I am really impressed with these guys.
Background:
I recently purchased a whipple for my truck and installed it. I decided to not use the Whipple EFI system and went with 42# injectors and a tune. Problem was, the bypass valve was always open and I would barely get any boost.

I did some research and called emailed Nelson. Within 2 hours they had sent me all the info I needed.
Keep in mind I have never purchased anything from them.
(But that will change soon after my experience)

Thanks again,

Larry

 

Allen is a good guy!!

 

they do awesome work as well!!!!

 

x2