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No mufflers

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Posted by: 98LSC32V

Will a Mark VIII pass the sniffer with no mufflers?

Posted by: jdlmkviii

Yes but fail the visual inspection. (In PA at least)

Posted by: MediumD

The mufflers have nothing to do with the amount of emissions the car... emits. Now if you just remove the mufflers, the sniffer won't fit in the old pipe because there's a bend there, so you'd have to replace the mufflers with pipe (which is a good idea anyway, otherwise exhaust can get up in the trunk and interior of the car.)

Now running around with no mufflers is likely not legal in your area, so they still might not pass you for that reason. But the emissions should be OK. I'd recommend giving them a call and ask.

Posted by: gangstaMK8

Quote:

Originally Posted by 98LSC32V

Will a Mark VIII pass the sniffer with no mufflers?

i run with no mufflers just tips and a high flow cat...no problems with inspection stations or cops.

Posted by: unity

DUDE!!!! I want those cut out liners!!!!! Awesome!

Posted by: poniesviii

Unity, those would look like total butt if the car wasn't slammed.

gangsta, you get lucky with those cops! Small town? Those are like, 4" tips. They have got to beller. Then again you have stock exhaust right? Maybe not. I have custom from manifolds back 2.5 w 2.5 tips, I can't idle and not wake up the neighbors.

Posted by: 04SSHD

In california it will fail the visual, but I know a smog guy that doesn't care if I have mufflers or not so it passes with no problem...

Posted by: turborich

I took my rear mufflers off and ran 3" wide 24" long tips. I had a muffler shop weld em on for me. No problem at all! It sounds awesome and it doesn't effect emissions at all.

Posted by: poniesviii

Those look good Turborich.

Any side shots?

I'd like to find some nice slashcut ovals with a rounded lip but not a goddy- rounded lip.

Posted by: turborich

Yeah I wanted some oval tips as well but got tired of searching so I picked these up. I had them welded on 100% level, I should have had the fronts a little lower though I think. Even though they are level, they don't look that way because of the way the bottom of the fender is. Anyways, Thanks for the compliment!!! Here is a pic of them. They look better when you are looking at them while standing or nealing, not on the floor such as this pic. LOL

Posted by: 02LSE96LSC91SE84TC

Wisconsin just plugs in OBDII cars and your off if your computer is clean. I've passed with the glass packs on my MarkVIII and my 98F150.

I also passed on the rollers with my MarkVII without mufflers and its plenty loud with 2 1/2 cat back no mufflers.

Is this a tip thread or what?

Posted by: 98LSC32V

Did you guys lose any low end torque with no mufflers? Gain any top end?

Posted by: MediumD

I don't think anyone's dyno tested it.. And an ass-dyno isn't accurate enough to actually notice a difference. If there is a difference it's not much of one either way (other than in volume.)

Posted by: gangstaMK8

lol relatively a small town but no headers on the car the rest of the exhaust i had redone with high flow cats and a resonator... it is loud but not overly loud. I dont drive the car much but when i do i get followed not for the exhaust just the way the car looks. The exhaust cutouts came stock on my car and the tips are 4 inch...almost went with 5 inch tips but figured that would go to far.

Quote:

Originally Posted by poniesviii

Unity, those would look like total butt if the car wasn't slammed.

gangsta, you get lucky with those cops! Small town? Those are like, 4" tips. They have got to beller. Then again you have stock exhaust right? Maybe not. I have custom from manifolds back 2.5 w 2.5 tips, I can't idle and not wake up the neighbors.

Posted by: shiryu0

no mufflers here, cops just stare at me as i go by them hehe

........everybody asks me if i put flowmasters on it

.........more pics in my gallery thing.

Posted by: 95sc

What mufflers and what tips

Posted by: 98LSC32V

Why no tips?

Posted by: poniesviii

I think I found the perfect set of tips for the mark viii today. Wasn't looking, just started staring at the porsche in front of me on lunch hour. Curvature and everything looks PERFECT. Going to do some research.

Posted by: 98LSC32V

Good luck getting those tips from a Porsche dealer, they probably cost a few hundred dollars or more...

Posted by: 02LSE96LSC91SE84TC

Quote:

Originally Posted by 98LSC32V

Good luck getting those tips from a Porsche dealer, they probably cost a few hundred dollars or more...

You got that right. I stumbled across some while looking for tips for my LSE and was amazed as to what they cost.

Posted by: poniesviii

Well, Oh well! I'm not close to retirement, and I need new tips!!

edit: I might agree. But I want 'em.

Posted by: Nitrobasher

OH

!!! I KNEW I FORGOT SOMETHING!

you know what else i forgot to do? bolt the rest of it back on

it ends after the first u clamp

This makes the car extremely loud, do it at your own risk haha, I know that it is jsut a simple bolt on thing but its a pain in the ass.
Also to give you an example of how loud it is, Ive been pulled over twice for the noise, but not been given a ticket cause both cops gave me props for bieng "unique" haha

***IF YOU DO THIS YOU MUST PUT ON TIPS THAT POINT DOWNWARD, IF YOU DO NOT THE EXHAUST FUMES WILL TRAVEL UP INTO YOUR INTERIOR!!!*** trust me i learned the hardway

Posted by: JC1994

I'm running no mufflers on my 94. high flow cats only, sounds great.

Posted by: JC1994

I put some 24" long 3" diameter stainless tips where my mufflers used to be on the 96 and it went from dead quiet to obnoxious. I love it!!!

Posted by: 98LSC32V

Quote:

Originally Posted by JC1994

I put some 24" long 3" diameter stainless tips where my mufflers used to be on the 96 and it went from dead quiet to obnoxious. I love it!!!

Any change in performance?

Posted by: JC1994

that and the air intake silencer removal felt like about 10-15 HP. no kidding. it really picked up.

Posted by: Nitrobasher

dont believe that for a second...

Posted by: 98LSC32V

The stock mufflers probably weigh 20-25 lbs each, just removing the mufflers you gain 4-5HP from the weight savings. You probably gain another 5 hp from the improved exhaust flow since the stock mufflers don't flow at all. And probably 3-5hp from removing the resonators. Sounds very reasonable to me.

Posted by: MediumD

I removed the silencers and mufflers from my 94, no track times from before, but it didn't feel like it picked up much of anything. It really takes 15-20hp to notice any difference in the ass dyno.

Posted by: rmac694203

I don't think weight savings translates into horsepower...

Posted by: abe_lincoln78

Alright. . . heres the skinny on weight savings and improved accelleration. I think what the guy is getting at is that the removal of the muffler takes enough weight out of the car to improve its accelleration. He suggests that this improvement is roughly equal to the what 4-5hp would produce.

Honestly, you will probably not notice the accelleration improvement from removing 50 pounds from the car. Whats worse is that you took those 50 pounds out of the back of the car, which lessens the available traction from the rear tires. In all fairness to his other claim though, the stock mufflers likely don't flow very well and replacing them with a pipe the size of the rest of the tubing on the vehicle should give some kind of HP increase, even if it is not noticeable.

As far as tips on how to do the exhaust, I've heard some wicked sounding 4V 4.6's. My suggestion would be to play off that sound by going with 2.5 mandrel bent from the cats back and simply use straight 2.5" tips. This should give a nice little cackle on the high end with an incredlibly sweet midrange sound. I can't think of any engine that had a more balanced sound than that quad cam 4.6. Enjoy!!!

Posted by: rmac694203

I removed my mufflers and replaced with tips. I don't think its any faster, but it sounds faster. I like the sound at WOT but the drone between like 2 and 4k is pretty bad.

Posted by: JC1994

I know it picked up at least 10 HP maybe 15. it was definitly slower before the mods and it is breathing MUCH better, I had to disconnect the battery for a while to reset the computer because the check engine light came on after I removed the silencers. my 94 did the same thing when I removed the silencers. with the silencers on it's breathing through a 2" diameter hole and now it's breathing through a 6" hole. that is going to make more power and it doesn't take rocket scientist to figure that out.

Posted by: 98LSC32V

Every 10lbs off the car is 1 horsepower gained. Having the weight removed off the rear of the car doesn't mean you will get less traction either.

Posted by: MediumD

Quote:

Originally Posted by 98LSC32V

Every 10lbs off the car is 1 horsepower gained. Having the weight removed off the rear of the car doesn't mean you will get less traction either.

So you're telling me my car makes 230rwhp, and I pull the seats out of my car and dyno it, it'll make 235rwhp?

And yes it does, simple physics say less weight over drive tires = less traction.

Quote:

Originally Posted by JC1994

I know it picked up at least 10 HP maybe 15.

Did you dyno it? If not, how do you know what it picked up?

Posted by: LuxurySportCoupe

Medium - He didnt say he got more horsepower if you read. He says the weight that was lost is equal to few horsepower. (IN QUARTER MILE TIMES)

So your saying that if you add 500lbs of concrete to the trunk you'd get more traction, right?

So does more traction mean you go faster? No. Not at all. It depends how go about it. Does less traction mean you go slower? No. Not at all.

Its all about a happy balance. For the record, "technically" it takes around 15 HP gain to "feel" a difference -seat of the pants, i've done stupid things such as removean air silencer and "felt" a difference but i'm sure theres no way removing an air silencer netted 15 hp.

Posted by: JC1994

Quote:

Originally Posted by MediumD

So you're telling me my car makes 230rwhp, and I pull the seats out of my car and dyno it, it'll make 235rwhp?

And yes it does, simple physics say less weight over drive tires = less traction.

Did you dyno it? If not, how do you know what it picked up?

Because I know that 5 other people that rode in the car before the mods and after. all said that they could feel how much better the car was running compared to before. I'm not sure EXACTLY how much more HP was gained but it's definitly got more power that's for sure, my experience tells me that it feels like at least a 10HP gain. why the big deal anyways? I'm just saying that it runs better than before the mods. I have been racing cars for 25 years so I think I know what a 10HP gain feels like. would you?

Posted by: JC1994

Quote:

Originally Posted by LuxurySportCoupe

Medium - He didnt say he got more horsepower if you read. He says the weight that was lost is equal to few horsepower. (IN QUARTER MILE TIMES)

So your saying that if you add 500lbs of concrete to the trunk you'd get more traction, right?

So does more traction mean you go faster? No. Not at all. It depends how go about it. Does less traction mean you go slower? No. Not at all.

Its all about a happy balance. For the record, "technically" it takes around 15 HP gain to "feel" a difference -seat of the pants, i've done stupid things such as removean air silencer and "felt" a difference but i'm sure theres no way removing an air silencer netted 15 hp.

I did more than the silencers I also removed the stock mufflers and put 24" long 3" diameter stanless tips where the mufflers went. bottom line guys is the car picked up a noticable amout of power. and it was like when I put underdrive pulleys on my 5.0 stang which was a 10-15HP. I think I know what that amount feels like.

Posted by: MediumD

Quote:

Originally Posted by LuxurySportCoupe

Medium - He didnt say he got more horsepower if you read. He says the weight that was lost is equal to few horsepower. (IN QUARTER MILE TIMES)

Technically he did say removing weight is worth HP. I know exactly what he means, it's just not exactly what he said...

Quote:

So your saying that if you add 500lbs of concrete to the trunk you'd get more traction, right?

So does more traction mean you go faster? No. Not at all. It depends how go about it. Does less traction mean you go slower? No. Not at all.

Adding 500lbs of concrete to the trunk would get you more traction. Why do you think people add weight to RWD cars/trucks in the snow? More traction will hook better but doesn't help top end. Which is why VHT is generally applied to the 330' or 660'..

Quote:

Originally Posted by JC1994

I'm just saying that it runs better than before the mods. I have been racing cars for 25 years so I think I know what a 10HP gain feels like. would you?

Nope, I wouldn't know what a 10hp gain feels like in a car with 290hp. That's a 3% gain, and wouldn't be noticeable by anyone IMO. Like this guy says:

Quote:

For the record, "technically" it takes around 15 HP gain to "feel" a difference -seat of the pants, i've done stupid things such as removean air silencer and "felt" a difference but i'm sure theres no way removing an air silencer netted 15 hp.

Although I think it's more like 20hp before you can actually notice a difference. I think most of the times when people feel a difference with small mods it's all in their minds. Especially when exhaust mods are involved ("it's louder so it must be faster.")

Posted by: JC1994

Quote:

Originally Posted by MediumD

Technically he did say removing weight is worth HP. I know exactly what he means, it's just not exactly what he said...

Adding 500lbs of concrete to the trunk would get you more traction. Why do you think people add weight to RWD cars/trucks in the snow? More traction will hook better but doesn't help top end. Which is why VHT is generally applied to the 330' or 660'..

Nope, I wouldn't know what a 10hp gain feels like in a car with 290hp. That's a 3% gain, and wouldn't be noticeable by anyone IMO. Like this guy says:

Although I think it's more like 20hp before you can actually notice a difference. I think most of the times when people feel a difference with small mods it's all in their minds. Especially when exhaust mods are involved ("it's louder so it must be faster.")

loudness has nothing to do with it man. I am not going to argue about it, I and 5 others could feel the modest power improvement. I am not some punk kid who thinks that if it's louder it must be faster. if you think that your not going to make more power when you go from pulling air from a 2" hole to a 6" hole and getting rid of the restrictive stock mufflers then you are wrong.

Posted by: MediumD

If the motor doesn't do anything with that extra air then it won't make more power. Pulling the mufflers probably did allow a bit of extra power to be net, I still don't think it would be noticeable. Tell ya what, if I find a late 95-96 LSC like I've been looking for I'll do before/after track tests, correct them for density altitude changes, and see if there's a difference there. I'm not trying to argue that your car isn't making any more power (I do have the same mods on mine even,) I just really don't think you can feel a 2-4% change in power.

Posted by: 98LSC32V

What about going from Dynomax bullets to no mufflers, will I lose power or performance? The Bullets aren't loud enough for me and they are fully broken in. People always tell me it sounds great from the outside but inside is too quiet!

Posted by: 98LSC32V

ttt, is anyone running no mufflers with stock tips?

Posted by: 98LSC32V

Well I cut off my mufflers and am still using my stock gen 2 tips. I love the sound! Sounds like a stock 98 Cobra with off road x pipe. I think the sound is more "tuned" than if i got bigger aftermarket tips.

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