP, FF, OP, OT, TPS, CLT, MAP, IAT sensors installed and included. Connects to EIS/EFIS easily via CANBUS.

Comes dyno tested and tuned with ring mount, oil tank, exhaust, ECU, dual fuel pumps, HP filter, AN PTFE hose & fittings and starter relay.

2000HR TBO / 1 Year/200HR Warranty

Retail price €42.975 - For sale at only €31.500 including DHL world wide shipping.

Contact us by email for more details at:
post (a) edgeperformance.no

29/05/2026

For those wanting to install a E-props with electric governor on the 917/918 or any Gen2 engines, here are the steps.

Add TACH RPM wire from ECU connector GP Out #8

Insert into governor “LOV RPM” IP.

Set Tachometer cyl. count to 2.

27/05/2026

How violent is a 912ULS start you may ask?

Quite, but the planes and engine mounts are designed to handle it.

But make sure to check your engine suspension during scheduled maintenance as this is a highly stressed component.