Gains from O/R h or X pipe
9/2/14, 05:57 PM
#1
Mach 1 Member
Thread Starter
Gains from O/R h or X pipe
Looking to see if anyone on here has upgraded to an O/R catless H pipe that is FI. I know they state 15-18 HP in NA form, but I am curious what gains I would see with my VMP stage 2 running 82mm at 10 lbs. Current exhaust is stock and I know I will loose a little boost with the exhaust opened up, but I hope to make up for that with more HP.
9/5/14, 08:09 PM
#2
V6 Member
I have a OR H Pipe No Cats, CAI, MT82, 3.73, Flowmaster Outlaws AB, Tune, MGW Shifter, I ran a 12.50 @ 112.67 mph on 275/50/18 Street Tires recently at Orlando Speed World Dragstrip!
9/6/14, 08:39 AM
#3
Mach 1 Member
Thread Starter
My local track is an 1/8th and my best was 7.1 at 99mph. This is with my 20's on invo's, but I want to get into the 6's over 100mph before I buy DR's. I hope the O/R pipe will get me under 7's.
9/11/14, 01:23 PM
#4
Looking to see if anyone on here has upgraded to an O/R catless H pipe that is FI. I know they state 15-18 HP in NA form, but I am curious what gains I would see with my VMP stage 2 running 82mm at 10 lbs. Current exhaust is stock and I know I will loose a little boost with the exhaust opened up, but I hope to make up for that with more HP.
To 3" O/R x-pipe N/A
Back to stock exhaust N/A
Now x-pipe with cats and a vortech
When I had to drive a week with the stock exhaust back on it was pretty noticeable. I had to leave cats on because dealer fixed a header leak and the bolts were too tight for me to remove the one from up top. Long story short, definitely get another exhaust, but the cats do keep you from stinking up your clothes at a red light with the windows down and they quiet it down quite a bit. Would like to take cats off with FI now just to see what the difference would be.
9/11/14, 01:41 PM
#5
Legacy TMS Member
I went from stock exhaust N/A To 3" O/R x-pipe N/A Back to stock exhaust N/A Now x-pipe with cats and a vortech When I had to drive a week with the stock exhaust back on it was pretty noticeable. I had to leave cats on because dealer fixed a header leak and the bolts were too tight for me to remove the one from up top. Long story short, definitely get another exhaust, but the cats do keep you from stinking up your clothes at a red light with the windows down and they quiet it down quite a bit. Would like to take cats off with FI now just to see what the difference would be.
9/11/14, 01:43 PM
#6
I only had the gas smell with out cats, nothing now that they are back on. My exhaust ends at the rear axle so that has a little to do with it.
9/11/14, 01:47 PM
#7
9/11/14, 01:49 PM
#8
Legacy TMS Member
Yes the sulfur smell. And I've read it's pretty common with new cars, not necessarily bad gas. I use Shell, 76 or Chevron. Smells the same. Only when pushing it hard. We only have 91 here too...
9/11/14, 01:53 PM
#9
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