Jodecy ordered a set of Greg Dupree test pipes and I came on a great deal for Stillen Stainless test pipes that I couldn't pass up. Here's a little comparison...
Stillen on left (In hand) and Greg Dupree on right (on hanger).
Notice the flanges on the Greg D. unit are much thinner. Thinner = easier installation! The large flanges were a pain in the @$$ to install. If you want to know why it took 3+ hours to do these pipes, this is the main reason. FYI, Gregs testpipes come with new nuts & bolts for the install, Stillens do not. Also, with the thicker flange, the perfect length for the bolts on the Stillen unit is 35mm. Guess what, Lowes only carries 30mm and 40mm. Translation... PITA to get to work!!! Notice the Stillen unit has the AIV connection (and a plug for the connection if you do not use it), the Dupree unit does not. Point = Stillen.
Notice the Dupree unit has the thin hanger bracket that slides into the rubber slot under the car. The Stillen unit does not have this. The only thing holding each TP on is the 5 bolts. Point = Greg Dupree.
Jodecy got the aluminized steel TP's and put high temp. coating on them to prevent rust. The Stillen TP's are stainless. Point = Stillen. Unless you order the Greg Dupree Stainless Steel units (which are cheaper), then... Point = Greg Dupree. My final decision is to go with Greg Dupree test pipes unless you find a KILLER deal (I really got lucky) on Stillen units. Greg Duprees are way easier to install and cheaper to buy (when comparing stainless vs. stainless). I won't even mention the ghey warning emblem that Stillen spot welds on their TP's "off road use only". GHEY. Thought I would throw this in too... here are test pipes compared to normal cats... You can see the HUGE improvement. Lighter also.
Link to the Techtom MDM-100 Group Buy going on right now! Check the General Forum or Classifieds for the latest updates. 
|
Not all test pipes are created alike (Greg D vs. Stillen) - 
