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The mkiv Supra Owners Club

The next step (more power)


Guest Dazzi

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After a successful conversion in January running 7.5psi I am starting to shop for parts to increase the power. I currently have a Whifbitz manifold, and Turbosmart Hypergate 45 wastegate which will be staying but I would like to ditch the .70 turbo and go for a Borg Warner S360. Other parts on my list are Siemans Deka 650cc injectors, tt head gasket and arp head studs.

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Couple of questions really. I'm looking to get around 500HP (don't worry I'm running a hybrid auto). I know every car is different but what kind of boost am I looking at to achieve this?

The Turbosmart waste works by adding multiple springs to increase the boost so not sure if I should do this or get an electronic boost controller. Last question I think is head gaskets. I've seen so many different mm head gaskets ranging from 1.3mm to 2.5mm. Which is best to go for. I understand the thicker the gasket the more power you can push but as mentioned I'm only after 500HP to keep things simple and not to make the car a pig to drive.

 

Thanks in advance :)

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