Jimmy power chips.

[gunsn88]

hey i have a 1993 gmc jimmy, im looking into a power chip for it, here are the sites im looking at for them.
http://www.performancechipsdirect.com/GMC/Jimmy/

http://slrmotorsports.com/shop/l/GMC-S-15-Jimmy-1990-1991-Performance-Chip.html

i have the aringinal moter in it and i am asking for help because i dont want to mess my truck up, the chips say it will increse my hp and my tq, any help or thoughts?

 

[2002 GMC Sierra 87]

Power Chip Sierra V6

has anyone heard of this company?

<a href="http://www.performancechipsdirect.com/GMC/Sierra/" title="GMC Sierra Performance Chip">GMC Sierra Performance Chip</a>