That track looks like it had alot of straights not to mention it looked like the streets in mexico. I would go to a track that is much smoother. Streets of willow is a very good track to test your apexi entries and exits. However, I would only do such an event during winter. Summer is too hot. When its 100 the track temp is damn near 190degrees which will make your tires get too hot too quickly. Also you must learn to control your powerslides. If you can master that you will be able to definitely get better times. Instead of taking your foot off the accelerator and trying to correct them initially, you want to hold them and the car will correct itself.

 

I'm in CO - there are no other tracks within 600 miles except the one from last video, which is worse. If there were, I'd be using them, of course.

 

Nice video! Looks like a scetchy track. LOL to the radio jamin!

 

Yeah, just before I started chasing the STi, we had a double yellow with a WRX wagon being towed off the course, so I cranked up the Sirius radio - great song was playing!

 

Yea that blows. At least you have cool weather haha.

 

Well, sometimes, but it's 90+ at that track pretty much everyday in the summer. It does cool off at night more drastically than in most other places, but we don't get to race at night.

 

Wowzers, well at least it aint 100. hhhahaha

 

Is it just me or was your boost guage reading way higher than 1.5bar in some places... like it was going full 360.

Maybe I'm nuts.

 

It was - I run 26psi, and at 6000', 26psi reads about 30psi on my gauge. Our gauge psi is much higher than actual psi due to having much less atmosphere.

 

Yes there is. Sandia is right down the road from me. That's much less than 600 miles from you.

http://www.sandiamotorsports.com/


What!? That doesn't make sense. What gauge do you have? A regular mechanical pressure gauge should have a linear spring.


d

 

Autometer gauge. Mechanical gauges always read much, much higher up here due to the lack of atmospheric pressure. At sea level, mine reads about 1psi high - now it's 4psi high. I nail 30psi on the gauge, but the MAP sensor shows 26psi.

Haven't heard of Sandia before, but it's still about 400 miles away. The point is there's nothing else within reasonable distance (for me), since I drive to/from the track.

 

Are you sure it's not simply getting increasingly inaccurate with time (as mine have)? If it's a regular boost/vacuum gauge, it should report relative pressure accurately no matter what the altitude is. 1 psi of additional pressure should move the needle the same amount, regardless of abolute pressure. Likewise, the needle should stay zero'd, even if you put the gauge in a vacuum.

At 6000', atomspheric pressure is about 12 psi. Does your MAP sesor read 38.5 psi absolute when you're autometer gauge reads 30 psi or does it read over 40?

d

 

^This is one reason why I advocate the use of a electronic gauge. Mechanicals do read more thoroughly, but after time the mechanisms inside the gauge deteriorate and rendor the gauge inaccurate over time. I had a similar problem long ago.

 

No, I moved here from sea level. My gauge read the same, but my actual boost went down. I had to turn up the boost to get back to where i was at sea level according to the map sensor, but my gauge reads much higher. This is a very normal phenomenon.

 

Right, that's what I'm saying. By 'boost' I meant intake manifold pressure relative to the outside air. This is, of course, what the gauge measures. The MAP sensor measure absolute pressure.

We're simply talking about different things. You up'd the boost to get the absolute pressure back up to where it was a sea level. The MAP sensor reads the same. I would argue that you are in fact running more boost, but it's all semantics at this point.

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