Dear Customer,
Thank you so much for your feedback!
We’re glad it worked great for you, and appreciate your support!
Best Regards,
Scarlett
spelabautopart Customer Support
[email protected]
WC
Walter C.
turbo downpipe 2015.5 Duramax…
My turbo downpipe for my 2015.5 Duramax Denali is amazing.. very simple to install and it made a huge difference on performance and sound.
Response from SPELABApr 21, 2026
Dear Customer,
Thank you so much for your awesome feedback!
We’re thrilled to hear the downpipe fits perfectly, installs easily, and delivers great performance and sound improvements on your 2015.5 Duramax Denali.
We appreciate your support and hope you enjoy the enhanced driving experience!
Best Regards,
Scarlett
spelabautopart Customer Support
[email protected]
RK
Ronnie K.
Great products
Great products
Response from SPELABApr 21, 2026
Dear Customer,
Thank you so much for your kind words!
We’re glad you love the product and appreciate your support.
Best Regards,
Scarlett
spelabautopart Customer Support
[email protected]
NG
Nickolas G.
Shipping was fast
Shipping was fast. Product was easy to install and great quality. Would for sure shop again.
Response from SPELABApr 21, 2026
Dear Customer,
Thank you so much for your wonderful review!
We’re thrilled to hear the shipping was fast, the installation was easy, and that you’re satisfied with the quality.
We truly appreciate your support and look forward to serving you again soon!
Best Regards,
Scarlett
spelabautopart Customer Support
[email protected]
GY
Gordon Y.
Very good product
Very good product. Well built an fit perfectly.
Response from SPELABApr 17, 2026
Dear Customer,
Thank you so much for your kind feedback!
We’re thrilled to hear the product is well-built and fits perfectly,
and we truly appreciate you taking the time to share your
experience.
Best Regards,
Scarlett
spelabautopart Customer Support
[email protected]
CU
customer
Great quality and fast shipping
Great quality and fast shipping, my support always is with usa brands
Response from SPELABApr 17, 2026
Dear Customer,
Thank you so much for your support and kind words!
We’re thrilled you’re happy with the quality and fast shipping, and we truly appreciate you standing with USA brands.
Your trust means a lot to us!
Best Regards,
Scarlett
spelabautopart Customer Support
[email protected]
JD
Jeffery D.
I ordered everything i needed to Make…
I ordered everything i needed to Make my Duramax a powerhouse. Thier efi live autocal was great. I did have to pay $40 tariff fee on that because it came from Canada but im sure there is a way to get that back. The 4 inch exhaust, down pipe, up pipes, hot side pipe, egr delete and reroute alomg with the new cold air intake perform excellent and they give my truck the power and sound I was looking for. I look forward to working with SPELAB for future builds. I hope they get transmission tunes in the future and decals because I would love to advertise where I got my performance parts on the truck. Also, a sponsorship program for serious builders would be great along with lighting and wheels/tires. I had to shop around during this build but would have preferred to do a one stop shop at SPELAB
Response from SPELABApr 17, 2026
Dear Customer,
Thank you so much for taking the time to share such detailed and insightful feedback—it truly means the world to us!
We are absolutely thrilled to hear that our EFI Live Autocal tuning system, 4-inch exhaust, downpipe, up-pipe, hot-side pipe, EGR delete and reroute kit, and cold air intake system have delivered the powerful performance and commanding exhaust note you were seeking—transforming your Duramax engine into a true "power beast"!
We are deeply honored that you placed your full trust in SPELAB for your vehicle modification project, and we are also incredibly grateful for the valuable suggestions you have provided.
We are currently working diligently to expand our product line to cover a wide range of categories, including transmission tuning, official decals, lighting solutions, and wheels and tires. Additionally, we are in the process of planning a sponsorship program specifically for seasoned automotive enthusiasts.
Our ultimate goal is to become your go-to, one-stop destination for all your performance modification needs.
Thank you once again for your unwavering support and loyalty. We look forward to continuing to provide you with exceptional service for your next modification project!
Best Regards,
Scarlett
spelabautopart Customer Support
[email protected]
CS
Caleb S.
Item came as described and installed as…
Item came as described and installed as expected.
Response from SPELABApr 17, 2026
Dear Customer,
Thank you so much for your feedback!
We’re glad the item arrived as described and installed smoothly.
Enjoy your purchase!
Best Regards,
Scarlett
spelabautopart Customer Support
[email protected]