2XS Manifold Install.

[Nexus]

Well, Troy had his work cut out for him on this install; heat-worked studs etc snapping off and the like during install. 106,000K on the clock.
So big thanks to Troy for dealing with all of that...

At the moment I have only some first impressions as still taking it easy with it.

First logs indicate at least 20-30Nm gain, but as I haven't tried to get one, I couldn't tell you a Kw peak.

Throttle seems to be more linear, mostly I am taking it easy at the moment because I'm a bit shocked at how much on-boost noise is being made.

I'm not sure if I've acquired the "kettle" noise previously discussed, however the moment it goes from vacuum to boost there's a LOT of apparently induction noise. It's very noticeable in the cabin with the windows up, less so with windows down.

I'm not especially bothered by noise, but until I've checked with Troy that it's not a problem, won't be opening things right up to get measured peaks and a clearer idea of how things have changed.

Instrumentation suggests everything is normal and as expected - boost peaking @ 18.9 up ~1 PSI....

[Nexus]

OK, the "induction" noise, or whatever it is, is not as imposing as I thought last night. Turn air-con on - can't really hear it over the aircon. It definitely starts at the vacuum/boost threshold, and grows with boost, but today listening to it, it's nowhere near as loud as I first thought. Funny how a new noise has you second-guessing. I'd like to know what's making the noise, I suspect that some carefully placed heatshield material or sound deadener would filter the noise and make it less intrusive - not that it's as loud as I first thought. Heatshield material was removed for the installation and this might be allowing more noise into the cabin.

The manifold itself is has near equal shortest length runners, Troy put it together considering clearances for compatibility with larger (ETS) TMIC install.

06102010180[1].jpg06102010182[1].jpg

The manifold is hi-temp ceramic coated (black coating), and I've already noticed reduced underbonnet temperatures. It's really quite impressive how little heat radiates off the manifold itself; certainly heat-shield for the sake of heat-shielding would be redundant.
Throttle is definately more linear - less like a high-boost turbo and more of the 1:1 correlation between accellerator and throttle that a larger N/A would have.
Other first impressions were that while watching fuel consumption on the highway, I think that there's been an improvement of cruise fuel consumption by as much as 0.5 - 1L / 100Km
Cruising I'm watching 6.3-8L/100Km variations rather than 7-9L/100Km; time will tell.

[SarcasticOne]

i'll try and get a clip of the "kettle" for you (and others) in the near future, hoping to borrow a decent video camera to capture it

[LittleredMPS]

Mmmm, perty manifold.

[2XS]

I think all that damaged heatsheilding that was originally on you car would aloow some noise in.
We did put in the pace pipe too More moise from that too???

Open it up, I did All is good, go for it, log till you can't log no more.

[Nexus]

I think all that damaged heatsheilding that was originally on you car would aloow some noise in.

Yeah, I had a good listen last night on the way home - it's surprisingly loud mostly because the underneath shielding is gone, I think. The floor gets warm on a long trip, so I'm going to get a replacement heatshield. (Free centre console cup warmer in the meantime?)
For anyone who has recently had to cross creeks / streets-that-turned-into-rivers etc : Might be worth getting underneath and checking out the heat-shielding at the tunnel around your second CAT area. They don't like a good soaking, which mine had had several of over the last month or so. Mine was in the final stages of disintegration; rigid backing fibre/cloth was no longer rigid and resembled a black chux wipe, the insulation fibre had separated from the backing and the aluminium heat reflective material was separating from that, and was all generally tattered and falling apart.
Troy's probably still finding bits of it floating around his garage...

We did put in the pace pipe too More moise from that too???

Oh yes - second reason to approach water crossings with extra care, eh? Never know what stick or sizable rock might be under the surface ready to ambush your second CAT causing it to need replacing, hmm?
Yes, that's almost certainly contributing, specially considering the location the noise appears to emanate from. During the day it's not hugely noticable. At night, with MUCH less background noise, driving with aircon off and passenger side windows down a touch instead, it gets a bit intrusive

I've worked out what the noise was that alarmed me - this should make you laugh - it's the turbo and wastegate opening and closing. And sometimes it closes and stays closed at low speeds when you don't have your foot under it and then you suddenly get quite an unexpected racket from it. Which is what stopped me from getting under it straight away - an unexpectedly loud noise at an unexpected moment.

Worked it out last night listening carefully as it approaches boost and it starts the noise on/off on/off and then all-on as it crosses the boost threshold. It's audible at lower MAP, just not nearly as much. Then it clicked and I thought "Ya dill - that's the wastegate."

Open it up, I did

But of course

All is good, go for it, log till you can't log no more.

Seeing some nice torque increases. Fairly broad and flat with gains just about everywhere, except possibly all the action has moved up in the rev range maybe 500rpm (at most?). I think initially the boost builds much faster than stock manifold, then levels out and approaches peak boost just a touch slower. At a guess - the first 75% boost is almost without any lag at all, while the final 25% builds a touch slower - possibly. That's the bum dyno's opinion anyway. That responsiveness getting on boost is what gives the feeling of more linear throttle control - and responsiveness was what I was hoping to see...

I have a couple of logs from the trip down to brisney, and days prior to install, so hopefully I can find a sample piece of log to compare.
It's obviously got a good deal more at the top end over 5500rpm; enough to push habitual shift points up 500rpm or so...

[Grajy]

Lol @ Log...

[Nexus]

The ceramic coat having a few degree knock on effect with BAT, I think - with the stock mani if you stopped and checked the TMIC, it would be on the hot side of warm at the back, and cool at the front. When I checked with new mani the back is on the cool side of warm, quite noticable so that's got to improve the TMIC efficiency significantly...

[2XS]

Now delete the "Pending Install" from your sig

[Nexus]

Now delete the "Pending Install" from your sig

Done.

---------- Post added at 09:12 PM ---------- Previous post was at 08:56 PM ----------

log till you can't log no more.

Already there.
Response is outstripping the bluetooth OBD connection speed - Need to hardwire now, that should be somewhat faster....
And then main dashboard is overloaded with data, so Need minimal dash sets to log from...read less data means = bandwidth to sample faster...