Interesting.......veeeerrrry interesting

2.7 V6 30v biturbo - 251bhp
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Post by S4TAN » Mon Nov 06, 2006 4:18 pm

Just about to find out Clive :bigwave: gonna take it for a spin......

I've re-set the ecu as well to see if i can spot an immediate difference - this is recommended as the ecu will take about 100 miles to adapt to the increase airflow and/or reduced pressure drop - if i let it adapt over that time i may not notice a difference - and remember: having no vagcom means all my testing is done by FEEL!!!! (also did a TBA - key method)

Will let you know shortly........
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Post by SimonS4MTM » Mon Nov 06, 2006 4:26 pm

Great scientific methods!
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Post by GrahamS4 » Mon Nov 06, 2006 5:06 pm

I think you should invest in a Vag-com cable.
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Post by DavidT » Mon Nov 06, 2006 5:09 pm

GrahamS4 wrote:I think you should invest in a Vag-com cable.
Yes, he should, best thing I ever got.

As our resident reseacher, he would love it :)

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Post by S4TAN » Mon Nov 06, 2006 5:23 pm

Great scientific methods!

Yeah yeah - whatever....I can't exactly magic a vagcom cable out of thin air! But does having no vagcom exclude me from doing things like this? Answer: NO it does not. Sarcasm really is your "thing" isn't it........if you want quantitative "scientific" results STFA - all that kind of info is buried in the subsequent posts and threads in the article that i posted the link for!

Anyway - back to the people with a constructive interest in this:

Clive - just been for a run to my local V-power garage (10 miles away) my totally non-scientific ass tells me the car FEELS stronger, pulls like a train and SEEMS smoother.......that's good enough for me, and it cost me fack all. :smile_smoking:
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Post by SimonS4MTM » Mon Nov 06, 2006 5:32 pm

Hmmmmm

I am not saying there is anything wrong with an ar#e dyno, some times they work well, but with chasing small improvements like you are, you really would benefit from VAGCOM.

As David says, you would love it. You seem like the kind of person that enjoys experimenting in fine tuning these engines and VAGCOM woudl give you a clear indication as to which changes reap the most rewards.
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Post by S4TAN » Mon Nov 06, 2006 5:49 pm

A well measured response - and you're right; i would certainly benefit from a fully functional vagcom cable - i will get round to getting one at some point - but until that point i have to rely on feel alone unfortunately.

It's a cheap mod to say the least so i felt the risk was minimal, and its entirely possible that the gains are minimal too (at a quantitative level) - but i read and understood the science behind performing this modification and it made logical sense to me.

Let's face it - nearly all wisdom comes under the category of "received wisdom", i.e. someone else has been there, seen it and done it before any of us; i read the threads and posts and chased the links - i came to the conclusion that enough empirical evidence had been gathered on this mod to suggest that this was a good thing to do - and the cost/benefit analysis was easy maths!!!
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Post by SimonS4MTM » Mon Nov 06, 2006 5:59 pm

S4TAN wrote:Let's face it - nearly all wisdom comes under the category of "received wisdom", i.e. someone else has been there, seen it and done it before any of us
That's why this forum is so great, there are a hole list of simple mods that can be done that are common place.

Though I stand by the fact that I believe VAGCOM is one of the best mods that you can make to your car, if not just for peace of mind, along with a shortshift! 8)
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Post by Dr-Al » Mon Nov 06, 2006 6:01 pm

S4TAN wrote:Yeah yeah - whatever....I can't exactly magic a vagcom cable out of thin air!
No magic required - just eBay
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Post by S4TAN » Mon Nov 06, 2006 6:05 pm

No magic required - just eBay
Yeah - but that's not a fully "dongled" cable is it Doc??
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Post by S4TAN » Mon Nov 06, 2006 6:13 pm

That's why this forum is so great, there are a hole list of simple mods that can be done that are common place.
Totally agree - that's why i posted this thread in the first place; to disseminate the info for the uninformed and generate debate within the informed... :wink:
Though I stand by the fact that I believe VAGCOM is one of the best mods that you can make to your car, if not just for peace of mind, along with a shortshift!
I have no doubt that you're right Simon - i really should just bite the bullet and buy the damn cable (it's just that as i work in the telecomms sector it really gauls me to pay for a bloody cable!) :lol:
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Post by SimonS4MTM » Mon Nov 06, 2006 6:15 pm

S4TAN wrote:I have no doubt that you're right Simon - i really should just bite the bullet and buy the damn cable (it's just that as i work in the telecomms sector it really gauls me to pay for a bloody cable!) :lol:
Think of it as paying for those clever people at RossTech to write the software, thats were the cost comes from.
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Post by S4TAN » Mon Nov 06, 2006 6:24 pm

Think of it as paying for those clever people at RossTech to write the software, thats were the cost comes from.
Fair point when viewed that way. Still sticks in my throat to pay money for a cable though.....!

Anyway - we've digressed from the topic! If someone out there has vagcom and is willing to "de-mesh" their MAF housing then please do before and after logs and post the results.....(although i'm not sure what blocks you'd log to see if any difference was made)
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Post by Dr-Al » Mon Nov 06, 2006 6:38 pm

S4TAN wrote:
No magic required - just eBay
Yeah - but that's not a fully "dongled" cable is it Doc??
Nope, but it can log FATS times which would be very useful for your tikering. The full version has all the bells and whistles, but the cost is about 10-20 times greater.

PS - any thoughts on your next mod? Replace the air in all 5 tyres with helium and you will knock ~100g off the total weight (assuming tyre is 25L @ 2Atm). You will also benefit from less friction losses from the gas within the tyre as it spins. Not quite as effective as the aircon mod, but every little helps :lol: On the down side, helium is better at finding escape routes, so you would have to top them up every day :(
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Post by S4TAN » Mon Nov 06, 2006 6:48 pm

100g off the total weight (assuming tyre is 25L @ 2Atm).....less friction losses from the gas within the tyre as it spins......helium is better at finding escape routes....
Jeez Doc! You can't even be a sarcastic git without getting a bit of science in can ya??!! :lol:
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