98TAauto

iTrader: (2)

i never got to run on the dyno but what has everyone seen dyno wise from running with the cutout closed and then with it open??

i know cams love open exhaust <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

BIGBOS

Suprisingly I made more power with the cutout closed..

That was with my MTI S2 heads w/the X1 cam..

Weird huh? <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

98TAauto

iTrader: (2)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by BIGBOS:
<strong> Suprisingly I made more power with the cutout closed..

That was with my MTI S2 heads w/the X1 cam..

Weird huh? <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">damn you do have a freak car <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" alt="[chug]" title="" src="graemlins/gr_chug.gif" />

LOnSLO

iTrader: (15)

I gained a whopping 3rwhp with the cutout open, with stock heads and SLP long tubes, and SLP dual/dual.

jmX

I had heads/cam with B&B triflo exhaust, flp headers, no cats.

405rwhp cutout closed
415rwhp cutout open

BIGBOS

Yea, the SLP dual-dual is really a bad *** catback... <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

JimMueller

iTrader: (9)

Cutout gains me 24rwhp & 19rwtq...but I have the stock cat-back <img border="0" alt="[bang head]" title="" src="graemlins/gr_banghead.gif" />

AINT SKEERED

iTrader: (2)

I gained 18 hp and 11 lbs tq over my Edelbrock catback . some may have been from computer learn as I only made 1 through muffler and 1 through cutout at Thunder raceing dyno day.

Speeds8erM-1

iTrader: (28)

I picked up 19 rwhp with mine over my Flowmaster Catback on my 94 Z28 with my old setup, Ported Heads and LT4 Hotcam. It was just a lowly LT1 too. <img border="0" title="" alt="[Razz]" src="gr_images/icons/tongue.gif" />

soslo

iTrader: (12)

I picked up 12HP/9TQ (at HP Peak...more past that)... <img src="http://netlinkapplications.com/aaron/images/dyno2lg.jpg" alt=" - " />

Krazy98Z28

iTrader: (12)

I gained 25 RWHP over the stock exhaust this was with my old H/C set up

LQ4somona

I don't know about horsepower, but on the quarter my C3 picked up 4 tenths and 1.8 mph by opening up the exhaust. It went from running a 15.4 to a 15.0 with no other changes. But it is completely stock. So I gained a bit

98TAauto

iTrader: (2)

jeez.. some of ya'll are pickin up serious numbers!! Thanks

kent

98TAauto--go ahead and break down and get that cutout. It is one of the cheapest <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> mod you can do and more than likely you will run the quarter faster. <img border="0" alt="[driving]" title="" src="graemlins/gr_driving3.gif" /> It is good as the 3600 vig and Nitto tires. Cheers and good luck--I had to chime in. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

98TAauto

iTrader: (2)

Kent, the cutout was the first mod I did 3 years ago <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> I just wanted to know how much gain guys saw from capping and un capping it on the dyno. I know the car feels 4times stronger uncapped from a roll <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

Chad00ws6

I can beat all claims so far. I have a motor that really likes to breathe.

I picked up 32rwhp and 42rwtq with dual cutouts opened in the y-pipe just behind the headers. <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

I have the stock 3" catback that is on the WS6 and an obviously crappy FLOWMASTER <img border="0" alt="[barf]" title="" src="graemlins/gr_barf.gif" /> (slowmaster) muffler.

My sentiments when I saw that were OH **** <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />