|
Joined: Jan 2001
Posts: 3,421
Moderator
|
OP
Moderator
Joined: Jan 2001
Posts: 3,421 |
OK guys i know you will say do a search but no one really talks or asks about how much droon/rasp there will be. I want to get the y-pipe as my next mod for summer but im concernd about how loud it will be. When i 1st did my exhaust work a had a Dynomax bullet in place or res and a highflow muffler out back. well this thing would droon like crazy, wasnt happy at all. so i went and bought a Dynomax Ultraflow and put that in its place much better now. if i was to put the Y-pipe on my setup now will i get a lot of droon/rasp. i dont mind it being louder outside the car but i dont want it loud inside. any help with this would be great.
|
|
|
|
Joined: Jun 2000
Posts: 3,562
Member
|
Member
Joined: Jun 2000
Posts: 3,562 |
You should be fine with a high flow cat style Y-pipe, go catless and you will pick up some extra drone/rasp.
Brad Noon '99 SE MTX 3 point oh my God H.O. 179HP/178TQ BNMotorsports Floormats, powder coating, TB optimizing, Gutted cats, etc BNMotorsports is now the preferred distributor of Contour/SVT/Mystique Indiglo style gauges!!!bnmotorsports@msn.com
|
|
|
|
Joined: Jan 2001
Posts: 3,421
Moderator
|
OP
Moderator
Joined: Jan 2001
Posts: 3,421 |
Cool now question 2 what kind of gains am i loseing by haveing the cat on there. i know catless is 7-8, what about with a cat
|
|
|
|
Joined: Sep 2000
Posts: 407
Member
|
Member
Joined: Sep 2000
Posts: 407 |
I've got the SHO-Y without the main cat and don't have any bad drone or rasp at all. Maybe a wee bit when it was first installed, but once the inside of the pipes coated themselves with carbon it was aok. It will make your exhaust a bit louder (although wife never noticed), but it's better sounding to me. BTW, I've still got the stock res in there, but will be putting in a high flow one soon. Hope that helps.
Black 98.5 SVT w/ KKM intake, 73mm MAF, ASP pulley, Optimized stock Y-Pipe, 24mm hollow rear sway bar, Magnaflow resonator, Magnaflow mufflers, Roush springs, KYB struts
|
|
|
|
Joined: Jun 2000
Posts: 3,562
Member
|
Member
Joined: Jun 2000
Posts: 3,562 |
Originally posted by LBVSVT: BTW, I've still got the stock res in there... Hence the reason you don't have much drone. I-DOM-IN-8 has a modified exhaust and will notice it more than someone with the stock cat back still in place. Without the main cat should be within 5 or so HP of the high flow cat pipe.
Brad Noon '99 SE MTX 3 point oh my God H.O. 179HP/178TQ BNMotorsports Floormats, powder coating, TB optimizing, Gutted cats, etc BNMotorsports is now the preferred distributor of Contour/SVT/Mystique Indiglo style gauges!!!bnmotorsports@msn.com
|
|
|
|
Joined: Jan 2001
Posts: 3,421
Moderator
|
OP
Moderator
Joined: Jan 2001
Posts: 3,421 |
Originally posted by bnoon: 5 or so HP of the high flow cat pipe. Well i guess thats not too bad of a gain. Sorry brad one more thing. with the highflow cat will it get rid of that sulfer/rotten egg smell when im WOTing it. and with the cat on will it change the sound of the exhaust note any(deeper). thanks for you help brad
|
|
|
|
Joined: Jan 2001
Posts: 3,421
Moderator
|
OP
Moderator
Joined: Jan 2001
Posts: 3,421 |
Ohhh and thanks for helping out also LBVSVT
|
|
|
|
Joined: May 2000
Posts: 2,847
Moderator
|
Moderator
Joined: May 2000
Posts: 2,847 |
With my Bassani and Off-road y, I have drone out the a$$. I plan on getting a high flow resonator soon. It is also a little raspy. Brad, I took it to an exhaust shop Monday and they cut about an inch off of the Bassani to prevent it from hitting the heat shield, so it is a little quieter than our trip to Home Depot . Still need a resonator though, may try the ugly tips temporarily, we'll see how motivated I am tonight after class.
|
|
|
|
Joined: Jan 2001
Posts: 3,421
Moderator
|
OP
Moderator
Joined: Jan 2001
Posts: 3,421 |
Originally posted by I-Dom-In-8:
with the highflow cat will it get rid of that sulfer/rotten egg smell when im WOTing it. and with the cat on will it change the sound of the exhaust note any(deeper). can anyone answer this last question for me plez
|
|
|
|
Joined: Jun 2000
Posts: 3,562
Member
|
Member
Joined: Jun 2000
Posts: 3,562 |
Rotton egg smell can come from several things. A clogged cat, bad positioning of the cat, fuel system lean, fuel system rich, exhaust leak... It's up to you or your mechanic to try to hunt down the cause.
Brad Noon '99 SE MTX 3 point oh my God H.O. 179HP/178TQ BNMotorsports Floormats, powder coating, TB optimizing, Gutted cats, etc BNMotorsports is now the preferred distributor of Contour/SVT/Mystique Indiglo style gauges!!!bnmotorsports@msn.com
|
|
|
|
Joined: Jul 2001
Posts: 425
Member
|
Member
Joined: Jul 2001
Posts: 425 |
Ok i-dom-in-8, this is what i did:
SHO Y-pipe w/ cat 18" Edelbrock RPM 2.25" stock tip mufflers
Sounds more rumbly than stock, with the same nice note (a little more healthy) at WOT. Big performance increase, as the stock res is 2" inside, and the sho y-pipe ends at 2.5". What i did was to have the shop make a reducer (2.5" to 2.25") pipe right after the cat on the y-pipe, then hook that up to the 2.25" edelbrock. BIG performance increase, prob 7-10 hp at 6500 RPM, and louder exhaust note, but very little drone. Kind of like Cardoc's exhaust sound, but a little more like a 6cyl rather than what his sounds like (8cyl, at least to me). Hope this helps.
I heed the call of the curb
|
|
|
|
Joined: Jul 2000
Posts: 1,496
Member
|
Member
Joined: Jul 2000
Posts: 1,496 |
Anyone have any experiences with Bassani and the Sho-Shop y-pipe that's got the hi-flow cat in it?
I'm worried about drone, since I run my Bassani without the tip resonators, and it's marginally close to being annoying on long hauls.
Any input would be greatly appreciated.
JaTo Overland Park, KS JaTo@kc.rr.com
99 Contour SVT #143/2760 Modded to Taste
00 Corvette Coupe Modded to Haste
|
|
|
|
Joined: May 2000
Posts: 2,631
Member
|
Member
Joined: May 2000
Posts: 2,631 |
With the off road Y on my old tour, I was about a 12hp gain and 6tq. I have pictures of my dyno's on my link in my sig
Merlin
281hp 324tq Timing 14' FP 36,24lbs,190lph,75Maf,65tb,cobra upper&lower,B303, GT-40 Crate with X al heads, Mac shorties, Off Road H,2chamber Flow's dumped, Tokico 5wys, Hotichkis Ctrl Arms, Alum Drive shaft, 3.73, Sub Frame,Steeda Tri-Ax, 94 Seats Drivers side powered.
|
|
|
|
Joined: Jul 2001
Posts: 763
Member
|
Member
Joined: Jul 2001
Posts: 763 |
the rotten egg smell is unfixable its the 3rd cat ford replaced mine many times on mine and my wifes car and it never went away so i gutted that cat out and no more eggs!!
|
|
|
|
|