Listings with DIESELSITE as the supplier will be backorders due to Hurricane IAN. Feel free to email us ahead of time if you have any questions.


Contact us

Quadstar Tuning LLC
507 Dodds Rd
Butler, PA 16002
support@quadstartuning.com
This is the address to send all PCM's to. UPS or USPS preferred.
Online sales ONLY. We do not do retail sales or vehicle service.
Email is our preferred method of contact for general questions. Please double check your email address before submitting the form below or our replies may not come through.
All contact must be initiated via email initially.  This helps us triage requests within our small team. Thank you!