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The mkiv Supra Owners Club

Max possible boost with 1st cat still in?


Gaz6002

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Hi all,

 

What is the max boost you can run on a j spec TT6 with the first cat still in?

The reason I ask is that the person I bought the car off says he ran the car at 1.3 bar, and ran a 10.58 sec run at santa pod. But the car still has the 1st cat!

Im confused as he says he has slips to prove it, but I thought you could only run 1.1 bar with the cat in place? I certainly cannot get to 1.2bar, let alone 1.3! So whats the deal here people?

 

cheers

 

Gaz

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Gaz I've gotta say that I did wonder when this went up for sale as it said blisteringly quick so I was suprised to read the other day that you have one of the cats in and nope there's no way stock tubbies would manage that time, even low 12's would be realisticly out of range and 1.3bar is too much for j-spec tubbies anyhow, any chance they are hybrids though?

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