When I first got my car getting a decent average loudness type of exhaust was first on my list. I bought the Steeda, it was pretty good and it laid down 419.0 rwhp w/no pullies. When I did my solid axle swap I bought a new stinger system off ebay. At first I thought the loudness was awesome, I coulndn't get enough. Then one day I took a long cruise and the noise was getting to me. Call me a skirt for not wanting the noise!!. The stingers had to go. Before I got rid of the stingers I dynoed 423 rwhp. this may sound nuts but I cut out the stinger muffler sections and welded in Napa quiet flows from a direct replacement 96 cobra. It still sounds awesome with rumble, just the tones are less loud. I brought it back to the dyno and amazed that it did 421rwhp and torque was the same on all runs previously. So I don't think that the catback of brand is a big factor.
I just installed a 2.8 and the results were 448rwhp and 476 tq. I emailed cobrabob because I thought it might be low on hp's but he think's it's average and looking at all the sigs every one ranges from 450 to 470 rwhp. I dynoed on a humid day in the eighties so maybe there's a few missing hp #'s there.
I just installed a 2.8 and the results were 448rwhp and 476 tq. I emailed cobrabob because I thought it might be low on hp's but he think's it's average and looking at all the sigs every one ranges from 450 to 470 rwhp. I dynoed on a humid day in the eighties so maybe there's a few missing hp #'s there.
