downpipe question..
downpipe question..
mr2tubbyben
01-09-2018, 09:48 AM #11yeh ok mate, sounds good. how much you want for it? i'll bring the cash incase i do want it.
1990 Eunos Roadster in Mariner DU blue
Cobalt cat back, Decat pipe, 15in Red Rota GT3 alloys, Toyo tyres, Lowered on Coil overs, Red anti roll bars, 14degree timing mod, white dash kit, illuminated side marker lights,
Halo ring headlights, OEM windblocker, Bluetooth streaming HU, Blue leather handbrake and gear lever gaitor, Centre brake/tail light mod, Blue velour door cards, Polished cam cover, Polished front strut bar, 4xheadrest speakers, JDM floor mats, Suede semi dish steering wheel,
added rep for you mate as you are always helping members and cash up front is never an issue with you.
1990 Eunos Roadster in Mariner DU blue
Cobalt cat back, Decat pipe, 15in Red Rota GT3 alloys, Toyo tyres, Lowered on Coil overs, Red anti roll bars, 14degree timing mod, white dash kit, illuminated side marker lights,
Halo ring headlights, OEM windblocker, Bluetooth streaming HU, Blue leather handbrake and gear lever gaitor, Centre brake/tail light mod, Blue velour door cards, Polished cam cover, Polished front strut bar, 4xheadrest speakers, JDM floor mats, Suede semi dish steering wheel,
WRT the downpipe, it's all about smoothing exhaust flow. The stock turbo elbow + cat doesn't flow very well - it's very wide to accommodate a full cat in such a small space and when you gut the cat you're left with a huge step inside where it used to be. However exhaust flow isn't so important on turbo motors as the gasses are all turbulent after they've been past the compressor wheel and forced induction engines don't rely so much on exhaust scavenging/pulsing like N/A engines do. So basically like Mikey said, not much to gain from it
Weight loss is the only thing I can think of?
Remember that rev1-2 hotpipes and rev3+ hotpipes are different! Rev3 has a takeoff for the aircon idle up underneath the recirc valve and the length of the pipe is different (the hose that goes from the hotpipe to the intercooler is a different length as well). There's also something different about the brackets that bolt them to the head I think.
WRT the downpipe, it's all about smoothing exhaust flow. The stock turbo elbow + cat doesn't flow very well - it's very wide to accommodate a full cat in such a small space and when you gut the cat you're left with a huge step inside where it used to be. However exhaust flow isn't so important on turbo motors as the gasses are all turbulent after they've been past the compressor wheel and forced induction engines don't rely so much on exhaust scavenging/pulsing like N/A engines do. So basically like Mikey said, not much to gain from it Weight loss is the only thing I can think of?
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