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Old 03-19-2025, 04:11 AM   #11 (permalink)
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Quote:
Originally Posted by boingk View Post
...
2) Extensive underbody streamlining
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5) Lightened / minimal sound deadening
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7) 1.6L turbo-diesel 4cyl with 5spd manual
...
What exactly are the underbody streamlining factory 'mods' boink?

And isn't it a bit noisy with a diesel and minimal sound deadening?

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Old 03-20-2025, 06:41 AM   #12 (permalink)
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Quote:
Originally Posted by Logic View Post
I'm afraid I might have closed down your 'can of worms' here (this thread) boingk
<snip>
Or are we all still holding out breaths on boingk's mention of PTFE!?

What exactly are the underbody streamlining factory 'mods' boink?

And isn't it a bit noisy with a diesel and minimal sound deadening?
Hi mate!

No, haven't close it down at all. I've just got back from a drive actually and still going on this tank. I'm 180km in and still have the dash showing 700km+ remaining haha. The dash is showing a tank efficiency of 4.3L/100km (54.7USmpg) which isn't bad for a combined town/highway useage. I tend to drive slightly fast on the highway, too, so slowing down to a legit 100kmh instead of 115kmh or so would probably help but I don't like constantly getting overtaken so 110kmh would probably be as slow as I'll go.

At this stage I'm also considering getting a block heater to help with warmups as winter is coming and even here in Australia my area does get frosts and the occasional night-time low of -7'C (20'F) or lower. My relatively short ~7 minute morning commute usually only sees the car just warmed up nicely as I arrive at work so a heater would help aid economy with pre-warming.

I won't have any data on the PTFE until I get a baseline for the car without. I want at least 3 tanks before I use the PTFE - that seems fair.

The factory mods for the underbody streamlining mainly had a slightly lower front lip combined with an overall lower ride height and extended undertray. Nothing special but it all adds up. I'm looking at finding a similar-year model in a wreckers so I can poach its rear spoiler and do an aero-extension to streamline the rear some more while still looking reasonably factory.

The car is indeed a tad noisy compared to say a base Fiesta or Mazda 2 (both share the same platform) however its really only noticeable on acceleration. Its nothing offensive or overly intrusive but definitely noticeable when coming from a standard petrol-engined hatch. Personally I like it - its kind of endearing.
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Logic (03-22-2025)
Old 03-31-2025, 06:06 AM   #13 (permalink)
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Filled up today - 18.7L for 439km, so 4.25L/100km. Not bad considering it was mostly around town with some country roads and a short stint of freeway. It's not as good as the factory rating but it's not an EPA rating (being Australia) so actually seems about on par with most things I've driven - slightly worse in real life compared to the rating, in other words.

Anyway, with tyres at 38psi for this run I'm pretty happy. I'll go with 42psi for this run. I've put some fuel system cleaner in this tank which may or may not do something, but we'll see how that goes.

I'm still looking for another rear spoiler to make a partial kammback which will fit with factory placements, but again we'll see how it goes.

Cheers - boingk
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Old 03-31-2025, 07:24 PM   #14 (permalink)
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Quote:
Originally Posted by boingk View Post
Hi mate!

No, haven't close it down at all. I've just got back from a drive actually and still going on this tank. I'm 180km in and still have the dash showing 700km+ remaining haha. The dash is showing a tank efficiency of 4.3L/100km (54.7USmpg) which isn't bad for a combined town/highway useage. I tend to drive slightly fast on the highway, too, so slowing down to a legit 100kmh instead of 115kmh or so would probably help but I don't like constantly getting overtaken so 110kmh would probably be as slow as I'll go.

At this stage I'm also considering getting a block heater to help with warmups as winter is coming and even here in Australia my area does get frosts and the occasional night-time low of -7'C (20'F) or lower. My relatively short ~7 minute morning commute usually only sees the car just warmed up nicely as I arrive at work so a heater would help aid economy with pre-warming.

I won't have any data on the PTFE until I get a baseline for the car without. I want at least 3 tanks before I use the PTFE - that seems fair.

The factory mods for the underbody streamlining mainly had a slightly lower front lip combined with an overall lower ride height and extended undertray. Nothing special but it all adds up. I'm looking at finding a similar-year model in a wreckers so I can poach its rear spoiler and do an aero-extension to streamline the rear some more while still looking reasonably factory.

The car is indeed a tad noisy compared to say a base Fiesta or Mazda 2 (both share the same platform) however its really only noticeable on acceleration. Its nothing offensive or overly intrusive but definitely noticeable when coming from a standard petrol-engined hatch. Personally I like it - its kind of endearing.
I like the block heater idea. It's an easy way to make a std car a tiny bit PHEV!

As optimal operating temperatures are well above ambient there's no reason not to use them all year round IMHO.
Give the plug a timer and or wireless (app) and make it so pulling out of the garage etc neatly unplugs the cord and you're golden.

The question is what type of heater?
I'm tempted to say both an oil heater and a coolant heater:
Problem is a coolant heater on the engine side of the thermostat means plumbing it into the interior heater core plumbing and the valve to that heater core needs to be open to circulate the hot water. Great for winter. Not great for summer!
Perhaps just the oil heater in summer.

PTFE:
I look forward to the numbers.
I don't recall being nearly as impressed with it as ...er... that other additive when I tried it, but it's probably a good idea to run in the gearbox and diff properly 1st anyway.
That's certainly the case with BA.

Lightening I see is part of your car's eco package... kinda.
That's very important for town driving and there is even talk of lightened drilled out bolts online!
The nice thing with too long bolts etc; lightening a few when the mood takes you means the car's never out of commission for long.
More on that here:
https://ecomodder.com/forum/showthre...n-41665-3.html


Last edited by Logic; 03-31-2025 at 08:00 PM..
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