[Shotimes] Walker cat-back smaller than expected.

[Michael]

 Justin, I've heard too about the raspy sound without a resonator. And for sure, I want my SHO to sound good. Does Walker make a 2.5" resonator?Michael94MTX,green,BOS+--- On Mon 01/12, Carl Prochilo < gr8sho@prochilo.myserver.org > wrote:From: Carl Prochilo [mailto: gr8sho@prochilo.myserver.org]To: molsen@excite.comCc: shotimes@autox.team.netDate: Mon, 12 Jan 2004 16:57:45 -0500 (Eastern Standard Time)Subject: Re: [Shotimes] Walker cat-back smaller than expected.Mike,I replaced the resonator on my Walker with a 2.5" straight pipe, so that'scertainly an option.I know at least one person that had work done to go to a 3" single pipesystem all the way back off a HiFlow Y-pipe. You can hear it blocks away. The single pipe was primarily a weight consideration more than anythingelse, plus the car is used only off-road.-- Cheers,Carl Prochilo1992 Ultra Red CrimsonMichael said:> Hi, I just realized, after having used it for 4y now, that the> Walker/Dynomax cat-back is actually only a 2.25" system, and not a 2.5"> system as I had thought all along. Also, the output pipe of the HiFlow cat> is only 2.25". According to some flowdata that I saw, a 2.25" single-pipe> system will definately restrict the flow of even a slightly modified SHO.> Not by a lot, but it's not optimal.This latest "revelation" makes me wanna> try to make a custom 2.5" exhaust system as follows: 1. move the rear cat> 6" further back to optimize its position. (Apparantly, 12-18" from the> exhaust manifold opening is optimal for a 2.25" cat.)2. replace the two> rear cat pipes with 2.5" pipes.3. make a more tapered merging of the two> rear cat pipes.4. drop the resonator.Have any of you done something> similar? Any comments appreciated. I expect to gain about 5HP from this. I> like the single-pipe configuration, and don't wanna go to dual-pipes.> Dual-pipes is too much work, and the consensus, I be!> lieve, is that I would loose too much back pressure and thus torque at> low-RPM. Michael94MTX,green,BOS+>> _______________________________________________> Join Excite! - http://www.excite.com> The most personalized portal on the Web!> _______________________________________________> Shotimes mailing list> Shotimes@autox.team.net> http://www.team.net/mailman/listinfo/shotimes>

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