Holset install

[camboscams]

Last post, then i'm done for the night. It is currently straight piped and uncomfortably loud. I have read the muffler thread but it is too convoluted to extract much info out of it. I am no longer 16 anymore and don't want to wear earplugs when i drive it, so what is a good, durable, and long lasting muffler that someone can vouch for? It was loud with the vnt and i have a hunch that the freer flowing Holset will be even louder.

Thanks

[theman53]

The holset should be enough muffler, if it is not the pipe is probably hitting the crossmember. Or you didn't get the pipe out the back of the car. Or you don't have an intake box. My 1.6 is now as quiet as my tdi that doesn't have the belly pan or engine cover.

[camboscams]

No the pipe isn't hitting the crossmember there is a difference between a metallic rattle and exhaust volume... Will the holset quiet the exhaust down more than the VNT because i found the straight piped VNT to loud. The exhaust runs all the way to the rear bumper.

[RunninWild]

I've got a vibrant ultra quiet resonator to a straight pipe on my stock 1.6td and the exhaust is audible (not very loud) but the engine can be heard over it. A muffler I've used in the past and was planning on using is a dynomax super turbo. It is cheap fairly quiet and made a great sound on my old 2.5l v6 engine with a high flow exhaust. Was much quieter then the magnaflow it replaced. On a vw td with a quality resonator I'd expect it to be almost silent at idle with a nice growl when you hammer on it. It also has a 3 month sound guarantee so its pretty harmless to give it a try.

The aero turbine also seems to be a fairly popular choice.

[camboscams]

Thanks RunningWild! That is exactly what i wanted to hear. I like the compactness of the vibrant resonator, but how does it sound at cruising speeds? Any drone?

Thanks

[theman53]

No the pipe isn't hitting the crossmember there is a difference between a metallic rattle and exhaust volume... Will the holset quiet the exhaust down more than the VNT because i found the straight piped VNT to loud. The exhaust runs all the way to the rear bumper.

One would think it would sound different and I didn't brace my downpipe for about a year, but it doesn't sound metallic at all. Mine didn't anyway, it sounded like really loud exhaust drone. In theory the vnt should quiet it more than the holset. I would bet the most of the noise is intake and pipe related. Do you have a pic of where it exits or the entire exhaust ?

[RunninWild]

I actually just installed the resonator last weekend and the truck isn't quite ready to be driven. I've only had the engine idling and revving a bit but wasn't that loud. So I can't really comment on drone or cruise noise. That being said I didnt think it was super loud before the resonator. Mine is also in a soft top Suzuki samurai so interior noise and drone is probably going to be quite a bit different then it would in a car.

For what it's worth here's a video. Most of the noise you hear is the actual engine vs the exhaust.

[rallydiesel]

Straight piped, a wastegate turbo will be louder than a vnt especially when the wastegate opens.

[camboscams]

Hoping to get it finished up tomorrow. I also ordered a Vibrant resonator as recommended by Runningwild too so i am anxious to see how well it quiets it down.

[camboscams]

It lives... More to come soon

[camboscams]

It is very interesting.... I love it and can't wait to drive it more! It is boosting around 10-15 psi for now and is extremely linear in how it boost's and pulls. Before with the VNT with mechanical vane control the boost would hit hard! With the Holset, it starts to boost very low and continues to spool at a very reasonable rate. My egt's are way down, before i could hit the 1200deg range pretty fast with lots of pedal but now it takes quite awhile to reach that temp, enough that just from habit i feel the need to let out of it to keep it from getting too hot but i'm just over 1000 or so. I can still reach those higher temps but only after running it pretty hard. So far it is a win, i will report back after more driving and installing the resonator. I will say this, due to time constraints i didn't make a permanent airbox and i have the filter directly on top of a silicon 90deg fitting at the turbo inlet, it sounds like it is moving an insane amount of air! More so than the vnt ever sounded like.

[RabbitJockey]

what vnt did you have before?

less boost but also less egt?  how is smoke?

[theman53]

At 15-20 psi it really is just getting started. Your EGT will not get above 800f if you had around 30psi I bet.

A vnt gives you full boost almost instantly, where this holset will build boost almost instantly but won't reach full boost for a while. So the vnt felt like you had something and left you wanting more and the wastegated holset feels like if you want more just ask it for more by pressing the pedal more.

[Jetmugg]

I haven't noticed my wastegate bracket flexing, but then again, the way I have my boost controller adjusted, the WG almost never opens anyway.

Mine has seen a high boost of 40 psi, at which point, the clutch started going away quickly (136.xx mph pass).

For the 2016 season, I'm going back with an 02A trans, and much heavier-duty flywheel, clutch, and PP setup.  I'm hoping for 140 mph.

Steve.

[camboscams]

Being that it is a mech 1.5l block and head 15psi is all i feel comfortable running. Or else it would be set at a much higher pressure! I was running a VNT-15 set around 15psi so it is the same boost psi but much lower egt. Nice description TheMan, can't describe it better myself. I'll report back after i drive it a bit more.