If you don't have any boost leak try unplugging completely N75, have a short run (one only!) and see what pressure you get on your boost gauge/Vag-com. Should be around 2600 mbar or more for a second. If it's not than it may be something wrong with your turbo, for example WG actuator stuck in...
Guys, when you have a custom remap it doestn't matter which N75 vavle you have. The tuner can set the boost pressure at the level you want it to be - let's say 1.5 or 1.7bar. N75 valve is just a means to make it happen.
Already fitted.. Seems like there is some improvement. However the cracking noise is still there but smaller, mainly when shifting from 2 to 3. I suspect it may be one of the front engine mounts.
Not a big deal to change this rear mount, maybe in your case it will solve the problem completely...
Yes, you're right. But consider the fact that normally you have the car's ECU controlling the boost pressure through wastegate - protecting turbocharger against overspinning.
I have a complete 2,5" custom exhast with a decat and and a 3" downpipe in my S3 and I haven't noticed a significant...
Sorry to warm up an old topic, but just to let you know - over 300HP is possible in a 1.8T VAG engine equipped with KKK K04 turbo.
Here's a graph showing 306HP in the APY engine with a standard KKK K04:
Sorry for the language - it's polish..
P-Norm means power at the flywheel, P-kola is the...
IMO in turbocharged cars the easier the flow of the exhaust gases the better. Check out what it's like in powerful 1/4 mile cars - they often have the exhaust ending just behind the front wheels.
However backpressure is desired in the N/A cars - that's for sure.
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