Stupidly loud Ktec stealth

[hsustyle]

Will a silenced centre section make a decent difference to the loudness of my Ktec stealth? It's very loud at pretty much any rpm.

It's on a ph1 with 182 manifold, link pipe and Supersport Center section.
My 182 with a decat and non resonated Ktec /Janspeed was really raspy, not boomy and in Comparison, not loud at all.

I'm looking to have the droopy stealth exit replaced by a 2.5 inch recessed exit, hoping to face the noise out back instead of down?

Any quieter alternatives or anyone want to swap?

 

[hipwell]

I've got the same problem.

I'll be getting a centre section fitted in a few months due to recent news of a baby which I don't want to deafen. If it's still too loud it might be by by Clio, hello boring old man car

 

[Ex-User (19928)]

I feel like it was jonff off here who had a ktec stealth WITH decat when CS did a cat and fiddle run many years ago.

Was one of the loudest cars I've ever witnessed on the road lol.

 

[hipwell]

I was hoping to try decat with a centre section as that was defiantly the best sounding setup on my 182 but that was with a n.a. speed 2.25 which just sounded amazing to be honest. The stealth is 2.5" so probably why there's the extra boom

I read somewhere that if you chop the tail pipe at a 45 degree angle it won't be as loud as the noise won't be going straight to the floor

 

[Fletcher]

A silcenced centre section will make it quite a bit quieter.

 

[hsustyle]

My 182 had a 2.25 ktec /Janspeed decat system without a mid silencer and it was a lot quieter and not boomy at all.

I'll get the tip chopped next week and have a recessed tip put on, hopefully face the sound away

 

[imprezaworks]

Recessed will make it better.

 

[imprezaworks]

I feel like it was jonff off here who had a ktec stealth WITH decat when CS did a cat and fiddle run many years ago.

Was one of the loudest cars I've ever witnessed on the road lol.

Think it’s the video I remember. Stupid loud lol

 

[Ex-User (19928)]

Think it’s the video I remember. Stupid loud lol

It was mad mate, I was at the back of the pack in my MX5 and he was somewhere in front, maybe 1/4 mile away, and it was still disturbingly loud.

 

[imprezaworks]

 

[ADS_V6]

Had exactly the same.Switched too silenced centre and noise and drone was 10 times better

 

[hipwell]

Had exactly the same.Switched too silenced centre and noise and drone was 10 times better

I like the sound of that!

I also like the idea of a recessed tip.

Could a stealth back box be modded to look like a recessed and fit into a cut out in the bumper?

 

[Danf2681]

I did this to my Ktech stealth and it made a huge difference.

 

[hipwell]

View attachment 1347478
I did this to my Ktech stealth and it made a huge difference.

Really, that sounds promising.

I'm thinking about doing something similar but having it straight exit into a 182 style bumper cut out.

 

[bloke]

even with a box and the tail cut to more of an angle it's still not a good system, just can't get them sounding nice or reasonably quiet.

i won't remind you about me saying the pms system would be ideal for what you want :tongueclosed:

 

[Ex-User (19928)]

Yep that's the one.

 

[imprezaworks]

I remember watching that thinking it sounded awesome. Now, I’m not so sure.

Age thing lol.

 

[Ex-User (19928)]

I remember watching that thinking it sounded awesome. Now, I’m not so sure.

Age thing lol.

It actually does sound pretty wild. Not something I'd have, but it absolutely howled. Very cool when you're on a run with 20 other cars. Probably a bit much when you're navigating the parking spaces at Waitrose though.

 

[imprezaworks]

Yeah lol, definitely the latter

 

[MrBlonde]

I got a tip made up on my stealth & it made a bit of a difference,but i still get the drone nosie at 75/80mph on motorways etc.
To me it sounds like it comes from the front like fire wall part or centre section.

But i guess it doesnt help when mine is a cup with no sound deading.

 

[yeecup]

My cup has a prospeed stealth exhaust with a centre silencer and I'd say it's pretty much perfect, no drone and pretty quiet which is great as I prefer induction noise. Pretty lucky as it was fitted by one of its previous owners. I had ktec stealth with no centre silencer on a ph1 172 and it was awful. Loud and droned like a b**ch.

 

[MrBlonde]

I may look into a custom exhaust next year,but then theres no knowing if that will be any better.

 

[imprezaworks]

Not selling it now mate?

 

[MrBlonde]

Not selling it now mate?

No mate,i would like another car but for what i’ll get for the Cup its not worth it at the moment.So just going to keep the cup maintance up & maybe get a set of 2118’s next year at some point or some other 15inch alloys.

 

[hipwell]

I got a tip made up on my stealth & it made a bit of a difference,but i still get the drone nosie at 75/80mph on motorways etc.
To me it sounds like it comes from the front like fire wall part or centre section.

But i guess it doesnt help when mine is a cup with no sound deading.

View attachment 1347661 View attachment 1347662

Looks awesome that. How much did it cost? What tip did you use?

I wish I'd just bought the recessed in the first placed by liked the idea of a stealth at the Time

 

[MrBlonde]

Its only cost £60 & i went to a custom exhaust place,i just wanted him to cut the stealth pipe off and weld on a straight cut pipe.
I wasnt to sure at first but i like it now.

@hipwell

 

[hipwell]

That's not bad at all.

It'd look better with a 182 trim around it though but the cut out may be a bit big for the now

 

[MrBlonde]

That's not bad at all.

It'd look better with a 182 trim around it though but the cut out may be a bit big for the now

Yeah ive tried a number of different trims,rubber etc & nothing looks good or fits.So will leave it like that unless i come across anything that will do the job.

 

[mintno1]

I ditched my KTEC on my original Ph1 as it was terrible on the motorway, the drone gave me a headache I would say on my cup I have a 182 manifold with decat and silenced PMS exhaust and the 182 manifold made it considerably louder, it doesn't drone and is still quieter than the KTEC was but the manifold definitely made it louder

 

[MrBlonde]

I may have to sell the ktec next year then mate & look at PMS or something like that or custom job.
@mintno1

 

[mintno1]

I may have to sell the ktec next year then mate & look at PMS or something like that or custom job.
@mintno1

I would recommend the PMS to anyone, it's a great exhaust and fit's perfectly, if you can get over the cost of them :smile: they don't seem to come up that often 2nd hand either. Are you on the 172 manifold still? It did make quite a difference on the PMS with the 182 manifold, I was surprised

 

[MrBlonde]

Yeah mate still on the orignal manifold,i was thinking maybe its loud on motorways because its the 2.5inch system and not the 2.25inch maybe?.the sound of it is fine its just the drone on straight roads.

@mintno1

 

[mintno1]

Yeah mate still on the orignal manifold,i was thinking maybe its loud on motorways because its the 2.5inch system and not the 2.25inch maybe?.the sound of it is fine its just the drone on straight roads.
@mintno1

The drone was the reason I got rid of the KTEC, I thought I was just getting old but it was awful :smile:

 

[MrBlonde]

The drone was the reason I got rid of the KTEC, I thought I was just getting old but it was awful :smile:

I know mate,i got the chop on the tailpipe to try help but didnt,i dont think you get the drone from the rear to be honest,i think maybe centre section as thats where you can actually hear it.
I might just get a custom centre section made up @mintno1

 

[mintno1]

I know mate,i got the chop on the tailpipe to try help but didnt,i dont think you get the drone from the rear to be honest,i think maybe centre section as thats where you can actually hear it.
I might just get a custom centre section made up @mintno1

I wanted to try a silenced centre as mine was unsilenced which wasn't helping but I never managed to find one second hand, making one up would work though, could the exhaust place that did the back box for you help?

 

[MrBlonde]

Yeah i will go to the same place that did the tail pipe,i do have a res centre box with this system.I guess have to just see what they say @mintno1

 

[karol_SVK]

Hi. Had the same problem few years back. The k-tech stealth was fine at high rpms but otherwise was loud at cruising. Ended up on stock exhaust and cant complain. I had the version with center silencer.

Sent from my SM-G930F using Tapatalk

 

[MrBlonde]

Hi. Had the same problem few years back. The k-tech stealth was fine at high rpms but otherwise was loud at cruising. Ended up on stock exhaust and cant complain. I had the version with center silencer.

Sent from my SM-G930F using Tapatalk

I think thats the prob mate,its nice as when driving.Its just on crusing on A roads and motorways,i still dont understand how the aftermarket systems are so expensive tho.As its a pretty easy simple system on the 172.

 

[hsustyle]

We have a winner
Had a 2.25 inch pipe welded on. It sticks out by less than an inch, sits perfectly in a small recess and has made a MASSIVE difference.
No drome, none of that headache inducing resonance, night and day. Bit of rasp around 3k and more after 5, so much quieter inside the car.

This is the Supersport version, 182 manifold and decat link pipe.

Pics of it fitted once I fit my PMS carbon fibre surround.

 

[MrBlonde]

So looks like 2.25inch maybe the answer.I might change the centre section to that size if i can,but then the rear box is still 2.5inch,but would be a start.