def get the before and after. Not interested n test pipes before and ART pipes with tune after

 

Definitely. Baseline dynos first, then re-tune and see what the gains are.

 

Well guys, just got back from my re-tune over at Church's Automotive. Here's the dyno graph:



The lowest run is what I made the first time I got my Osiris tune there, a couple months back. The only changes to my car since then are swapping my gamma axle back to the shockwave v2 axle back, and my hfc's to my ART pipes. I know, I know, you can't really compare that run back then to this run this morning, since it's on different days and whatnot, but it's there just for a little reference.

The car feels like it revs fast than before, especially in 2nd or 3rd gear from 2k-4k.
I've asked Shawn to chime in this thread to clarify a few things, hopefully he will when he has some time.

 

Hi all, hey fab. Just a quick note. We found that we were able to run more cam timing down low with the ART pipes. In addition, the car had leaned out slightly, so we richened the mixture back up. With no cats in place, it also tolerated another 0.5-1 deg of ignition advance.

Keep in mind that on the Dynapack, torque converter slippage can skew low rpm measurements somewhat (since the engine rpm goes up, but Dynapack measure hub rpm which does not during converter slip). However, you'll note that all three runs were done in the same way and the ART pipes, even before retuning (adding more cam advance) had an advantage already.

Interestingly enough, we did not see any high rpm power advantages before retuning. However, warm air intakes (any underhood open filter) can be a real PITA when it comes to correction factors since they're always sucking warm air even on cold days. Either way, I'm very impressed with the results. I had a chance to see some of Tony's early work on the ART setup and it looks like he's really made it perform.

p.s. - I'd really love to see them on a manual tranny so we can dyno from 1500 rpm or lower without converter slip