Hello and Welcome!
A Message from Rick Lance.
My Name is Rick Lance and making stuff better, stronger and faster is my passion. Every since I could walk I've been hot rodding anything and everything I could get my hands on I've learned a lot over the years and I'm excited to be in position to pass on my years of experience to our community. After many years of owning a chassis shop an accident forced me to slow down. Well, just a little :). I decided to get more in to the manufacturing end of things and re-opened ProFab Performance with one goal in mind, Total Performance for the Duramax engine. I'm very dedicated to what I do. I'm concerned about my customers and I truly want my products to work for each and every one of you.
Let me know if I can help in any way.
Rick Lance
A Simple Comparison
Just wanted to show you guys why I'm doing this stuff. Figured a cutaway would be a good place to start with the manifolds. These are actual Duramax manifolds we cut in half.
The top one is the stock one, and the bottom one is mine. Of course I picked on the drivers side because it looks the worst on the outside, but I was still shocked at what I found. I've numbered the "problem" areas to explain my thoughts on them.
#1. Notice how the runner is actually smaller than the port opening itself
#2. This little "crook" in the casting was a feeble attempt to direct the exhaust rearward I guess
#3. No "crook" here. If you look at it you can even see where some of the exhaust might actually be diverted the wrong direction because of the dimple for the steering column
#4. This is what I call the old right angle "dump and run". #3 suffers from this also.
#5. This one and #6 really get me. Notice how large the main runner is here with only 2 cylinders in the manifold so far
#6. Now notice how small the main runner is here after 3 cylinders
Now spend a little time looking at mine. I can find a couple of flaws in the design, but I hope you can clearly see why mine will flow better.
Now lets move on to the up pipes. Click on the Read More button for the rest of the story.
Important Information
- Warranty
- Payment Options
- Shipping
ProFab Performance products are warrantied to be free from defects in materials and workmanship for a period of 1 year from the date of purchase. We will replace or repair a defective part at our discretion. We will not be responsible for freight charges, labor charges, other expenses or inconveniences, or consequential damages caused by failure of the product.
In addition, this limited warranty becomes void if products show evidence of:
- Mishandling
- Bending, welding, or modification of parts
- Excessive heat
- Any repairs performed by those other than ProFab
Paint, gaskets, bolts, and cosmetic appearance are not covered under the terms of this warranty. A copy of the original invoice showing the purchase of the product is also needed.
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Please Contact Us if you wish to pay by Check, Money Order, Visa, or Mastercard and do not wish to use Paypal
We normally use FedEx. They have very competitive rates. On occasion with a small part we may use the USPS.
Outside the Continental US will have extra shipping charges applied as we know them.
Dmax Central
DmaxCentral is the Official Forum of ProFab Performance. Rick maintains a special section where he posts performance data and answers questions about his line of Performance Parts. Here's a handy link.
Customer Feedback
6-14-09 IR
Since I know the tuning in both trucks, appears that the chargers and headers/up-pipes are the difference, that and the great suspension work on the truck allowing the launching which carries through to the stripe.