When I did cat less primaries and full exhaust with x pipe on my 300zx my turbos started to smoke like crazy. I ended up upgrading to ball bearing turbos it stopped the smoking 90% but it still smelled. Then I went from a x too a H pipe and that stopped it 100%. I will never go catless again.
Never had that issue with the HFC's and an H-pipe via an HKS Hiper, ran that setup for 20 years with no issue. That car was just bullet proof.
I would not expect you would. I switched to that hks exhaust and loved it. Running hfc would probably be enough to never get any oil issues. I wish I knew that was the cause back then it would have saved me 10000 in turbo upgrades.
Yes I did have that sound!!! And I could never figure out what it was. Sounded like an owlOh, you know you would have spent it on the turbo upgrades anyway
Did you get a "hoot" from that exhaust under partial acceleration? Never heard that from any other car, but I think that the exhaust gasses moving at just the right speed across the H pipe made a hoot like blowing across the top of a bottle, it sounded amazing
I digress, we're off topic, but don't buy DP's without HFC's kids, environmentally, the smell (and associated eye watering) and leaky turbos just aren't worth it. I wish there were more off the shelf HFC options out there.
I was going to say $990 woah but then it's in Aussie roos. I wonder about the weld quality. They claim any gains?
I’m not sure in relation to HP gains but they have been recommended to me by a local dyno tuner as part of a unichip package. I was more concerned if they would create any problems with the turbo seals leakage that was mentioned in this post ?
Honestly you money is probably better spent elsewhere. The gains are minimal at best, oil might not leak but why risk it, if you strip a stud your buying a new turbo (1k US) and they are also a pain to remove. So as far as exhaust work goes it's catback- midpipes-------------------------------------downpipes.
