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Old 07-11-2008, 11:28 AM   #1
5.0 ED
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Default Mod's that don't work.

Thought this could be a good idea for a thread, so people can put down what they'll done that didn't work so others know not to try it.

AU v8 airbox hole at maf is smaller than maf, so i enlarged the whole leaving a nice straight shot for the maf, doing this knocks the maf way out of calibration, making it inconsistantly read higher at some flow points rather than others, causes to car, lost power, poorer idle, excessively rich at 3/4 throttle and very hard to tune cause it was unstable.

Fix replace airbox lid. Run's a lot nicer now!

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Old 07-11-2008, 11:33 AM   #2
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Hahaha lol. Great minds must think alike cause I tried the same thing a month ago. Was utterly shocked at how crap the car ran after that. Definitely not recommended screwing with the MAF lol
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Old 07-11-2008, 11:45 AM   #3
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Oooohhh... CAR mods that dont work... i thought you were refering to FORUM Mod's (Moderators) that dont work... LMAO!
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Old 07-11-2008, 12:07 PM   #4
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doesnt air velocity work better than air volume in this case?
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Old 07-11-2008, 12:37 PM   #5
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What i believe to be the problem is like what your saying, except that the maf needs the air entering in to be relatively straight, i've heard of recommendations of having 6inch's of straight pipe before them and so on, so when ive done that, the air has been entering at more various angles, well thats my theory anyway.
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Old 07-11-2008, 12:44 PM   #6
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Could be right. Either way, altering the air flow has created some issues for you that havent added any benefit. Retuning it to stock was the best option.
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Old 07-11-2008, 04:23 PM   #7
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i bought an AU, and tried to make it go fast :








:






and to be serious, any of those spastic mod chips or electric superchargers dont work. nor do K&N stickers.
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Old 07-11-2008, 04:28 PM   #8
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Quote:
Originally Posted by HLC
i bought an AU, and tried to make it go fast :
Giving it bling, has it's merits
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Old 07-11-2008, 08:21 PM   #9
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Painting it red doesn't work either! Looks good thou.
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Old 07-11-2008, 09:01 PM   #10
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Quote:
Originally Posted by 5.0whiteaughia
Thought this could be a good idea for a thread, so people can put down what they'll done that didn't work so others know not to try it.

AU v8 airbox hole at maf is smaller than maf, so i enlarged the whole leaving a nice straight shot for the maf, doing this knocks the maf way out of calibration, making it inconsistantly read higher at some flow points rather than others, causes to car, lost power, poorer idle, excessively rich at 3/4 throttle and very hard to tune cause it was unstable.

Fix replace airbox lid. Run's a lot nicer now!
Yep, it's hard to muck around with anything to do with the MAF.
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Old 07-11-2008, 10:50 PM   #11
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Old 08-11-2008, 12:02 AM   #12
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^^Hehehe Gold!
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Old 08-11-2008, 01:00 AM   #13
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Hey private9 regarding your air mod, it looks like the pod is sucking in a lot of hot air due to its position right over the exhaust, did this affect the car at all? I went to a tuner previously that reckoned less air was better than hot air, I don't know if he was right though. Is that why you've posted your mod in this thread? Interested to hear your view.
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Old 08-11-2008, 03:38 AM   #14
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Lol good one private9. I can give an example where hot air worked better for intake and that was on my EA turbo, it was sucking from beside the exhaust manifold, when i put on a large 4inch i think intake with pod sticking directly behind drivers side headlight, it lost power and considerably, but that was more to do with the fact that i had an excellent water to air intercooler and any restriction in front of a turbo will make the turbo spin faster to produce the same airflow, much like when you stick you hand over the end of a vacuum cleaner.
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Old 08-11-2008, 08:12 AM   #15
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Quote:
Originally Posted by Rozwell28
Hey private9 regarding your air mod, it looks like the pod is sucking in a lot of hot air due to its position right over the exhaust, did this affect the car at all? I went to a tuner previously that reckoned less air was better than hot air, I don't know if he was right though. Is that why you've posted your mod in this thread? Interested to hear your view.
It's not mine mate, just some random pic I found. I'm not that stupid I hope!
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Old 08-11-2008, 09:02 AM   #16
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Quote:
Originally Posted by Night
Painting it red doesn't work either! Looks good thou.
Rubbish, it worked for me
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Old 08-11-2008, 10:31 AM   #17
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about 3 months after I bought my XR6 I went and got it dynoed it was completely stock and pulled 118rwkw ,the mechanic suggested an aftermarket panel filter would give me upto 4rwkw ,so he whacked one in $100 and gave it another run (freebie) and it pulled 116rwkw : ..lol.
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Old 08-11-2008, 10:45 AM   #18
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I'd imagine you would have to be moving to get the air into it to make a difference...
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Old 08-11-2008, 10:49 AM   #19
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It's a high flow filter. Moving or not air still flows. If it is high flow, MORE air should be flowing.
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Old 08-11-2008, 10:56 AM   #20
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Quote:
Originally Posted by HLC
and to be serious, any of those spastic mod chips or electric superchargers dont work. nor do K&N stickers.
Incorrect! Electric superchargers do work. They aren't brilliant, sure, but they do work. And if your K&N sticker didn't add 20+RWKW then you applied it incorrectly...
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Old 08-11-2008, 10:59 AM   #21
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Oh dam that's whats happened to the power i lost, the K&N sticker has fallen off.
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Old 08-11-2008, 11:12 AM   #22
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Hmm.. stickers you say? Might have to look into it, been searching for a bit more power!
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Old 08-11-2008, 03:32 PM   #23
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Indexing plugs seems to make the six slower..less torque.Iridium plugs make the car fly but a few days later it idles terrible...

extremely hard shift kits slowed my car down too..but Im talking about sideways strength gearshifts.
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Old 08-11-2008, 03:37 PM   #24
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Quote:
Originally Posted by The Mighty Red
about 3 months after I bought my XR6 I went and got it dynoed it was completely stock and pulled 118rwkw ,the mechanic suggested an aftermarket panel filter would give me upto 4rwkw ,so he whacked one in $100 and gave it another run (freebie) and it pulled 116rwkw : ..lol.
My AU Fairmont ran 115kws on its first ever dyno... LOL
No mods other than a cat back exhaust

So many people lost money on that :
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Old 08-11-2008, 03:45 PM   #25
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With that 2 dyno run's it doesn't really mean a lot, first of all the car hadn't had time to adapt learning to it at all, and 2nd that 2 dyno run's back to back can alter 5rwkw's or more, particularilly if you drove the car in dyno'd it, and then put cold air intake in and started it and dyno'd it again, heat soak sets in amongst other things, also the ecu has a startup map that it run's for a little while after starting which depending on engine temp takes a little bit before it turns off. Many dyno tuners will actually do 3 run's back to back each time when fine tuning because of this, that way they get more consistant results if you were to look at the 3rd run each time.
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Old 10-11-2008, 07:09 PM   #26
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I have an AU3 VCT XR6 and six months ago had a VSI LPG system fitted at the same time I installed a new set of iridium plugs which my brother asured me where the best, after two months I had problems starting and rough cold running and misfiring, so I put a normal set of plugs into it and it's been good as gold ever since, don't know if it was the gas or what but the tips of the iridiums had completly vanished? on the upside I reckon I got more HP out of the gas conversion than I did out of a set of extractors dead set this VSI is awesome.
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Old 10-11-2008, 07:39 PM   #27
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Chalk Unichips up on the 'doesnt work' pile.
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Old 10-11-2008, 07:41 PM   #28
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Quote:
Originally Posted by b2tf
Chalk Unichips up on the 'doesnt work' pile.
Rubbish, mine made a great frisbee and a good doorstop.
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Old 10-11-2008, 07:42 PM   #29
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Chalk Unichips up on the 'doesnt work' pile.
I don't doubt it, but why is that? Is it simply along the lines of the factory computer relearns around the "bent" signals?
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Old 10-11-2008, 07:48 PM   #30
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Quote:
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I don't doubt it, but why is that? Is it simply along the lines of the factory computer relearns around the "bent" signals?
pretty well yeah.
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