GR Yaris HJS Downpipe with ECE-approval

Looks like a great performance alternative. Euro6d-temp probably not...
 
Not modular like the HJS but then I feel that's a good thing as you're not doing down to that really small exit diameter
 
HJS is great if you want fully legal and health preserving performance. This looks like great performance and still very clean if keeping the OPF, but I understand that isn't the intention from that 3" exit...
 
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007 CARL said:
It only has tobe 300 cpsi to past euro 6 emissions standards but definitely looks a better option than the hjs
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It's good to have a proper performance DP with a proper cat, however it being theoretical Euro6 is not legally relevant as it has to be Euro6d-temp compliant AND certified to be compliant
 
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Onehp said:
It's good to have a proper performance DP with a proper cat, however it being theoretical Euro6 is not legally relevant as it has to be Euro6d-temp compliant AND certified to be compliant
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Time will tell
 
Dyno from an otherwise stock car. (BMC panel filter, HJS downpipes). Notice there is no additional power (Peek power before =276hp on the same dyno) until ~4500rpm
2PNX4Qg.png
 
Thanks for sharing.

Two very close graphs, so might actually show real difference. No longer dropping a lot in power past 6k rpm.
What are the subjective impressions?
 
CommitConfirm said:
maybe a little easier to rev but otherwise F'all.
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Yeah, my plan is to spice it what a little extra boost up top so I stop shortshifting at 6k but rather let it rev out to 7k. It's a nice near square engine, bit shame to not rev it out...
 
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