My 1.4 twincharger diy mods

Here are pics of the mods I have come up with, enjoy and apply to your Cupras!

My supercharger cover removal mod


Breather modification to reduce oil consumption
- NOTE: I have removed the factory breather checkvalve block as most of them break and leak boost. Route the connections directly as per my diagram - at your own risk of course. I have been driving around like this for a year and a half.


Intercooler sealing gaps to reduce intake temperatures to within 6'c of outside.


Race battery mod - buy a harley davidson battery which is made by Deka. 8kg! starts with 700+ CCA


Water spray running off the rear wipers outlet on the factory windscreen washer pump.


PEW PEW mod

I also have scanned the Factory 1.4 Twincharger Engine manuals that the mechanics use. If you want a copy PM me your email.


*Disclaimer: nothing I say should be relied upon // Click the links for pictures
Dynolicious 6.89 to 100kph 0.8g max 143kw// KW V1 Coilovers// Custom Intake// Deleted Muffler// Deka ETX18L battery 8.2kg 720CCA// Weight Reduction ~50kg

I am uploading the TSI 1.4 Manuals now. Will post links when they are up.

http://www.users.on.net/~polarbear/POLARS TSI 1.4 MANUAL A.pdf
http://www.users.on.net/~polarbear/POLARS TSI 1.4 MANUAL B.pdf

If anyone can put these manuals up somewhere so that I can stop hosting them that would be awesome.

Well, if you keep in mind that my Golf is 188kg heavier than your Cupra stock v stock my time is pretty good for a car with no ECU tune.

lucifer666 said:

what were you running standard 160bhp? have you got an induction kit/exahust/intercooler

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I made my own carbon airbox around a pod filter. Just wrap the sheet of carbon around pod tight and rivit it into a tube, then put a 3 inch adaptor onto a circular object that fits the other end and voila, carbon pod filter.
I modified a brake duct to fit where the FORGE style intakes mount at the front to get Ram air.
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Intercooler is stock but with my aluminium sheet sealing all the edges and forcing air to go through the cooler like a tunnel, I average 5-7'c max variance between my ECU's intake temp output and the outside air temp.

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GrDuDe_Cupra said:

I bet it is not even 5% as effective as a new intercooler. believe it or not there are no 50p mods that will net you any gains.

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Your right, its not 5% as effective but about 50% as good as a new intercooler (NB the Cupra cooler is not a full radiator sized one like the golf so Idea won't work quite as well.. but will still reduce your water temp a lot).

My shroud keeps my intake temps within 5-7'c of the ambient air temp even when driven hard. This is almost as good as Forge etc. My car will heatsoak slightly but the temp will drop back down very quickly as soon as I am rolling for 20 seconds. My radiator no longer sits on 88'c but barely makes it over 85 due to the shroud.

I have had other people do my mod and run Vag Com logs and see the temperature drop.
If you have not tried it don't post some BS that it does not work. DO IT , then complain to me if it does not work!

Have you seen any Formula 1 cars radiators. There is no gap around the edge of the radiator so that air can avoid going through it.