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Old August 28th 2012, 17:32
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Humble Humble is offline
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Join Date: Jan 2003
Location: Boulder Creek, CA
Posts: 758
A two-fer this time around! A couple weeks ago I did a test day with the lotus club so I could dial in the new wastegate and turbo. Turns out I did more for my tires then my turbo. I was having problems gripping the cold concrete and talked to a couple of national competitors (champions too). They suggested that the tires aren't heating up in autox because the sidewalls aren't moving enough. So i kept dropping tire pressures until i hit 16psi in front and 18psi in back. I was picking up more grip and started messing with the MBC to dial back the boost.

At the previous autox my gauge cluster wasn't working so I couldn't record boost pressure. After a frustrating day during the week, i discovered the red top optima battery was toast. New battery under warranty and everything is great now. At the lotus event i couldn't get any less than 24psi no matter what i tried with the MBC. I'm going to by-pass it and run the line right to the wastegate with it's 7psi spring and see if there's any change.

http://www.youtube.com/watch?v=xB0-murW6NA

At the double points race this past sunday it was on! My main competitor and I were tied in points after a close year so far. We raced in the afternoon and my nemesis was on fresh new hoosier a6 tires that had already been scrubbed. We had a large run group and that killed my usual 2-driver advantage of warm tires so we were neck and neck. We traded half second drops each run but in the end he beat me by less than .1 sec. Damn... I have 3 races left to try and make up the points gap.

http://www.youtube.com/watch?v=FB-Ck6rOFbs

Same course, but this camera is at the top of the windshield so you can see the course a better, and hear the engine a bit better. I really love the way the car sounds with the new header and turbo, but it's soooo loud without a muffler. I really, really need to put that back on.

http://www.youtube.com/watch?v=5z87IicpkaY
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