GolfGTIforum.co.uk
Model specific boards => Golf mk2 => Topic started by: devilscaff on 04 October 2012, 20:51
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Hi all,just had my 16v mot'd and it passed with much relief.The co was only 0.18% and the hc was only 214 which for an old car I was surprised but was told this was because it was running lean and was advised to get it tuned.To cut a long story short,does anybody know of any good people in the north essex or south sufolk area?
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you need to find and old skool tuner as most mechanics these days are just fitters, you can alter the mixture if you can use the exhaust gas anylyser at the mot station (or elsewhere) there is a small screw between the elbow on the airbox and the metering head, if you look from above it you will either see the tiny rubber bung that should be there but usually isn't or a little 6mm hole, in that hole is an allen key/torx key (can't remember which) screw that you turn to adjust the mixture, that's pretty much all they would do on a tuneup, or you could go for a rolling road tune, but ask them if they know how to alter the mixture first just incase you pay for the tuneup but they don't really do much to the car
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Look in the yellow pages, or whatever you kids use these days, and look for mobile diagnostic tuning. Make sure he's an old guy, and ask on the phone if he's done Mk2 Golf's before.
Simple.
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just do it yourself using the guide for setting up 16v's in the tech section
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T and M auto electrical on whitehall industrial estate. The only place to take your golf. You should know this already. Rolling road tuning, very reasonable prices. Dyno printout to prove performance increase
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Cheers mk2bal, I've heard from one other sauce they were only good with carburettors but if you know different could you let's us know. By the way are you local to Colchester?
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usually if they can set up a carb they will be able to do the K-Jet system, it's all old skool stuff and takes a good (old) mechanic to do it right
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co should be 2% on those but to get best power most go for around 6%.
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6%?!?! never heard of anyone running a 16v that rich. where you getting that info from?
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Wouldn't 6% make it an mot failure?
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It would. But when people tuning them for best response. It's usually rich. Global timing is also adjusted. This base setting can usually be between 6-10 deg. Depending on engine.
3.5CO% is the limit on mk2 for MOT.
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again where are you getting all this from? and are you certain its for K-jet cars?
kjet 16v's run lean at higher rpm's, if increasing the mixture is an attempt to get round this then its a cheap way to do it
global base timing is set by increasing it until it pinks then backing of slightly. 16v is 8degrees as standard depending on the quality/ron of the fuel used you have window either side so that would explain your 6-10degree
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Again! Why question it?
Yes for kjet! And timing is 6 deg standard :wink: take a look at the map below. 8 degrees will probably shift timing for better performance. They run up top end and WUR mod is a crude way to compensate for this. The info comes from someone who regularly tests the EA827 16v engine on a dyno in many configurations and I trust their judgement. I'm not suggesting anything other than running on +97RON fuel. I have seen written that people have used 10 deg. Unsure what spec of engine.
(http://i84.photobucket.com/albums/k36/cerips/Scirocco%20Storm%2016v/16vignitiontiming.jpg)
I'm not interested particularly in kjet. It does the job but a standalone system beats it by far.
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the reason im questioning it because i have never heard tell of anyone running 6.0% on kjet, nor have i seen any information to back this up. i assume you are quoting Toyotec of the main clubgti.com site?
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I seem to recall the figure being that high, I may have misquoted. I can't seem to find where it was mentioned. This is due to adjusting for "feel" rather than figures.
Emissions are not always a concern with friendly MOT places.
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1st step of K jet tuneing
make sure the injectors actualy atomise the fuel.
2nd step equlise the flow of injectors, amazing how far out some of them are
3rd step make sure the WUR actualy works and do basic sytem setup
some people rediscover 20+ BHP there
as for running it very rich, if you can get more spark advance on by doing it and it pulls harder for it do it ( if your no fussed about economy )
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Yep and that! In search of more power you don't tend to think of how much economy you'll get.