{"version":"1.0.0","episode":{"title":"108: Twin-Charging — Good Idea or Unnecessary Complication?","url":"http://getcarcurious.com/episodes/108-twin-charging-good-idea-or-unnecessary-complication","audioUrl":"https://www.buzzsprout.com/1755412/episodes/14499545-108-twin-charging-good-idea-or-unnecessary-complication.mp3","description":"Anyone with even a passing interest in Time Attack has likely heard of Norris Designs, a UK-based tuning company probably best known for its insane north-south oriented, twin-charged, short-wheel base Evo IX time attack monster. On this episode of Tuned In, we sit down with founder Simon Norris to get some insight into this brain-melting build, plus much, much more.Use “NORRIS100” to get $100 off our HPA Tuning Starter Package: https://hpcdmy.co/starterbLike many of us, Simon Norris began his love affair with cars and motors early in life, pulling apart engines on the kitchen table as a child. While there was a slight detour after leaving school to study engineering, it wasn’t long before Simon spied a new opportunity in the burgeoning JDM aftermarket tuning scene just as he was cutting his teeth working in a Nissan dealership in the mid-nineties. So, after seeing how others were starting to mess with tuning ECUs, Simon decided he could do better, and promptly opened Norris Designs way back in 1998.Nearly three decades later, Norris Designs is one of the biggest names in the UK tuning scene. In this conversation, we first kick into the business side of Simon’s life, finding some great insight into what works and what doesn’t when it comes to building a company in the motorsport industry. We next get into tuning in general, where Simon discusses different ECU options, dyno styles, and the many factors that can cause discrepancies between individual dyno runs. From there it’s on to the real meat and potatoes of this episode — Simon’s incredible Mitsubishi Evo IX. With its north-south-orientated billet supercharged AND turbocharged 4G63, the AWD Evo is an engineering masterpiece that absolutely tears up any race circuit it’s unleashed upon. Simon does his best to answer the many questions we have about this car in an attempt to get to the bottom of what makes this shortened and roof-chopped weapon tick, and why Simon made the choices he has with this build. Even if Time Attack cars and Mitsubishis aren’t your thing, this episode drops some great knowledge and is well worth a listen regardless of your chosen motorsport or what type of car you’re into. Follow Norris Designs here:IG: @norris_designsFB: Norris DesignsYT: NorrisdesignsWWW: norrisdesigns.comDon’t forget, you can use “NORRIS100” to get $100 off our HPA Tuning Starter Package: https://hpcdmy.co/starterbTime Stamps:3:41 How did you get into cars?8:25 Did you have much industry experience before starting your business?12:39 What sparked the interest in JDM cars?16:18 How did Norris Designs grow?25:56 Overview of Norris Designs today31:12 What does your day-to-day look like at Norris Designs?38:36 What vehicles are you specialising in?42:54 How did you learn to tune?52:44 Are you relying on knock control and close loop fuel control?57:35 Did you start with an engine dyno or rolling road?1:01:17 Do you have fixtures and harnesses for quick and easy engine dyno setups?1:02:27 How accurate is the engine dyno?1:10:23 Repeatability issues with rolling road1:14:16 ECU of choice?1:20:20 What is a short wheelbase Evo 9?1:24:33 Engine package1:34:45 Billet blocks for street applications?1:38:41 Twin charge setup1:44:24 Transmission1:50:39 What’s next in the development of the car?1:52:33 Lap time difference with new aero package"},"annotations":[{"startTime":308.831,"endTime":318.477,"type":"car","title":"Fiat Uno","url":"/cars/fiat/uno","image":"https://upload.wikimedia.org/wikipedia/commons/f/f1/1987_Fiat_Uno_Fire_%2835112300564%29.jpg","quote":"... first car was an Austin Mini and then the little Fiat Uno, and then the story of kind of Norris Designs cam...","canonicalId":"car:fiat:uno","priority":0.5,"confidence":1.0,"source":"fuzzy","data":{"imageAttribution":"Wikimedia Commons / CC BY 2.0"}},{"startTime":308.831,"endTime":318.477,"type":"car","title":"Nissan 200Sxs","url":"/cars/nissan/200-sx","image":"https://upload.wikimedia.org/wikipedia/commons/f/f0/1994_Nissan_200_SX_Turbo_%2814911932756%29.jpg","quote":"...hen the story of kind of Norris Designs came from Nissan 200SXs, so the 1.8 Turbo S13.","canonicalId":"car:nissan:200 sx","priority":0.5,"confidence":0.96,"source":"fuzzy","data":{"imageAttribution":"free photos & art (CC BY 2.0)"}},{"startTime":401.68,"endTime":420.493,"type":"car","title":"BMW Csl 30","url":"/cars/bmw/3-0-csl","image":"https://upload.wikimedia.org/wikipedia/commons/5/57/BMW_E9_%2801%29.jpg","quote":"Actually, some of what you just mentioned mirrors my own background. I did a Bachelor of Technology in Product Development and once I'd completed that degree I was back home with my parents studying for a Masters, and at the time my old man had I think it was an old classic BMW CSL 3.0 in line six.","canonicalId":"car:bmw:3.0 csl","priority":0.5,"confidence":1.0,"source":"fuzzy","data":{"imageAttribution":"OlliFoolish (CC BY-SA 3.0)"}},{"startTime":516.68,"endTime":525.68,"type":"car","title":"Nissan Z32S","url":"/cars/nissan/300-zx","image":"https://upload.wikimedia.org/wikipedia/commons/1/1f/1990_Nissan_300_ZX_%2827761871174%29.jpg","quote":".... So obviously my love for 300s, ZX, twin turbos, Z32s and S13s was kind of born from seeing those in th...","canonicalId":"car:nissan:300 zx","priority":0.5,"confidence":1.0,"source":"fuzzy","data":{"imageAttribution":"Greg Gjerdingen from Willmar, USA (CC BY 2.0)"}},{"startTime":922.68,"endTime":940.66,"type":"car","title":"Nissan R32","url":"/cars/nissan/skyline","image":"https://upload.wikimedia.org/wikipedia/commons/1/18/1984_Nissan_Skyline_R30_RS_Turbo_%2815818918502%29.jpg","quote":"...nfortunately also from the Nissan Stables, is the R32 GTR and I remember, with not a lot of fondness, t...","canonicalId":"car:nissan:skyline","priority":0.5,"confidence":1.0,"source":"fuzzy","data":{"imageAttribution":"Wikimedia Commons / CC BY 2.0"}},{"startTime":922.68,"endTime":940.66,"type":"car","title":"Nissan Gtr","url":"/cars/nissan/gt-r","image":"https://upload.wikimedia.org/wikipedia/commons/7/73/2009_Nissan_GT-R%28front%29.JPG","quote":"...tunately also from the Nissan Stables, is the R32 GTR and I remember, with not a lot of fondness, the t...","canonicalId":"car:nissan:gt-r","priority":0.5,"confidence":1.0,"source":"fuzzy","data":{"imageAttribution":"Stande99 (CC BY-SA 3.0)"}},{"startTime":1232.705,"endTime":1247.003,"type":"car","title":"Holden Commodore","url":"/cars/holden/commodore","image":"https://upload.wikimedia.org/wikipedia/commons/c/c0/1992_Holden_Commodore_%28VP%29_Executive_sedan_%282008-10-13%29_03.jpg","quote":"...O and then more along the lines of the late model Holden Commodore, which is an Australian domestic market brand, bu...","canonicalId":"car:holden:commodore","priority":0.5,"confidence":1.0,"source":"fuzzy","data":{"imageAttribution":"Adam (CC BY-SA 2.0)"}},{"startTime":1434.604,"endTime":1443.524,"type":"car","title":"Mitsubishi Evo","url":"/cars/mitsubishi/lancer-evolution","image":"https://upload.wikimedia.org/wikipedia/commons/3/3e/2007_Mitsubishi_Lancer_Evolution_IX.jpg","quote":"... would be impossible if I just said, hey, we tune Mitsubishi Evo, that's it. 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It's the short wheelbases.","canonicalId":"car:audi:quattro","priority":0.5,"confidence":1.0,"source":"fuzzy","data":{"imageAttribution":"kieranwhite599 (CC BY 2.0)"}},{"startTime":5690.106,"endTime":5702.5,"type":"car","title":"Ford Bullitt","image":"https://upload.wikimedia.org/wikipedia/commons/9/90/2020_Ford_Mustang_Bullitt_2.jpg","quote":"...e're only talking about the 4G63, 4g64 block that Bullitt do, but we also, when you're at that sort of leve...","canonicalId":"car:ford:","priority":0.5,"confidence":1.0,"source":"fuzzy","data":{"imageAttribution":"Calreyn88 (CC BY-SA 4.0)"}},{"startTime":6056.581,"endTime":6066.081,"type":"car","title":"Dodge Charger","url":"/cars/dodge/charger","image":"https://upload.wikimedia.org/wikipedia/commons/5/54/1966_Dodge_Charger%2C_front_right%2C_09-27-2025.jpg","quote":"...nd then the bypasses start to open. 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