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1. [Shotimes] new y-pipe purchase (score: 1): Author: "Joe Masters" <miethos@gmail.com>; Date: Mon, 21 Aug 2006 16:16:32 -0500; Hey guys, i'm about ready to purchase a new high flow y-pipe with no cats i think this time. So i was looking through all of the various SHO sites I have and it looks like nobody is offering one exce; /html/shotimes/2006-08/msg00372.html (8,366 bytes)
2. Re: [Shotimes] new y-pipe purchase (score: 1): Author: "van Oss" <vanOss@centurytel.net>; Date: Mon, 21 Aug 2006 17:18:12 -0500; I tried a catless Y-pipe on Abigail and took it back off as soon as I could. Unless you are running a blower track car, a catless Y-pipe is a bad idea on a SHO. 1) SHOs need the backpressure to make; /html/shotimes/2006-08/msg00376.html (9,277 bytes)
3. Re: [Shotimes] new y-pipe purchase (score: 1): Author: Ian Fisher <dataflash@yahoo.com>; Date: Mon, 21 Aug 2006 15:29:23 -0700 (PDT); 1. Unless you are going to go through the hassle of tuning it correctly, you will lose torque with the catless pipe. It's not worth it. It's also illegal. 2. The last time I checked, Bittersweet's pi; /html/shotimes/2006-08/msg00378.html (9,508 bytes)
4. Re: [Shotimes] new y-pipe purchase (score: 1): Author: "D. Mallinson" <dmall@mwonline.net>; Date: Mon, 21 Aug 2006 17:32:35 -0500; on my car, the loss of the cats didn't make any real difference either way. With the new cams, the car lost torque both ways. But it did gain more HP when we put the catless y-pipe on. On a stock en; /html/shotimes/2006-08/msg00380.html (10,463 bytes)
5. Re: [Shotimes] new y-pipe purchase (score: 1): Author: Mark Nunnally <marknunnally@alltel.net>; Date: Mon, 21 Aug 2006 21:01:29 -0400; Ironically, none of the (at least the old SS unit and PP/FPS unit) are legal either, even with cats since none were EPA/CARB approved. So while it may pass the visual inspection, technically, it's s; /html/shotimes/2006-08/msg00382.html (9,081 bytes)
6. Re: [Shotimes] new y-pipe purchase (score: 1): Author: Rich Bruso <shoguy_89@cox.net>; Date: Tue, 22 Aug 2006 14:39:50 -0400; It looks like the backorder time on the 23355 is about a month. Mine was ordered in early August and, though it bounces around daily, the "expected" date is the 7th of September. No real problem for; /html/shotimes/2006-08/msg00391.html (10,871 bytes)
7. Re: [Shotimes] new y-pipe purchase (score: 1): Author: Kenneth Epperly <epperly1@optonline.net>; Date: Tue, 22 Aug 2006 15:53:15 -0400; Yes that is true, but neither the state or private inspection ever questioned me on it. Ken _______________________________________________ Shotimes mailing list Shotimes@autox.team.net http://www.te; /html/shotimes/2006-08/msg00392.html (9,327 bytes)
8. Re: [Shotimes] new y-pipe purchase (score: 1): Author: G Kerby Haltom <g.kerby@sbcglobal.net>; Date: Tue, 22 Aug 2006 13:17:35 -0700 (PDT); And CARB approval doesn't count in most of the US... Kerby Kenneth Epperly <epperly1@optonline.net> wrote: Yes that is true, but neither the state or private inspection ever questioned me on it. Ken; /html/shotimes/2006-08/msg00393.html (9,660 bytes)
9. Re: [Shotimes] new y-pipe purchase (score: 1): Author: "Adam Parrott" <parrotta@usa.net>; Date: Tue, 22 Aug 2006 21:02:33 -0500; While we're at it, I figured I would also add that: a) SHOs (like most gasoline engines) do NOT require backpressure to make power. b) any "loss" that is experienced or measured from the use of a cat; /html/shotimes/2006-08/msg00394.html (10,201 bytes)
10. Re: [Shotimes] new y-pipe purchase (score: 1): Author: "van Oss" <vanOss@centurytel.net>; Date: Tue, 22 Aug 2006 21:15:59 -0500; Thank you Mr. Parrott. It's been known for 1.5 decades that SHO engines (normally aspirated, at least) need some backpressure to make their full torque potential. If needed we can go back to the lite; /html/shotimes/2006-08/msg00395.html (9,173 bytes)
11. Re: [Shotimes] new y-pipe purchase (score: 1): Author: Jon Heese <shotimes@jonheese.com>; Date: Tue, 22 Aug 2006 23:01:48 -0400; Hmmm... Sounds to me like you two may not be in disagreement. Adam says that SHO engines do not require backpressure to make power. He doesn't actually say that removing the cats (and thus the backpr; /html/shotimes/2006-08/msg00396.html (10,436 bytes)
12. Re: [Shotimes] new y-pipe purchase (score: 1): Author: Ron Childs <rbchilds@pacbell.net>; Date: Tue, 22 Aug 2006 21:52:00 -0700 (PDT); I believe that catless exhaust without backpressure will indeed cost low end torque. The method, I think, is that fuel/air mixture will blow out the exhaust valve during the valve overlap period. Tun; /html/shotimes/2006-08/msg00397.html (11,244 bytes)
13. Re: [Shotimes] new y-pipe purchase (score: 1): Author: "Adam Parrott" <parrotta@usa.net>; Date: Wed, 23 Aug 2006 00:00:00 -0500; While Jon almost hit the nail on the head, I feel I should step in and add a bit of clarity to my original statement before things start to get out of control. When I said that SHO engines do NOT req; /html/shotimes/2006-08/msg00398.html (11,514 bytes)
14. RE: [Shotimes] new y-pipe purchase (score: 1): Author: "Ron Porter" <ronporter@ameritech.net>; Date: Wed, 23 Aug 2006 01:11:54 -0400; Everyone needs to keep in mind that the term "backpressure" is a misnomer. I get the impression that when folks think of "backpressure", they envision a potato in the exhaust pipe.....or something al; /html/shotimes/2006-08/msg00399.html (10,607 bytes)
15. Re: [Shotimes] new y-pipe purchase (score: 1): Author: "Rick Glass" <cmysho@comcast.net>; Date: Wed, 23 Aug 2006 01:03:58 -0500; Um, not true...... I did true dual 2" pipes all the way back (to what resembled mufflers with a pipe straight through them) on my '94 and it had NO TORQUE, was the worst running SHO I have ever had t; /html/shotimes/2006-08/msg00400.html (11,439 bytes)
16. Re: [Shotimes] new y-pipe purchase (score: 1): Author: "Adam Parrott" <parrotta@usa.net>; Date: Tue, 29 Aug 2006 00:35:33 -0500; Coming in late after a busy weekend to close out this thread ... probably always show a peak HP increase on a dyno, but it will be at the expense of killing the torque below that point. And you can't; /html/shotimes/2006-08/msg00438.html (10,226 bytes)
17. Re: [Shotimes] new y-pipe purchase (score: 1): Author: "Rick Glass" <cmysho@comcast.net>; Date: Tue, 29 Aug 2006 01:20:07 -0500; "Out of curiosity, how were the pipes configured (e.g. where and how many bends, did you utilize a crossover pipe, etc.)? " Factory cats were gutted and welded back in factory pipe, the end of teh Y; /html/shotimes/2006-08/msg00439.html (12,034 bytes)

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