wookie_666 Member 70 Member For: 15y 6m 25d Posted 23/08/09 08:29 AM Share Posted 23/08/09 08:29 AM Ok guys, heres the problem.My xr6 NA runs on gas and petrol. I have just had the xr6t cat back exhaust with a brand new x-force hi-flow cat installed on my car and I am not happy with the result. The car feels like it has lost power, more than normal running on gas.Also around the 2.5 to 3K revs mark, the exhaust is raspy. It actually sounds like a 4 banger. What are my options with 1. Gaining back pressure without removing the 'T exhaust2. Removing the raspy note.My thoughts are (removing centre muff) or (replacing rear muff with bigger/smaller(help me out here)) or installing resonator/s.Now for you guys with NA, who have done this mod, what are your thoughts. How's it sound and what would/have you done differently. Thanks in advance. Link to comment Share on other sites More sharing options...
jasol Member 571 Member For: 15y 10m 1d Location: adelaide Posted 23/08/09 08:33 AM Share Posted 23/08/09 08:33 AM IMO the exhaust is too big hence the power loss and the crap sound, a simple 2.5" mandrel system single system would be the go Link to comment Share on other sites More sharing options...
wookie_666 Member 70 Member For: 15y 6m 25d Posted 23/08/09 08:55 AM Author Share Posted 23/08/09 08:55 AM yeah. so if I just get a 2.5 inch system from the cat back installed it would sound better.Im really looking at leaving the xr6t system on but is there a way I can increase backpressure. Like smaller/bigger mufflers. Or resonators. Please help Link to comment Share on other sites More sharing options...
mntxr Member 45 Member For: 15y 8m 22d Gender: Male Location: melbourne Posted 23/08/09 09:25 AM Share Posted 23/08/09 09:25 AM I have a bf cobra twin system and mine has heaps of punch since I put it on so I am a bit confuzed how you have power loss Link to comment Share on other sites More sharing options...
jasol Member 571 Member For: 15y 10m 1d Location: adelaide Posted 23/08/09 09:26 AM Share Posted 23/08/09 09:26 AM yes a decent single 2.5 will sound far better, I think in the long run ull be better off getting the single like this http://cgi.ebay.com.au/FORD-BA-BF-FALCON-X...alenotsupportedyou could fit it urself then sell the xr6t system for $120-150 if you start buying and fitting other mufflers etc trying to get it better your easy going to be more out of pocket Link to comment Share on other sites More sharing options...
wookie_666 Member 70 Member For: 15y 6m 25d Posted 23/08/09 09:42 AM Author Share Posted 23/08/09 09:42 AM mntxr, I think the reason for the loss in power is because of the gas. And jasol, thanks heaps, but I will have to leave it for a while and then try to sell the system later. Atm, I cannot fit it myself as I have a y piece fitted just after the cat for the 'T system. So I will have to talk to my exhaust guy and see what he says. I might just have to leave it till I can save and upgrade properly. Thanks. Link to comment Share on other sites More sharing options...
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