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Old 11-09-2015, 07:35 AM   #1
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New H-Pipe Performance

Hey guys, so after installing the new H-Pipe I noticed that the performance is crappy. The tune will arrive tomorrow so I will upload it ASAP. I was told I would lose performance but wow it was pretty noticeable. I floored it once and then stopped I didnt like how it acted. It was a different feel.
The tune will take off the CEL and fix the performance issue. Did you guys see any gain of power with a lethal performance o/r h after the tune?
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Old 11-09-2015, 08:32 AM   #2
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That's strange and I would like clarification on this as well.

You really shouldn't even see a gain or a loss from what I've read due to it being an H-Pipe, hopefully the tune is the answer. I know you are suppose to get it tuned since the vehicle will start to run lean or rich due to the absence of the Cats.
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Old 11-09-2015, 08:35 AM   #3
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That's strange and I would like clarification on this as well.

You really shouldn't even see a gain or a loss from what I've read due to it being an H-Pipe, hopefully the tune is the answer. I know you are suppose to get it tuned since the vehicle will start to run lean or rich due to the absence of the Cats.
Idk. Maybe it was just me. It felt weird once and then i decided to not floor it just in case. I wanna do it again but il wait until tomorrow after the tune.
I was told that I could see a horsepower decrease due to something with the 02 sensors and a few other things. Got too technical for me so I dont remember to be honest. Not that educated on everything just yet lol still learning!
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Old 11-09-2015, 08:37 AM   #4
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Yea man I'd wait for the tune before ruling out the "loss" of performance.

Maybe get some Royal Purple Fuel Cleaner or Lucas Fuel Cleaner. Not sure just trying to help you out. Keep us posted.
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Old 11-09-2015, 08:51 AM   #5
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Tune is everything. With Cats out your car is reading and adjusting the fuel all screwy. Once tune in you will be thrilled. should be anyway
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Old 11-09-2015, 10:13 AM   #6
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Yeah, removing the cats and not tuning for is is causing your car to jack your fueling all up. i highly recommend staying off the throttle hard until you have the tune loaded.
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Old 11-09-2015, 02:40 PM   #7
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Tune is everything. With Cats out your car is reading and adjusting the fuel all screwy. Once tune in you will be thrilled. should be anyway
Already am thrilled lol. Sounds amazing. LOUD. But good.
Cant wait till tomorrow to get the tune

One more question, do you guys think it will make a difference in teh sound once tuned?
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Old 11-09-2015, 02:41 PM   #8
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Yeah, removing the cats and not tuning for is is causing your car to jack your fueling all up. i highly recommend staying off the throttle hard until you have the tune loaded.
I am. Im keeping my shifting down at about 2-2.5rpm and 3 at the most. Too scared to have a heavy foot until i get my tune
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Old 11-09-2015, 02:42 PM   #9
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I am. Im keeping my shifting down at about 2-2.5rpm and 3 at the most. Too scared to have a heavy foot until i get my tune
I would dump the clutch at 6k RPM and hope I can make a loud backfire in front of a cop.
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Old 11-10-2015, 10:08 AM   #10
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It has to do with the tune, O2 sensors and loss of cats.
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Old 11-10-2015, 12:45 PM   #11
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So the tune is on and it runs awesome. I love the sound. Only thing is as soon as I hit 3k rpm it SCREAMS and then levels itself out. It also kinda sounds like a rattle I think. Don't wanna say like a fart can but it's kinda high and loud. After the 3 rpm or 3.5 rpm it levels out and sounds amazing. Any ideas what that could be? It's happened on 2 and 3rd maybe 1st and 4th not sure
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Old 11-10-2015, 12:57 PM   #12
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Just the nature of the Sixxer motor man - unfortunately without having to spend alot more money theres really nothing you can do.

Look up "J-Pipe" or "helmholtz resonator" - this usually will fix "bees in a can" sound and the drone.....USUALLY.

But i am glad to see its working out for you.
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Old 11-10-2015, 01:02 PM   #13
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Just the nature of the Sixxer motor man - unfortunately without having to spend alot more money theres really nothing you can do.

Look up "J-Pipe" or "helmholtz resonator" - this usually will fix "bees in a can" sound and the drone.....USUALLY.

But i am glad to see its working out for you.
Cool brotha thank you. That's ok il leave it as is. It's really only at 3k RPM other than that it sounds amazing especially at lower rpms. And once past that 3 it's got a good tone as well
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Old 11-10-2015, 01:05 PM   #14
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Old 11-10-2015, 03:20 PM   #15
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Thanks for all your help you guys. You guys are the best!
Appreciate every input
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Old 11-10-2015, 03:30 PM   #16
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You're welcome.
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