Boc/Cupra factory exhaust

[ibizaracebrake]

there are several problems with the factory exhaust - weight, sound, and restricted flow.
the front box is double skinned and straight through, and does a fair amount of silencing.
the rear box is heavily baffled, and goes from 1 pipe entry to 2 pipe exit. this adds weight.
the front exit from the down pipe through the last cat and sensor is followed by a short section of renforced flexipipe with a restricted entry and exit. to view this you need to drop the undertray.
a budget performance exhaust option would be a new, light, straight through rear box with a single exit.
i went for the full custom race option - new large diameter flexipipe into fat pipe straight to
the 1 rear small, round section, straight through box, with a single round exit. all red rubber exhaust hangers are renforced with zip ties and pegs fitted with stops to prevent sideways slip through top of the hangers. i can now hear the ECU cutting the ignition between gear changes, and , when cold, a few pops and bangs.........lovely! the scream at 7,000rpm is serious ear candy. its also nearly half the weight of the factory system.

 

[EdHorny]

You really do play with your cars don't you. Today was the first time I managed to look under my Boc, I jacked it up to do paint the rear brake callipers. I had a good luck underneath, took a good look at the exhaust to see how it ran.

Have you got a single tube coming out the rear and have you flared it out to fill the exhaust trim at the rear, or have you replaced the 2 pipe exit to just 1 big one. Also, pics would be nice, if it's not too much trouble. Sounds good though.

ED

 

[mardon]

Sounds good! Weight is more of an issue than sound for me. I love the sound as standard. The only thing I would like to improve sound wise is to be able to hear the super charger better.

 

[ibizaracebrake]

You really do play with your cars don't you. Today was the first time I managed to look under my Boc, I jacked it up to do paint the rear brake callipers. I had a good luck underneath, took a good look at the exhaust to see how it ran.

Have you got a single tube coming out the rear and have you flared it out to fill the exhaust trim at the rear, or have you replaced the 2 pipe exit to just 1 big one. Also, pics would be nice, if it's not too much trouble. Sounds good though.

ED

video has been on Youtube for a while now, 1 of sound and one of it up on ramps being built. can't rev harder in 'park' as rev limiter cuts in early, like Merc 55SL I drove once.

 

[EdHorny]

Oh. I saw those vis, thought you'd just done as you've just started a thread.

ED

 

[techie]

I was quite impressed how much more audible the standard exhaust was when the rear seats were folded down and the parcel shelf out when I was collecting my new rims.

Sounded much better..lol

 

[dan_wilson87]

i have been in touch with exhaustuk and they will do a custom rear section including silencer for 140 squids, not bad i thought

 

[Dave 77]

There should be a Milltek one coming out in the next few mouths, so im lead to beleave

 

[EdHorny]

Yeah, I'm waiting to see what Milltek have to offer, got other things to do first though. Full credit though, some people have gone out and found new things and customised their cars.

ED