Polo Gti camshafts

Chat about your MKV (6N2) Polo GTi
Nelson_Wilbury
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Post by Nelson_Wilbury »

Harald and Steve at Scotts are great chaps, I'm sure they'll be more than happy to help you out. Mention your a member of uk-polos.net and you'll immedeately get a 10% discount.
Scotts Mototune is in Dover and they need to car for no more than three hours to complete the work. The information on the chip is downloaded direct from SKN in Germany so you only need about 3 days notice! 8)

This is from memory, I had this all explained to me but I was still too amazed by the results to listen but what the process actually involves is sending the ECU model number to SKN in Germany. Then they wait two hours, in those two hours someone at SKN Germany is modifying the software signals of that particular ECU type. Then is is sent back through IDSN (?) cable back to Scotts motor tune. These new improved signals are copied onto a new chip and soildered back into the ECU. So as you can see this is not just '1 code fits all' like some companies, the 9n FSi ECU has four codes and SKN has different settings for all of them, thats how on the ball they are!

"For many years the name of SKN has been synonymous with the highest quality in electronic engine management developments. Unlike many other software suppliers in the market, SKN aimed from the beginning for sensible and TUV approved chip tuning and they have justifiably succeeded. For example, SKN have won the confidence of the German Interior Ministry and have
been tuning several special assignment vehicles for the Police Force.

SKN chip tuning programmes are TUV approved. That means they have been rigorously tested and comply with strict emission and safety requirements."

Best person to speak to is Harald, his email is [email protected] . He'll tell you everything you need to know :)
gargoil
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Post by gargoil »

Cheers for the info mate, think I will be preparing myself for a 10 hour drive to dover as it's the only place in the UK I've heard that can 'chip' the ecu! Have emailed them!

Any ideas if it can work ok with other mods, I have a BMC, decat Powerflow and cylinder head P+P?

Cheers!
poussou
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Post by poussou »

Well i've looked into their site and they claim a 15 HP !!!! gain with just the ECU rechipping... :shock: :shock: .Thats a bit extreme for just a new ignition map :roll: :roll: But hey, if they can do it, they are welcome to try...
gargoil
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Post by gargoil »

Yep contacted them and I can remove the ecu and post it to them and they can do the work saves me driving 11 hours, I previously had a n/a focus chipped and got 16Bhp extra out of it!
poussou
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Post by poussou »

Yeaaaah!!!I got the new cams!!!Really good looking too!!The intake cam is 256 with a special construction due to the VVT and the exhaust 244, pretty much stock design since its used also in the 1.4 16V engine.I can now see the "Swing Boost effect" which has to do with the way the lobes are designed.I'm pretty comfident these WILL ROCK!!!.I'm gonna install them on Monday and i'll let u guys know what i think!!Real high quality cams :twisted: :twisted:

P.S. One weird thing is that the exhaust cam is slightly longer that the intake one :roll: :roll: .I wonder why...
gargoil
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Post by gargoil »

Did you get the adjustable pulleys with them or are you just gonna use the existing one? Are you gonna get the car rolling roaded once they are fitted?
Nelson_Wilbury
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Post by Nelson_Wilbury »

Gargoil I can gaurantee you'll be more than pleased with an SKN chip. I've just added a K&N panel filter with my chip and you wouldn't believe the difference it made :D
poussou
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Post by poussou »

Well i asked my VW dealer and he advised me that adjustable pulleys are not needed since the intake cam is variable and there is a camshaft position sensor.The cams are timed already from the factory, and all u have to do is to set them at TDC and the rest comes from the cam profile.
I wish i could dyno the car now also but its gonna cost me 150 Euro's to do that, so i guess i'll do it afterwards nad try to deduct from that...
I'm really optimistic though.So far the most power gain i've seen from freeing the intake, and since i already feel that car has too much fuel from the chip, i guess that should bring things to an even state.If not, there is always the new FRP...

I'll try and take some pics with my webcam, but don;t really know how they're gonna look.So stay tunned!! (and thats not a joke.. :lol: :lol: )
gargoil
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Post by gargoil »

Did you get your new cams on mate? Whats the result like?
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Josh_PoloGTi
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Post by Josh_PoloGTi »

Poussou...

Is there any chance you can take a photo of your CAI, Air-Box Modification and also give some more info on the Hyperground kit?

I am VERY interested in doing all of these mods to my car but I need to see where you've made the hole for the CAI, and also which bit of the air box I need to get rid of.

Regarding the Hyperground Kit, I need to know where you have attached these wires? I assume somewhere on the cylinder head? If you could make a diagram, I would be very greatful!

8)
Last edited by Josh_PoloGTi on Tue Oct 19, 2004 7:21 am, edited 1 time in total.
poussou
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Post by poussou »

Well hallo everyone.Sorry for posting so late but i just had my cams fitted :D :D :D .The difference is AMAZING!!Didn't expect that from 256/244 cams :shock: .Mainly the power in the top end got quite stronger and although 1st and 2nd seem the same, 3rd 4th and 5th have a huge power gain from 4000 rpm to the limit!!!After i fitted the cams i realized the ECU was giving way too much fuel to the engine, choking it althrough the power band.With the new cams the car felt really stronger, making me realized the A/F ratio was just about right.Then, i decided to up the fuel some more (while waiting for my CDA to arrive) with a new FPR.The car imediatelly seemed choked (much like before the cams) with the top RPM feeling kinda dead :roll: :roll: .But then i put in my new 70-150 CDA (for engines over 1600cc) and it was hell :shock: :shock: OMFG, i couldn't believe the power in this engine!!Reving all the way to the limit without ANY hesitation.A preliminary top speed test gave me 221 km/h on the digital tachometer!!!Really nice tune i say!!!I'm gonna do a few more tests and let u guys know

To Josh_PoloGTi
Well i dont have a digital camera, but i will try to explain.For the CAI u must make a small hole (thats the only size u can :x ) to the front arch of the car,behind the grill, to the opposite side of the Gti badge.This when viewed from the engine side is a small indentation to the arch, right behind the aircondition aluminium tubing.U just cut through the 2 layers that make up the arch, and connect the opening to the airbox tubing.Thats all.Really good mod (but u do have to do some "destructive" work..)
As for the Hyperground kit, i'll try and make a guide and post it sometime later.
bmk
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Post by bmk »

gargoil wrote:Cool...let us know how they are! Where did you get the car chipped, as I haven't really looked into this as the Lupo GTi chip is encased in glue, I assumed the Polo GTi one would be as well!
I haven't heard of a Lupo GTi engine being rolling roaded at standard below 130Bhp, I'd assume the same with the Polo, I have seen cars loose a few Bhp with K&N's and other "open" filters compared to the standard filter! There have been people have over 140 with just the BMC and de-cat system, on the Loop so you should be able to get the same with the Polo!
The head porting/polishing has made a hell of a difference between 70 and 100, I was very sceptical before I had it done as I know gas flow in modern engines is all designed by computers and any venturii effect designed in the system can be nullified by having the head modified but it seems to have worked well! Do you have a contact email/telephone no. that I could speak to at Dr Schrick? AAT I think may also have an LSD for the Polo if u r having traction problems but expect to pay $$$$!
Don't think the turbo is a good idea either, not least for the cost!

just wanted to mention....i have 140.8 HP in my polo with a BMC air filter in the original box + 2" stainless steel system from cat. and back....!! i was measured at 129.4 before the mod and it gave a 11.4(8.8%) increase... :shock:
poussou
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Post by poussou »

wOOt???
Nah...Imagine where that would take me.... :shock:
Don't really think so.... :roll: :roll:
gargoil
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Post by gargoil »

Mine rr'd at 132Bhp and that was at about 15 degrees ambient temp, vw must underquote there bhp. Didn't get it tested with the filter and exhaust but i'd be disappointed if it didn't add at least 10Bhp.Thats what most people are getting with the bmc and a decent exhaust!
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