I was at DC Performance when Bad Boyzz Garage had their 2006 GEN III there getting dyno tuned.
Since BBG distributes the ACRX headers, it was pretty obvious he'd have them on his 2006 coupe. What wasn't expected was the car hit an easy 626 rwhp @ 6000 rpm and 600 lbs of torque at 4800 rpm. This was with a stock fuel system and injectors...probably another easy 25 to 30 rwhp available with more fuel and a bit more rpms before cutoff.
The mods were BBG's head, intake, cam and ACRX header package on 91 octane (Chris at DC Perf did a great job tuning that monster).
Maybe BBG can post the video of the pull and dyno results.
This GEN III totally changed my mind about only buying a GEN IV if the choice is between GEN III and GEN IV. To make that kind of easy power in a very steetable package impressed the hell out of me.
Regarding the ACRX headers being different, yes they are since they've become the ACRX brand. Per Dodge's request, the O2 **** was moved to a specific location in the collector (was not like this in previous American Racing Headers units). This is one of the reasons I bought the ACRX units over the other units on the market....much less chance for a check engine light with the stock controller. Over 1400 miles on my GEN IV with no check engine light.
It appears the SRT boys have this stuff figured out
Maybe some of the ACRX race car owners can chime in and tell us if they've had any problems with the uncoated stainless steel headers....might be good info regardless of which brand you might choose.
Cheers,
George