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Volvo S40 T4 with Holset for 2011 season!!!


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Marko, how high boost did you go with HX35 and 98 RON fuel? I remember that not higher than 2.0 bars?

If so, why not higher?

You switched to E85 pretty quickly. Because of temps?

With 98ron fuel my engine was very detonation sensitive and thats why i swapped to E85 and problem was solved. Later i realised that detonation was because high exhaust backpressure so with 400-450hp its okay to drive with 98 on hx35. You will get that power with 2.0bar boost. :)

My friend drove that 320km/h on standing mile with 812hp and pro55 holset, its record for standing mile for x40/all volvos. :)

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I wonder what would be theoretical maximum speed if the limiter would be around 9500-10000 rpm? :)

You reached 300 km/h with 7500 rpm.

My hard rev limiter is on 8100rpm which is 200mph 322km/h. That it will do 100% because 300km/h->310km/h took only 200m. :) 350km/h is 8800rpm but it wont go that fast...

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