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 Post subject: Driving at night.
PostPosted: Wed Feb 06, 2002 12:51 am 
Maybe it's just me, but i find that when i am driving at night, my GTi seems alot smoother, and sounds alot better than when i drive during the day. Does this have anything to do with the temperature of the air being forced into the engine? If so, is there a mod that I can do to get this kind of performance while driving in warmer temperatures?<br><br>-Tommy.<br><br>'93 GTi. <br>Sydney, Australia. <p></p><i></i>


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 Post subject: Re: Driving at night.
PostPosted: Wed Feb 06, 2002 1:06 am 
I find that if I hold my chin a certain way,<br>that I get a good 5 extra horsepower...<br><br>Heh.<br><br>Well maybe the car sounds better at night because<br>there is less traffic around you?<br>If it were due to the air temp, then wouldn't you<br>notice better power first thing in the morning<br>during the winter season? (I'm from Canada, in Jan.<br>first thing in the morning can be -30'C)<br><br>Oh if you decide to make a 'cold air intake' for your<br>GTi, make sure it doesn't suck up a puddle one day<br>and kill your motor!<br><br>Darryl <p></p><i></i>


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 Post subject: Re: Driving at night.
PostPosted: Wed Feb 06, 2002 1:49 am 
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Joined: Thu Aug 23, 2001 5:35 pm
Posts: 870
Location: SINGAPORE
What kinda of filter you are using? Cone type or the stock filter? Air temperature does affect the performance of the car.<br><br>Unifilter in Australia sells a heat shield kit for the GTI.<br> <p></p><i></i>


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 Post subject: Re: Driving at night.
PostPosted: Wed Feb 06, 2002 9:49 pm 
Believe it or not, my GTi is completely stock, except for the steering wheel and the tinted windows. I 've even still got the Suzuki Tape Deck!! Can you suggest a filter for my GTi, and how much one will cost?<br><br>- Tommy<br>Sydney, Australia.<br>'93 GTi. <p></p><i></i>


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 Post subject: Re: Driving at night.
PostPosted: Wed Feb 06, 2002 9:59 pm 
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Joined: Thu Aug 23, 2001 5:35 pm
Posts: 870
Location: SINGAPORE
If you are not into serious mods, then you can try replacing the stock paper filter with a K&N replacement filter (Part # E-9132) for improved airflow. Cost is less than A$80 and the filter is washable and last very long! You can probably get the K&N filter from any performance shop in Sydney. Cheers!<br><br>Lee, Singapore <p></p><i></i>


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 Post subject: unifilter
PostPosted: Fri Feb 08, 2002 2:43 am 
<br>Im looking for a heatshield for my swift gti. Ive got a K&N pod on the car, and i measured intake temps, and they can be as high as 60c from standstill on a 19c day. <br><br>Any idea where I could find the unifilter one? And do i need to get a unifilter pod to replace mine.<br><br>Im in Australia.<br><br><br>Luke.<br><br><br> <p></p><i></i>


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 Post subject: Re: Driving at night.
PostPosted: Fri Feb 08, 2002 7:56 am 
I really cant see how there will be a noticable increase in performance when its dark and cold!ok i agree that when its colder it may give a tiny bit of extra power but how will it be noticable?<br>Thanks<br>Nick <p></p><i></i>


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 Post subject: Re: Driving at night.
PostPosted: Fri Feb 08, 2002 5:26 pm 
Night air is not only colder but contains more moisture. Both have the effect of increasing the effective compression.<br>The different air density can, in theory at least, change the exhasut note, but I can't tell any difference.<br><br>Iain <p></p><i></i>


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 Post subject: Re: Driving at night.
PostPosted: Sat Feb 09, 2002 6:30 am 
i agree that maybe there will be some extra power and the exauast may sound a little different but surely it wouldnt be noticable.if i got a noticable improvement in performane at night i wouldnt drive in the day!<br>Nick <p></p><i></i>


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 Post subject: Re: Driving at night
PostPosted: Sat Feb 09, 2002 4:11 pm 
Depends on the induction and type of filter, but there can be as much as a 10% difference betwwen a warm day and a cool damp night. The difference is very difficult to tell,--unless you had a time machine to shuttle back and forward.<br>that's why a decent dyno operator checks the temp and humidity and adds correction factors.<br>Iain <p></p><i></i>


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 Post subject: Re: unifilter
PostPosted: Wed Feb 13, 2002 10:41 pm 
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Joined: Thu Aug 23, 2001 5:35 pm
Posts: 870
Location: SINGAPORE
Try Unifilter at http://www.uniflow.com.au<br>I can't really remember the part # for the GTI heat shield. Just give them a call. <p></p><i></i>


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 Post subject: Re: definately!
PostPosted: Mon Oct 21, 2002 8:31 pm 
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Joined: Mon Jun 03, 2002 7:52 am
Posts: 1694
my car is much faster in the night! <p></p><i></i>


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 Post subject: Heat shields
PostPosted: Mon Oct 21, 2002 9:35 pm 
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Joined: Sun Jun 23, 2002 5:10 pm
Posts: 1644
Location: Brisbane
What...while you are asleep and dreaming, Jomo? *kidding*<br><br><br>A heat shield is easy to make - just use some 1mm aluminium, and bend it around the shape of the pod, whilst bolting it to the pod base. If you like, you can then clamp some tubing from the front of your car to aim at the pod. <p></p><i></i>


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 Post subject: Temperature
PostPosted: Tue Oct 22, 2002 6:27 am 
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Joined: Mon Feb 18, 2002 10:15 pm
Posts: 218
I noticed that too and tought it was only my imagination but then I went to the track (were you don't get timeslips but it cost %$ to race all you want) and on 2 different occasion the first time the car I felt it was fast and the second time I was feeling it slow... The first time I was passing the 1/8 mile at 105 km/h and the second time I was passing it at 95 km/h so temperature does make a difference!!!<br>The first time between every race I would stop the engine and let it cool down for about 30 minutes the hood open and the second time I was waiting in line on idle... I can see it too on the engine temperature guage... qhn the engine is just a tinny bit over half temp the car is slow... fells like it's pulling a trailer or soemthing... when it's right at the half point, it's okay...<br> <p></p><i></i>


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 Post subject: Re: Temperature
PostPosted: Wed Oct 30, 2002 11:17 am 
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Joined: Tue Oct 29, 2002 1:07 am
Posts: 437
Location: London, Ontario
I agree that there is a little noticable difference between night and day ... I also race dirtbikes and I always get my best lap times on cold cloudy days ... thanks <br> <p>chadiator@hotmail.com</p><i></i>


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 Post subject: Re: Temperature
PostPosted: Wed Oct 30, 2002 8:06 pm 
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Joined: Sun Sep 02, 2001 11:55 am
Posts: 2595
Location: Calgary, Alberta
You have to think though, that on a Swift GTi even a 5% gain is only 5hp at the flywheel.... <br><br>On the dynojet program if there is a 20 degree fareinhieght difference between the comparison of two runs, it will come up with a big "Warning, the first run was done at 98F, the 2nd was done at 70F, the comparison of these two runs may not be fair" type message.<br><br>Colder air is denser. That denser air is the same reason people at Sea Level make more power than guys like me at 4000ft. altitude. On water-cooled engines it's no where near as noticeable as an air-cooled engine, but still noticeable. My car feels quite a bit more fun right now in comparison to mid-summer heat when I did the dyno. <br><br>I still recall one Indy or Formula 1 driver being quoted as saying that he could feel the difference in performance if the sun went behind the cloud. <br><br>Maybe it was the drugs, but it's an awfully romantic thought. <!--EZCODE EMOTICON START :) --><img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)"><!--EZCODE EMOTICON END--> <br><br><br><br><br><br><br><br> <p><br>Kyle Jones <!--EZCODE BOLD START--><strong><br><br><br>Your friendly TeamSwift Op.<br><br>Junk-Yard Turbo set-up, formerly NOS-fed 1989 Suzuki Swift</strong><!--EZCODE BOLD END--></p><i></i>


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 Post subject: Re: Temperature
PostPosted: Thu Oct 31, 2002 5:06 pm 
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Joined: Tue Aug 21, 2001 9:19 am
Posts: 971
Location: Canada
Hey Kyle, you dyno'd in the summer? Was it with NOS or turbo or N/A? What sorta numbers did you get? <p>1989 Suzuki swift GTi<br>1970 AMX 360,auto,A/C<br></p><i></i>


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PostPosted: Thu Oct 31, 2002 6:57 pm 
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"if i got a noticable improvement in performance at night i wouldnt drive in the day!"<br>Nick<br><br><br>this is the most hilarious line ive ever read in the world!!!!!!!!<br>i cant stop laughing, this guy is cool!!!!! <!--EZCODE EMOTICON START :smokin --><img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smokin.gif ALT=":smokin"><!--EZCODE EMOTICON END--> <p></p><i></i>


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 Post subject: Re: Driving at night.
PostPosted: Thu Oct 31, 2002 8:20 pm 
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Joined: Fri Jul 05, 2002 12:35 pm
Posts: 51
Location: Espanola, Ontario, Canada
hey i am in ontario canada near sudbury to be exact but i feel a big difference when it turns night and cools off my car is more responsive maybe not much power gains but it feels like the fuel is there when you need it just hit it and it goes when i strart my car in the morning and let it warm up properly then i feeel the same way but if you take off cold in the morning or night it just seems to be normal driving and when the car reaches temuratutres after driving for a long distance the car feels the same as ussual just for short periods of time and boy can you feel that difference when it is there and when it is not <br>Dave<br> <p></p><i></i>


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