Performance Chip Questions

hey,, new here,, and have some questions about P-Chips for my 1997 Jetta Gt,,,.. 2.0L, 8v

Best manufacturer? Neuspeed, APR...(not sure what is avaible for my car besides Neuspeed)
Problems with chips in cold weather? (Edmonton)lol
Warranty ?
Chances of fuckin up the car? Common problems?
Kind u switch them back and forth with the original? (in winter)
Recommendations?

thanx a ton

GIAC.com, Autotech.com, both make good chips, I jave a GIAC in my GLS 2.0 and I love it. Nuespeed is fair.

GIAC.com, Autotech.com, both make good chips, I have a GIAC in my GLS 2.0 and I love it. Nuespeed is fair.

I have had the p-chip on my 97 gt for 3 years. no problems. works GREAT with my header,cam,cam gear, underdrive crank pulley, big bore intake. heat shield and intake..



I live on colorado.. its has been cold here