AUDI TT COP upgrade

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mohmedhat
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AUDI TT COP upgrade

Post by mohmedhat »

when i upgraded my standard Coil with 4 COP from AUDI 06B905115

ImageImage

connected it to the stock ECU it worked fine not only fine extremely fine for me until the rpm reach 2500 ~ 3000 it started hassling and rpm go high low rapidly, is their is something wrong with dwell timing between stock ECU and these coils i know its Dwell: 2.6 ms & Cranking dwell: 3.0 ms but don't know how much it's for the stock ECU
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mohmedhat
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Re: AUDI TT COP upgrade

Post by mohmedhat »

Solved and worked very good for me i will test drive it

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Rodd1s
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Re: AUDI TT COP upgrade

Post by Rodd1s »

This is a pretty hardcore swap from the usual coilpack setup - but, what's the purpose? Surely it'll just be more expensive when it goes wrong (I say 'when' because I've seen many of those VAG coils die for no reason) because each one of those coils is about the same price as a stock coilpack with ignition leads.
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exist3nce
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Re: AUDI TT COP upgrade

Post by exist3nce »

Interesting upgrade... I'm surprised the stock ECU was able to drive them!

What was the fix to solve the cutting out issue?
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mohmedhat
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Re: AUDI TT COP upgrade

Post by mohmedhat »

nothing more than firm grounding to cylinder head, they are very reliable and used in tuning up to 600HP, they eliminate carbon wires problems and decrease waste in spark power. more over they output voltage is higher than our GM coil
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Rodd1s
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Re: AUDI TT COP upgrade

Post by Rodd1s »

mohmedhat wrote:nothing more than firm grounding to cylinder head, they are very reliable and used in tuning up to 600HP, they eliminate carbon wires problems and decrease waste in spark power. more over they output voltage is higher than our GM coil
Makes sense. Are you looking to do some high power tuning as well?

Just had a thought, with the increase in spark power, would it make sense to increase the spark plug gap for a "bigger" spark, thus "better" spark? And maybe better combustion, which should give power and efficiency before adding more fuel and air.
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mohmedhat
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Re: AUDI TT COP upgrade

Post by mohmedhat »

thanks for your suggestion, could you suggest me a gab? 1.1mm is ok?
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Rodd1s
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Re: AUDI TT COP upgrade

Post by Rodd1s »

Good question.

Can't remember what the gap is on recommended plugs, so start with that and use feeler gauges or something to go up in steps of 0.1mm until the plug won't fire anymore.

e.g.: if the standard gap is 0.9mm, open it to 1.0mm, test it out, then 1.1mm, repeat. 1.2mm... 1.3mm... until there is no longer a visible spark.
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