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Jag7799
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Brisbane
Registered:
July 2002

Re: how much does heat of the day affect power?

Thu, 30 September 2004 23:49

ke382TG wrote on Fri, 01 October 2004 09:44

Higher air intake temps = less power (most significant and noticeable in forced induction vehicles). Do a search and you will find some generic estimates of roughly how much power decreases as temperature increases.

Higher ambient temps and road surface temps = more traction (makes it harder to spin the wheels). That's why the burnout before running a 1/4 can be helpful for traction, as most decent tyres will work better with some heat put into them (especially race compounds)

Higher air temps = slight decrease in boost levels, hotter air is less dense (most noticeable when running higher boost levels > 15 psi)

So in conclusion, it's normal for your car to feel a little slower on a hot day, and it's normal to not break traction as easily too. Just make sure there are no other probs adding to this.

thats what im worried about
also now if i rev out 1st(near 7k rpm)
and then go into second.. it drops in nice.. then the rpm goes down and loses all the boost it would have kept and has to build from 10 vacuum again
makes it really sluggish going into second

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