The KOVAL EVO is one of the most successful roll racing cars in Australia and has seen a few iterations, owners, and a couple of catch cans over the years, as well as 80-90PSI of boost and up to 11,000rpm.
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At GTR Fest, where Andre pretty much only looked at EVOs (he knows his type) we caught up with Dom Rigoli of Tony Rigoli Performance (TRP), a world-famous in Australia full service workshop with a proven history of getting incredible power out of many platforms including this venerable EMtron controlled 4g63.

Dom's answer here are short, sharp and accurate covering a range of topics from dry blocks, billet vs cast, head cylinder sealing with bronze aluminium rings aka fire rings along with some insight into what a car like this might do if it was fully setup for drag racing rather than the street too.

Previously, the car had made 1200hp at the hubs but now pushes over 1500hp and uses methanol or ethanol blends depending on the legalities of the event/location with 8.8 passes so far and plenty more to come if the owner wants to upgrade the car to safely compete at 1/4 racing, which are requirements that differ from roll racing events.
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TIME STAMPS:
0:00 - Andre Loves An EVO
0:10 - KOVAL EVO
0:22 - Horsepower & Speed
0:45 - Not Caged
1:18 - Engine Build 4G63
1:38 - Why Not Billet?
2:50 - Billet Vs Cast For Roll Racing & Street
3:41 - Water Jacket & Bore Flex
4:13 - Dry Deck Setup
4:56 - 2.2L 10,000 RPM
5:49 - 2.0L, 2.2L vs 2.4L
6:08 - Aluminum Rods Vs Steel Rods
7:01 - 1200HP Maintenance
7:30 - Head Sealing | Fire Rings
8:12 - Fire Rings/Aluminium Bronze Rings
8:51 - Catch Can-ception
9:30 - 80-90 PSI And Blow By
11:30 - Fuelling | E85 or Methanol
11:44 - E85 Vs Methanol & Boost
12:22 - EMtron ECU & Triggering
12:52 - Crank & Cam Trigger
13:15 DBW & Boost Control
13:47 - Why Not A Wastegate?
14:09 - Boot By Gear & Torque
14:25 - Drivetrain Setup
15:49 - Gearshifts & Torque Reduction
16:52 - Would Be A 7 Second Setup If Not Street Car
17:47 - Thanks Dom
17:54 - BUILD.TUNE.DRIVE
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