X- pipe exhaust

Jeff Stout · 10-05-2012, 11:40 AM

Had bullets about mid car. Went to full exhuast out the back with x-pipe in proper location. Gained 45 lbs weight and picked up .04 et. sbc

Ed Wright · 10-05-2012, 02:14 PM

Jeff, how can you be sure about four hundredths, week-to-week. Surely you didn't back-to-back that system at the track, same day?

7423 · 10-05-2012, 09:40 PM

Quote:

Originally Posted by Ed Wright

Jeff, how can you be sure about four hundredths, week-to-week. Surely you didn't back-to-back that system at the track, same day?

I have 3" collectors into a 3" X pipe and into a pair of dual chamber Flowmaster mufflers with turn downs. X pipe and mufflers weigh 44lbs.
Remove the system and run open headers with a collector extension, add 40lbs of lead and the car runs .10 slower et and 1.5 mph slower.
That was a back to back test, within 45 minutes. I have done this several times.
X pipe and mufflers, would not leave home without them.

sportsfan · 10-05-2012, 10:43 PM

OK, I'm sold on the benefits of the X pipe.Should I use my bullet mufflers or just turn downs? Or test both combos?

10-05-2012, 11:40 AM	#1
Jeff Stout VIP Member Join Date: Dec 2001 Location: phoenix Posts: 1,489 Likes: 66 Liked 706 Times in 283 Posts	Re: X- pipe exhaust Had bullets about mid car. Went to full exhuast out the back with x-pipe in proper location. Gained 45 lbs weight and picked up .04 et. sbc

10-05-2012, 02:14 PM	#2
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: X- pipe exhaust Jeff, how can you be sure about four hundredths, week-to-week. Surely you didn't back-to-back that system at the track, same day? __________________ Ed Wright 4156 SS/JA

10-05-2012, 10:43 PM	#4
sportsfan Junior Member Join Date: Aug 2004 Location: Somerville,New Jersey Posts: 34 Likes: 0 Liked 0 Times in 0 Posts	Re: X- pipe exhaust OK, I'm sold on the benefits of the X pipe.Should I use my bullet mufflers or just turn downs? Or test both combos?