MK5 Golf GTI
All Things Mk5 => Modifications & Technical Area => Performance Modifications => Topic started by: Tfsi_Mike on June 04, 2011, 09:31:41 pm
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Anyone have this on he 2.0 Tfsi? Wondering if anyone has felt any benefit from
Fitting? Having cambelt done soon, would be ideal time to do another mod :p
Thanks
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I have it, no difference felt :smiley:
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Thanks mate :happy2:
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:happy2: anyone saying different has a better "feel" than me :laugh:
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Did you sort the niggling problems with the outlet pipe & document increases??
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I don't have the Neuspeed one, but I just received the Agency Power pulley and I'm putting it on
next week. I'll get back here and post whether or not I can tell if there's a difference. I'm guessing it'll be tough feeling more power,
but maybe throttle response improvement. My concern has been whether or not the oem pulley is a balancer, and what effects the cnc
pulley would have on the internals over time...do you know?
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Did you sort the niggling problems with the outlet pipe & document increases??
Hi Mike,
As for now i only have their turbo outlet fitted and a standard discharge pipe which has a silicone hose to fit the turbo outlet, so no it hasn't been sorted yet :sad1:
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The power pulley will have no effect on how quick the crank spins or give you any better throttle response. It just sits on the end of the crankshaft and spins round plus the OE pulley does not really weigh that much. I found that out when I was fitting my cambelt a few months ago. You would be better investing money into other parts of the car which will reap benefits. If you want to increase throttle response you would be wiser to buy some aftermarket hoses such as SFS or BSH/Neuspeed throttle pipes etc.
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So, you are saying that the combustion that drives the crank will not spin the crank any faster if the pulley is two lbs lighter?
If lighter rods and pistons were to be installed then the same would be true as well?
Granted a couple of lbs will be hard to notice, but still, there has to be some difference in the magnitude the engine must work with lighter internals including a pulley that must be spun by the crank. I will be putting in rods and pistons some day and, along with the pulley, there will be noticeable power output. I have to believe this as I am going to school taking engineering at this time.
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I see your point, however the pulley spins round on its axis and does not require any more energy to spin it than it would one 2lbs lighter. When you take into account the forces and energy these engines produce, then 2lbs spinning on the end is nothing and you wont feel or notice any difference. However the difference in weight is more like 1lb between the two and is negligible. To get the crank to spin faster then you have to lighten the crank as that is much larger than a pulley and has a much larger rotational mass. The crank does not just spin like a straight bar would i.e a drive shaft. It has journals which are offset to coincide with the combustion process and counter weights to balance, else it would just cause a lot of vibration! You wont see any increase in power from the pulley and Im sure dyno a would show that.
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Getting the AP pulley put on on Wednesday, and I will post any awareness of difference. I don't expect to notice much, except for maybe some quicker throttle response as some feel this and some do not. As for a dyno showing more power, imo it's not worth putting it on the dyno because I do not expect much more power, which will vary after a number of runs anyhow. I do not believe that a pulley should be one of anyone's 1st round of mods, but may be a decent mod for when you're running out of things to change out. Let you all know how it goes...
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Will end up doing it like you say when Im out of things to do, as an 'every little helps mod' :happy2:
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I think some of the dudes across the pond have tried this mod and IIRC weren't impressed. I've even read of resulting problems but can't remember the detail. Neuspeed products are often not what they're cracked up to be - I'm not very impressed with my Nospeed turbo discharge/charge pipes even with SAMCO hoses. Very expensive for very minor returns. IMO.
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I think that there are so many mods out there that make just a slight bit of difference if any. Maybe after all of them put together collectively may give "some" power.
The turbo discharge pipe, intake, throttle inlet pipe, intercooler tubes, throttle body tube, and lightweight pulley are some of the parts that singly may give nothing noticeable. But, may all together remove restrictions, reduce weight, and, I'll say it, look better.
Being realistic when considering mods, we know there are only certain things which give noticeable gains; bigger turbo, remap, internals, and file-supporting or required mods(intake, fueling, tbe, and fmic).
Please don't fault me for the items listed being completely accurate or not. I'm only making the point that there are "power mods" and there are "other mods".
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Please don't fault me for the items listed being completely accurate or not. I'm only making the point that there are "power mods" and there are "other mods".
....I think you're right :happy2: - It's the whole package which matters most.
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Please don't fault me for the items listed being completely accurate or not. I'm only making the point that there are "power mods" and there are "other mods".
....I think you're right :happy2: - It's the whole package which matters most.
Knowing you RR, is this what you mean by the whole package matters most????
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi715.photobucket.com%2Falbums%2Fww160%2Fjakethemoss%2Fbreasts.jpg&hash=07092f76a6ea670c599ce40ae52e2b3cf916ab4d)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi715.photobucket.com%2Falbums%2Fww160%2Fjakethemoss%2Fbottom.jpg&hash=f17e261aaf98caef8ada187b91a108a28cf8bc2a)
:confused:
:evilgrin: :evilgrin: :evilgrin: :grin: :grin: :grin:
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I have the AP pulley on now, so do I feel more power? No.
However there is something noticeable. When I'm lightly going back on the throttle, there is quicker rev response. I can definitely tell after letting off the throttle a bit and I go back on it, the response is immediate with the lightest touch on the pedal. Does this benefit me?
Hell, I don't know to be honest.
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That ^^ makes sense as there is less inertia required to rotate the pulley.
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Please don't fault me for the items listed being completely accurate or not. I'm only making the point that there are "power mods" and there are "other mods".
....I think you're right :happy2: - It's the whole package which matters most.
Knowing you RR, is this what you mean by the whole package matters most????
....Eek!! Wow Jake! For once I wasn't thinking along those lines :happy2:
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Please don't fault me for the items listed being completely accurate or not. I'm only making the point that there are "power mods" and there are "other mods".
....I think you're right :happy2: - It's the whole package which matters most.
Knowing you RR, is this what you mean by the whole package matters most????
....Eek!! Wow Jake! For once I wasn't thinking along those lines :happy2:
Eek? they are dressed aren't they? :wink:
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In theory the Neuspeed power pulley kit could give you the extra 5-7 bhp they claim. I believe this not because of the lightened pulley but because it's an under drive kit. Correct me if I'm wrong but that's why they give you a shorter belt, because the pulley is smaller and in turn geared down.
Not sure if this is mentioned in their literature ..
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I don't know if this helps or not, but they (neuspeed and ECS) told me that under-drive pulleys do not spin the alternator and ac as much as the oem size pulley does and therefore may or may not cause problems with those systems driven by the accessory belt. This is the reason why I went with the AP pulley. It's oem sized and still 2 lbs lighter.
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I don't know if this helps or not, but they (neuspeed and ECS) told me that under-drive pulleys do not spin the alternator and ac as much as the oem size pulley does and therefore may or may not cause problems with those systems driven by the accessory belt. This is the reason why I went with the AP pulley. It's oem sized and still 2 lbs lighter.
hi, so have there been problems in the states with the neuspeed one like robin has alluded to or is it just a case of the smaller pulley not spinning the alternator as much which could affect say a top end stereo installation :confused:
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I have had the neuspeed pulley on the car for 4 years now i haven't had any adverse sideeffects, but then again it hasn't had any mindblowing, worldchanging positive effects :wink:
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I have had the neuspeed pulley on the car for 4 years now i haven't had any adverse sideeffects, but then again it hasn't had any mindblowing, worldchanging positive effects :wink:
hi jake, did you do any before and after logs? did you notice throttle was a bit "more free revving"?
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I have had the neuspeed pulley on the car for 4 years now i haven't had any adverse sideeffects, but then again it hasn't had any mindblowing, worldchanging positive effects :wink:
hi jake, did you do any before and after logs? did you notice throttle was a bit "more free revving"?
Nope :wink:
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taken the plunge and got one of these so will report back after fitting
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taken the plunge and got one of these so will report back after fitting
Andy you got more money than sense... :wink: