Frosty

iTrader: (17)

How much of a role do they REALLY play here? I've never run my car in the heat like this.

Before headers and tune I ran a 13.04@108 in May

Tonight with it being around 85 and climbing humidity after headers and tune I ran a 13.2@106.

Not trying to make excuse but do you think the weather fucked me over?

01z28blood

iTrader: (2)

I can not tell you for sure how much they will effect you. But I took my 01 Z28 A4 to the track in March and April and ran 13.10 to 12.99 with speed between 107.9 to 108.5. I went back in June drove 3 hours made two passes no cool down and ran 13.6 and 13.5 at 105.7 and 106.0. Heat index was around 106 and humidity was high.



01 Z28 A4(2.73:1): SLP lid, fra, descreened Maf, and a flowmaster muffler (stock exhaust)

SUX2BU

iTrader: (14)

It makes a HUGE difference, on a cool night i run 7.0's @ 96.
In the middle of a 100 degree day i run 7.3's @ 93.

ChevyGoldfinger

Heat & Humidity can easily cost you 0.5 to 0.7 in the quarter mile. (all other things being equal) BTW, Bryan @ PCM-for-less's last name is Herter Noticed in your sig you spelled it Herta. Just an FYI. . . He really knows his stuff, good choice. Wish he lived closer to my area.

Frosty

iTrader: (17)

DOH! Thanks for that...guess I should check for typos.

I just wish the weather was cooler...kinda pissed me off I ran 2 tenths and 2 mph SLOWER after the headers and tune.

Torkman15

iTrader: (2)

Also remember the more power you make the tougher it is to make it hook if you havent made upgrades in the traction dept as well. Good luck, Tom

Villain281H

iTrader: (5)

I'd say anywhere from 3-5 tenths in the 1/4 is normal from good DA & weather to bad (example: I'll run 11.30's at 116-117 mph in the winter months with 40-50 temps and 30-40% humidity, while summertime with 80-90 in the temp/humidity dept I'll run 11.60's at 113-114 mph). The rule of thumb is every 1000 ft of Elevation or DA is 1 tenth (some cars get more, some get less).

Hope this helps!

Derek

Frosty

iTrader: (17)

I was pulling around the same 60' time. I'm not pissed about the ET..I hated that I ran 2 mph slower. Oh well...damn mother nature lol