This always intrigues me. Why not replace the Spintech muffler with a $110 Magnaflow. Then, you get all the power, all the time, without flipping s switch, plus it's quiet.

 

Do you use the 12909 muffler or the race muffler?

(the add in the link was race muffler and you posted/wrote 12909 muffler here)

I'm thinking of getting a 12909 but I'm worried that it should be a restriction and on the other hand I think a race muffler 14151 would be to loud for the steet......

/N.

 

I use the 12909. Not sure how I posted the wrong link, but here it is again:

http://www.magnaflow.com/02product/s...e=main&id=1070

Unless you're making over 1000 hp, I highly doubt the 12909 is a restriction. I pulled mine off and it makes no difference at all.

Mike

 

How does it sound at idle and at WOT?

any soundclips/movies?

/N.

 

I don't have any soundclips, but I can say that it's much quieter than the old 3.5" Aerochamber that I had.

 

The QTP was $154.00 for a single 3 1/3" unit. It takes about 3 to 4 seconds to open. Also, noise can be limited by opening partially. You must use care when opening and closing preventing current overload the QTP electric motor. The switch is a momentary, so, short on-off signals seam to be the best for me, and, listening to the exhaust note. Also, with the engine off, you can hear the electric motor load up when @ full closed or open position. This is one feature QTP and others don't tell you, but, now I see QTP has something else for better control (of course, more money). I just tried this to see how it would work, and, it looks to work the best for me. My next move was to use a 4" cc insert into a 4" pipe and fabricate my own muffler. I got alot of time this Winter.

 

Ordered the 12909 from summit.

Do you think my 3.2" interm. pipe will be enough or should I step up to 3.5" all the way?

 

Just recently revised my exhaust system per Engineermike's recommendation. I now have Hooker LTs, Mufflex 3" Y pipe into Mufflex 3.5" catback but using a Magnaflow 12909 muffler. I really like this setup. Sounds good IMO and not too loud. Thanks to Engineermike for the suggestion

 

No problem! I gaurantee that's about as good as it gets for an exhaust system!

 

Can anyone post a sound clip of the 3.5inch mufflex set up with the magnaflow muffler?

 

Do you have any videos of your car? I'm interested in how it sounds.