Nelson Performance 10034 Roosevelt Avenue, San Antonio, TX 78214

"Purchased the tuning product, not only it it fail to work properly it erased the ecu. The companys responce time is about 1 reply a month, or 1 reply per 2 months. After 7 months of this I sent everything back and requested a refund. I have been ignored. I'm over $700 deep into this company and the only thing I received was headache. If I could get a refund this review would no be necessary."

"Took my 2001 Silverado in for a tune and a check engine light. They fixed the wiring issue I was having and had me back on the road the same day. The mechanic and the office crew were all very friendly and professional and gave me straightforward advice instead of trying to sell more parts or unneeded accessories. My truck is running great, and I'll be coming back again with my next project."

"From the scheduling to the professional knowledge these guys have to offer, 5/5 stars easily. Their expertise of the LS base GM trucks is phenomenal. They got my Silverado running and performing in tip top shape fast. Highly recommended."

"I've been going to Nelson performance for years and they've done the tuning for all of my vehicles. They just installed headers and a tune on my camaro and ill be back to tune my wife's camaro and install a cam in mine."