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Please don't take offence, and if you have one, that's your choice. The FACT is that more than 7 people have complained of boost & power drops after installing the FORGE intercooler. We have a couple of hundred Polo customers, so after results at a QLD dyno day in 2009, we (with the help of a customer that experienced boost & power drops) had the intercoolers tested on a dyno, data logged & Flow Bench tested.
In all seriousness, the intercooler manufacturer who owns the flow bench we used for testing honestly thought the FORGE unit was a joke, and stated categorically, that you would be better off with a stock intercooler & heat soak than having such a flow restriction in the system.
We forwarded this information to Plautos as he had a similar problem, so we have seen it on K03, K04 & GT turbo Polo's, so it's not an isolated one off.
I really don't care what you bolt on to your own car, but I challenge you to have a stock intercooler tested side by side with the FORGE unit & ask a professional opinion (an intercooler fabricator), based on the flow results, on what they would rather bolt on a vehicle. That is simply what we did.
If you think this is "competitor slanging", you are incorrect, this simply is a product that we firmly believe (and have the data to back it up) that you are better off not having it on your car.
Can you please supply data that shows otherwise. Certainly I know one owner who asked Forge about their testing data & design criteria, and at last contact, there was no response.
Note, we have never tested any other Polo specific intercoolers, not the Seat diesel one, or custom ones, so I have no data or seen any evidence on how they work.
Originally Posted by Guy_H
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