Quick question about boost

[Stormtrooper77]

Will your boost increase under the following conditions?

1. Colder weather
2. Higher octane gas

Just like that, quick and easy.

[Aaron]

gas no

cooler weather maybe just a little under 1 psi.

[II-Savy]

You don't make more boost with colder temps, you make more HP with lower temps. I think it's 1HP, for every 10 degrees down. Higher octain (sp) doesn't give more HP also. It will help if you over boost and don't want to detonate (sp).

[Stormtrooper77]

Well, my stock boost has gone from 6.5 to about 7ish (consistantly now) and once I saw 7.5. The only changes have been weather and gas. Not a bad thing I guess, but just wanted to know.

[II-Savy]

yea maybe someone can help me out here. More colder air shouldn't really give you more boost, but if our computer/sensors saw a better fuel ratio/octain/air temp , maybe our cars can adjust boost up and down on their own. Our cars must look at the situation and adjust accordingly up and down. I don't know....I could be off here. I do know though that every 10 degrees down, you get another 1hp.

[Stormtrooper77]

Hahaha! I gain 6-7hp from summer to winter. But yeah, the increase in boost is boggling.

[omega0021]

I noticed that a few mornings ago...my MSP took on an all-new form, boosting a lot easier in first gear. She really seemed like she was a totally different car in the colder weather, no bogging at all.

[MazdaSpeedTurbo]

i have just passed the 32,000 mile mark about 1200 miles ago my car started boosting between 9-11 psi i am completely stock anyone know why this could be .. it feels great with the power it produces.

[Aaron]

mine started boostin 10psi stock too.

[BlkZoomZoom]

Boost will increase in cold weather. Thats why they call it "cold dense air". Thats also why VW gives you two different specs. for boost levels below a certain temp. and above.

Mazda just says anything above zero is spec.