Boost and power lost on Straightpiped Z help - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

mikystyle · 08-06-2016, 04:19 PM

I have had my '13 Zl1 Straightpiped with just catless mids and the fuse pulled for about a year now and didn't really notice at first but the other day I put my fuse back into my NPP exhaust and "hello welcome back"! Forgot about the neck snap and supercharger whine. Any ideas on how I can get the rest of it back and more? I was thinking of messing with pullys a bit to get some boost back and do some light tuning. I don't want to go ape with the tuning as I still have 2yrs warranty left. And I know LTs are what everyone is thinking and I am too but right now with my warranty if I have to bring the car into the dealer the catless mids come off in about 10min

ZO6 Bryan · 08-06-2016, 05:00 PM

Putting that fuse back will have nothing to do with boost level or bringing back power.

mikystyle · 08-06-2016, 05:05 PM

Back pressure??

ZO6 Bryan · 08-06-2016, 07:14 PM

Nope. Negligible back pressure at part throttle which is the only time the flaps are closed.

Can'tHave2MuchHP · 08-06-2016, 10:02 PM

LOL What fuse did you pull??? :P :P

In all seriousness....placebo effect

hawk02 · 08-06-2016, 10:27 PM

My car also seems to loose a little low end "snap" when I set the flaps to open with my Dashlogic unit. If it's a placebo effect, then I'm also experiencing it.

Can'tHave2MuchHP · 08-06-2016, 10:56 PM

Going fast + without loud = Feels faster, at least for me. For example, my new Cadillac CTS feels really fast for what it is (2.0T) but there's a big difference between it and my ZL1 or other performance cars that I have/drive,
If there was a difference, I really really doubt that you could tell the difference by the unreliable and easily variable seat-of-the-pants-o-meter.

mikystyle · 08-07-2016, 08:26 AM

Quote:

Originally Posted by ZO6 Bryan

Nope. Negligible back pressure at part throttle which is the only time the flaps are closed.

So flaps are open at idle and then close under part throttle and open up again at around 3k?
As far as over drive pullys go though, I'd assume that would help open my sc up a little more.

ZO6 Bryan · 08-07-2016, 10:27 AM

Quote:

Originally Posted by mikystyle

So flaps are open at idle and then close under part throttle and open up again at around 3k?
As far as under drive pullys go though, I'd assume that would help open my sc up a little more.

Actually they open at about 2 lb of boost regardless of RPM. It's the Vettes that hold them closed until 3000 RPM.

mikystyle · 08-07-2016, 12:32 PM

Quote:

Originally Posted by ZO6 Bryan

Actually they open at about 2 lb of boost regardless of RPM. It's the Vettes that hold them closed until 3000 RPM.

Ya that makes more sense thanks for the info

08-06-2016, 04:19 PM	#1
mikystyle Check your Pants Drives: 2013 ZL1 "Beast" Join Date: Jun 2013 Location: Granite State Posts: 59	Boost and power lost on Straightpiped Z help I have had my '13 Zl1 Straightpiped with just catless mids and the fuse pulled for about a year now and didn't really notice at first but the other day I put my fuse back into my NPP exhaust and "hello welcome back"! Forgot about the neck snap and supercharger whine. Any ideas on how I can get the rest of it back and more? I was thinking of messing with pullys a bit to get some boost back and do some light tuning. I don't want to go ape with the tuning as I still have 2yrs warranty left. And I know LTs are what everyone is thinking and I am too but right now with my warranty if I have to bring the car into the dealer the catless mids come off in about 10min __________________ '13 ZL1 Root-fab JBA Catless Mids Last edited by mikystyle; 08-08-2016 at 06:34 AM.

08-06-2016, 05:00 PM	#2
ZO6 Bryan Drives: 02 Z06, 95 Trans Am, 2012 ZL1 Join Date: Mar 2012 Location: Southeast Posts: 1,838 View My Garage	Putting that fuse back will have nothing to do with boost level or bringing back power. __________________ Bryan 2018 ZL1 M6

08-06-2016, 05:05 PM	#3
mikystyle Check your Pants Drives: 2013 ZL1 "Beast" Join Date: Jun 2013 Location: Granite State Posts: 59	Back pressure?? __________________ '13 ZL1 Root-fab JBA Catless Mids

08-06-2016, 07:14 PM	#4
ZO6 Bryan Drives: 02 Z06, 95 Trans Am, 2012 ZL1 Join Date: Mar 2012 Location: Southeast Posts: 1,838 View My Garage	Nope. Negligible back pressure at part throttle which is the only time the flaps are closed. __________________ Bryan 2018 ZL1 M6

08-06-2016, 10:27 PM	#6
hawk02 Coupe Newbie Drives: 2017 ZL1, 2021 Corvette Convertible Join Date: Jul 2011 Location: Columbus, Ohio Posts: 3,283 View My Garage	My car also seems to loose a little low end "snap" when I set the flaps to open with my Dashlogic unit. If it's a placebo effect, then I'm also experiencing it. __________________

08-06-2016, 10:02 PM	#5
Can'tHave2MuchHP Drives: Fast Join Date: Mar 2015 Location: Michigan Posts: 3,696	LOL What fuse did you pull??? :P :P In all seriousness....placebo effect

08-06-2016, 10:56 PM	#7
Can'tHave2MuchHP Drives: Fast Join Date: Mar 2015 Location: Michigan Posts: 3,696	Going fast + without loud = Feels faster, at least for me. For example, my new Cadillac CTS feels really fast for what it is (2.0T) but there's a big difference between it and my ZL1 or other performance cars that I have/drive, If there was a difference, I really really doubt that you could tell the difference by the unreliable and easily variable seat-of-the-pants-o-meter.