Contour Enthusiasts Group Archives Forums Modifications General Mods Any one with y-pipes

You shouldn't lose bottom end (unless they used oversized piping??? You don't mention sizes)
But you should expect to lose high rpm (peak) HP if they deleted the half U bend for the back (right) cylinder bank.

Merlin - My car only has 1 winter on it (driven sparingly) and I doubt I could get the 3 front bolts out of the cat. Look like solid rust! That must have been a real bear! The 2 bolts that flange the catback don't seem too bad at all?

I having a heck on a time trying to figure out how to just mate a custom catback to the existing POS cat pipe (has 2 S-bends and is offset for no apparent reason! Wish I had a Ford engineer to beat! ) and then be able to upgrade when I get the headers (they are 2-bolt vs stocks 3-bolt offset setup)

Have you been through a smog check yet? Word from my smog guy ( Calif) is:
if you alter anything from intake to last o2 sensor and do not pass the smog test, the max. amount you have to spend to fix ( now at $475) is waived and you must fix at whatever cost and you are classified as a gross polluter and may lose the vehicle if you cannot fix and pass. jj ( is Oceanside SMOG II ?)

There should be No reason why it wouldn't pass a smog test. (High-flo cat y-pipe) Visual and sniffer

The "Offroad" pipe Merlin installed still should if the engine was sufficiently warm. (sniffer - of course not a visual) However he lives in Kansas where there are no inspections or testing.

That is correct. It is expandable where you can cut pipeing and ad a high flow cat later in use. I still have an exhaust leak. I had some bolts that did not see to mount good, but look solid.

I tell you what I am suspect about the sound of it, but the POWER is noticable. I didn't know what to expect. Here is my guess for my dyno on saturday.

hp 167 tq 159


Well, who knows till saturday when the dyno chasis tells me




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Sincerely
Merlin
Kansas City CEG
99 SVT Black #1210
1/4 15.564@ 88.24 mph
KKM intake/Custom Exhaust/Fog light mod /20%tint Dyno=163.8HP,148.5FT/LBS
CHIP Dyno'd 159.3hp 154.4tq 1/4=15.502@88.95
Sho off road y

OK Merlin,
I think I've asked you before, but now you have a y-pipe. Mine has a cat, but still...do you have a lot of in-cabin drone?
I just bought some 2.5" piping w/ a middle muffler, and I'm keeping the rear (post y-split) stock...for now. I'm super tempted to chop those rear mufflers outta there. Think I'll have too much drone??? Pipe goes on tomorrow morning!

I know nothing about exhaust system so i'm going to ask this quick!..lol
I have a 96 SE MTX V6, I have NO exhaust mods. Can I buy the sho-shop Y pipe and do a direct replacement or do I have to get something else? Not sure if pipe diameter size factors in here as I know there is a diff in Non-svt's to Svt's (2" as apposed to 2.25"). Thanks.

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Simon W. Las Vegas.
96 SE V6 MTX Tereador Red
Performance:
~~Grizzly OEM Clutch Kit~~KKM Induction~~Mintex A/F Street Pads~~TH fix
Dress up:
~~KKM Pedal Covers~~Roger R Dead Pedal :)~~B&M Shift Knob~~H.I.D Low and High beam Super Whites~~Tint
Sound Upgrade:
~~Poineer CD deck~~2 Rockford Fosgate 10" subs~~Sony Explode amp~~Infinity Kappa 512 5x7's up front

Simon,
You can get a SHO Shop y-pipe. It'll bolt right up to your existing pipe. You'll fully reap all benefits of the y-pipe when you upgrade the rest of your exhaust. You'll definately feel the difference, though, with just a y-pipe.
-D

As far as Drone gones on mine. Drone is really not to different. At 4K letting of the gas there is some drone, but I have not done any long highway miles with it yet to really say YA or NA. The exhaust is lounder, but it doesn't really effect in cabin sound.




Sincerley

Merlin

Hey, now I got some miles on my car and the reset computer. I have noticed that I don't feel the secondaries open up. My guess is That I have gained a lot more lower end and It makes up for the dip when the secondaries kick in. Any one else notice this with there Sho pieces???

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Sincerely
Merlin
Kansas City CEG
99 SVT Black #1210
1/4 15.564@ 88.24 mph
KKM intake/Custom Exhaust/Fog light mod /20%tint Dyno=163.8HP,148.5FT/LBS
CHIP Dyno'd 159.3hp 154.4tq 1/4=15.502@88.95
Sho off road y

I noticed it when the 73mm MAF went in so the y-pipe made no difference in that respect, but I know what you mean.

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Black 98.5 SVT w/ KKM intake,73mm MAF, ASP pulley, SHO Shop Y-Pipe w/ no main cat