Cupra 290 '66' Decat videos/opinions
- Thread starter FINCH
- Start date
I wouldn’t ever remove the cat, because besides from doing so is illegal, ethically, I don’t really get the point of making the car more polluting when there will be hardly any benefit to the driver.
“Under the Road Vehicles (Construction and Use) Regulations (Regulations 61(7) and 61A(3)) and the Road Traffic Act 1988 (Section 42) it is an offence to use on a road a vehicle which has been modified in such a way that it no longer complies with the air pollutant emissions standards it was designed to meet.”
If you’re after more noise, just remove the resonator(s), or get a different back box.
“Under the Road Vehicles (Construction and Use) Regulations (Regulations 61(7) and 61A(3)) and the Road Traffic Act 1988 (Section 42) it is an offence to use on a road a vehicle which has been modified in such a way that it no longer complies with the air pollutant emissions standards it was designed to meet.”
If you’re after more noise, just remove the resonator(s), or get a different back box.
Thank you for the lesson and for patronising me. I understand the law. If this is the case I don’t understand why so many companies would sell decaf pipes to use them for “race use”. I intend on using the car for track use 
Maybe I should repeat the question.
Does anyone have a Leon 5F Cupra track car with a decat and a standard cat back
Maybe I should repeat the question.
Does anyone have a Leon 5F Cupra track car with a decat and a standard cat back
Hardly any benefit to the driver? The less restrictive the more power you can extract that's the benefit. I ran 200 cel sports cats on my Leon's instead of the 800 cel stock downpipes.
Majority of the noise is also gained by downpipe.
I meant in terms of performance. Modern cats are pretty free-flowing. If I were looking to extract that last bit of performance I would too get a sport cat instead of removing it completely, then it's still road legal.
I’ll take your word for it, I’ve read that modern turbo cars have pretty free flowing cats because the back pressure harms efficiency, which is important to them. I stand corrected.
Thanks for the replies guys.
I basically wanted to know what it would sound like. With everything else in place stage 2 remap etc as all you can find on YouTube is decats/sports cats with full systems. My friend has a M135i, first did silencer Delete and decat. Put the silencer back on with the decat and sounded great. This is reason behind my question.
I basically wanted to know what it would sound like. With everything else in place stage 2 remap etc as all you can find on YouTube is decats/sports cats with full systems. My friend has a M135i, first did silencer Delete and decat. Put the silencer back on with the decat and sounded great. This is reason behind my question.
Rules will always be broken when it comes to modifying cars and getting more power, that's part of the fun, not that I condone breaking the law but we don't need to be quoted it when someone says something, we are all adults and know right from wrong
Cats and DPF will always be restrictive due to construction of them, a DPF can lose 20 to 30 BHP, with EURO 6 and the newest EURO 7 the latter is really strangling performance.
Finch if you remove the Cat then as motty225 said itll need a map and noise etc is personal preference
Cats and DPF will always be restrictive due to construction of them, a DPF can lose 20 to 30 BHP, with EURO 6 and the newest EURO 7 the latter is really strangling performance.
Finch if you remove the Cat then as motty225 said itll need a map and noise etc is personal preference
I do not have a video but catless 3 inch down pipe w all stock cat back made great sound. That is how I was riding on stage 2.
Then with res delete it was great too.
Res del gave lots of external sound
Below 2 vids I have, one with scorpion turboback, the other with res del + 3 inch dp
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Indeed. I wrote already multiple times that res del for 100 pounds i good enough if you compare the sound experience with 800 pounds scorpion.was also good enough up to 420hp on my stage 2.
I went stage 3 and had to make it 3 inch end to end hence took the scorpion.
Now it sounds insane really. I am am crazy happy about it and scorpion is one of my best mod on this car.
I think magic comes from missing back box.
Cobra does not sound half that good.
I was looking at the Scorpion cat back because I done the Res Delete and it wasn't great, with having the Cupra ST the boxes are at the tailpipes which I didn't realise at the time, when I bought the car I just bought the delete pipe so it was here when I got the car, that will teach me to jump straight in, how insane is the Scorpion?
I get thumbs from everyone below 20 when I fly by
This is how cool it is
I have ignition cut out programmed when it looses traction, I have pops and bangs so when you warm it up it really gets crazy.
Build quality is awesome. I have it now for 10k km and there are no tear marks from the salt or anything
A+ quality. Welds are also perfectly laid.
Note mine is reasonated so the quieter version, I have a pipe to remove scorpion resonatedlr but my neighbours already do not like me so I think I will skip it.
This is how cool it is
I have ignition cut out programmed when it looses traction, I have pops and bangs so when you warm it up it really gets crazy.
Build quality is awesome. I have it now for 10k km and there are no tear marks from the salt or anything
A+ quality. Welds are also perfectly laid.
Note mine is reasonated so the quieter version, I have a pipe to remove scorpion resonatedlr but my neighbours already do not like me so I think I will skip it.
I took resonated because with res del and stock back box car was droning at highway speeds and I was afraid of that.
After roughly 1k km it got it target sound.
There is zero drone also. I like it loud but for me now is enough. Already people notice how loud it is....
Worst case you can install the straight pipe where resonator is in case you find it too civilized
Yep, second one is 3inhch decat dp and middle res delete. So only backbox remained
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