15.75 before..16.34 Now ..WTF

[MichaelS78]

I ran a 15.75-15.82 with a stock 96 camaro a4 with a 3.08 rear end...now i have a 3.42 lsd and Im running 16.34...what is going on...temp and humidity shouldnt make that much diff should it.

15.75 run 85mph ~70 degrees, 40% humidity
16.34 run 86mph ~78 degrees, 90% humidity

plugs and wires have 15k on them, engine @ 92k miles
ran 1st as high as i could, held second to 5500, then 3rd i finished...i just dont understand...i put in the 3.42 lsd and tried it out and ****ty times....this is really bothering me...
also, altenator went out a week ago, now with the new altenator,when i put it in reverse my lights dim and the volt gague drops into the red til i rev it(this could be a factor)??

[Brent Neader]

the heat and humidity can play a big factor, im no expert on this, but i went to the 1/8th mile, and before my best was 9.685, 2 days ago best i could get was 9.8 something, and i had a cai and new tires, and the car was stock for the 9.685!
but it was much hotter, im guessing low 70's before, and low humidity
2 days ago it was mid to high 80's, and close to 100% humidity
so it does play a huge role
not really sure on that voltage thing, but it cant be helping

[MustangEater8251]

hot and humid out and my car ran a 15.807 last wednesday. My track is next to a swamp, very hot very humid, lots of nutsweat throughout the night, overall my car did decent. Except for the bad launch, missed shift 17.1 I managed to pull out.

Maybe my car jsut always ran in high humidity?

[MustangEater8251]

btw way how did you know your alternator needed to be replaced?

was it tested at the wire? My alternator wire was corroded and broken and the autozone guy said I needed a new alterator I went ot replace it saw my alternator cable was corroded to hel and broke, I replaced it, worked fine for another 6 months.

check out your alterantor cable I haad horrible corrosion problmes for months. giving me lots of charging problems till I gave up trying to fix it and replaced the entire wire.

[MichaelS78]

The voltage regulator is what went bad in it...Local auto parts tested it for me...got a brand new one for $80