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#11 |
![]() Join Date: Feb 2010
Location: Arvada Colorado
Posts: 194
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FU
Ive got 2- new Dynomax 17519 muffs that I would unload fairly cheap, say $125 for both, shipped. I went with the 17228 instead and just have these sitting around. The are not as loud as the 17228 I am told. I have not heard them on a ZR-1 but was told by Dynomax tech support that they do tone down the resonance more so than the 17228. Where the 17228 spits in a Y configuration the 17519 splits in a T inside the muffler. This cancels the the resonance with the direction change but it is still considered full flow although i bet a bit less than the 17228. The external dimensions are the same size also. Pics below of the internals
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[I]4-cam[/I] [I]1991 ZR-1 Blk/Gry #31[/I] [I]SW Headers/Xpipe- Dynomax Muffs[/I] [I]Ported top end[/I] [I]Secondaries Removed[/I] Tune by Dominic Last edited by 4-cam; 04-27-2014 at 12:27 AM. Reason: spelling |
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#12 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,697
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Just for clarification sake, anyone using cutouts. Would you ever drive around w them open or are they just for "performance outings"?
If you're looking for a quiet system, I would recommend the MagnaFlow cat back. Just don't expect it to flow enough for anything above 400rwhp. I'll be glad to demo my Z06 system at BG for anyone interested. However, it is not "whisper quiet". You'll know you're not in a Cadillac.
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX Last edited by XfireZ51; 04-27-2014 at 12:52 AM. |
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#13 | |
![]() Join Date: Apr 2007
Location: Lake Bluff, IL
Posts: 2,067
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2016 Long Beach Red Z06 #10281 "POPS Z" 1995 Polo Green #409 "WARP TEN"--Haibeck 350/510 package, 4.10s, Hurst, Stock Exhaust with QTP Cutouts --Sold but still running strong 1993 Quasar Blue #161 "HIL KING" --Sold but still running strong, now with more than 120,000 miles 1967 Marlboro Maroon/Saddle Corvette Coupe 300 hp/4-spd --Sold a long time ago ZR-1 Net Registry Founding Member #95 NCM Lifetime Member Favorite Quote--Attributed to Mickey Thompson: "Too Much Horsepower is Almost Enough" |
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#14 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,697
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Do the cutouts create an issue for the O2 sensor? Particularly on decel? Or do you run Open Loop?
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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