Jump to content
SAU Community

Hks Hi Power Catbacks

AngryRB
 Share

Recommended Posts

AngryRB Grand Master

AngryRB

Posted
Posted (edited)

Looking to get the best sound out of my RB3025neo without being over the top loud, have read heaps of threads, want some fresh opinions

Setup details- RB3025neo , 260poncams, topmount, GT3076, 44mm tial, E85, 3 1/2inch dump and 100cell cat, current 3 1/2inch catback with jap middle muffler and X force large oval muffler..

Options so far

1) Cut jap middle muffler out and keep rest of system

2) HKS hi power 409 catback

3) cut Jap middle muffler out and replace X force muffler with Magnaflow, then add second Magnaflow if too loud...

So which will sound best , will a HKS catback with restrictors still be a restriction if using E85??

Edited by AngryRB
  • Like 1
Link to comment
https://www.sau.com.au/forums/topic/463757-hks-hi-power-catbacks/
Share on other sites
AngryRB Grand Master

AngryRB

Posted
  • Author
Posted (edited)

overwhelming responses, thanks dudes lol..... went with HKS hi power 409 biches.. will include go pro footage in build thread in couple months for those interested :thumbsup:

Edited by AngryRB
ltjpunk7 Explorer

ltjpunk7

Posted
Posted

So is the only difference between the Hi-Power and the Hi-Power 409 the type of steel?

I'm potentially interested in the Silent Hi-Power as I'm coming from an exhaust that may have given me permanent hearing damage. Looking to improve upon that. ;)

ltjpunk7 Explorer

ltjpunk7

Posted
Posted

I put the Silent on my car a couple of weekends ago. It is loud. Too loud for my liking, but you may like it.

Hmm. Not that YouTube videos mean much, but it seemed relatively mild. I am looking for a quiet exhaust. I want improved performance, but if it sounded completely stock, that would be fine by me. If this is too loud, what system would you recommend? Are any quieter?

ltjpunk7 Explorer

ltjpunk7

Posted
Posted

I've been reading about all the quiet ones, and it seems as though the GReddy Power Extreme II, Kakimoto Regu 06&R, and the HKS Silent Hi-Power are the top of the heap for quiet. But everyone's opinions on the best one are split (usually people just say the one they have is the best).

Seems to me, though, that the the Kaki and GReddy are pretty restrictive. The HKS is 3.75" (95 mm). So it may be the best compromise if silent is the goal but want to be able to build up HP without restricting.

ltjpunk7 Explorer

ltjpunk7

Posted
Posted

No you get one custom made to make power and be streetable

If that's the case, what specifications would you recommend? I'm in the US where about 99% of exhaust shops won't even know what kind of car I'm driving. So some direction would be nice rather than spending $$$ on trial and error. Thanks!

  • 2 weeks later...
AngryRB Grand Master

AngryRB

Posted
  • Author
Posted (edited)

Picked up the HKS hi power 409, i was expecting restrictions but this doesn't have the expected 2.5inch silencers, i had to google about exhaust size measurements and correct me if wrong, you measure OD right??

post-70965-0-62176400-1460016293_thumb.jpgpost-70965-0-57843800-1460016320_thumb.jpgpost-70965-0-58788400-1460016342_thumb.jpgpost-70965-0-83736200-1460016363_thumb.jpg

Seems the smallest part is the bit that will bolt to the cat , which is 3inch , this continues thru the small resonator we'll call it, then its 3.5inch, then at the flange it steps up to 3.85inch which goes thru the cannon then 5inch tip...

So this could be loud, we'll have to see but a thought a JASMA rated catback has to meet a decibel rating?? but with a GT3076, top mounted, and 3.5inch dump, maybe it will be much louder than Jasma hey...

Edited by AngryRB
  • Like 1
AngryRB Grand Master

AngryRB

Posted
  • Author
Posted

Yeah that will be loud.

Did your have the silencer in the rear or middle or does it look similar to this?

I can put a large Xforce muffler in the middle or Magnaflow, so should be ok for a weekender...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • MBS206
      Unpeeling the Orange

      By MBS206 · Posted

      I'm normally copping my own abuse from neglecting my daily drivers. "Those suspension bushes will last a bit more", "Don't worry about the oil leak, just keep topping it up". The project cars I'm always doing things slowly on them as I'm wanting them to be done better, and neater, and nicer. Luckily I don't have to deal with 18 year old Matt's "Learning to wire" stuff in the project cars. And there's only one piece of wiring I'm displeased about in the Landcruiser, and it's about to be cut out... However, the box loads of parts that have been going through this place lately for the Landcruiser... Brake pads Brake Rotors Full handbrake overhaul Wheel Bearings Seals Swivel hubs Steering Boxes Half the suspension joints Shocks Air bags (Ones to go in the rear springs for towing) Water pump Timing kit Lower timing case Harmonic Balancer Radiator Lots of other little seals and shits Gas struts for the bonnet New power window switches And god knows what else I've forgotten... Ha ha ha I have my fingers crossed the pinion seals don't start leaking on the diffs, that the transfer case doesn't leak, and the gearbox input shaft doesn't leak, nor the rear main seal. As they're about the only seals I haven't replaced in the driveline! I'm seriously eyeing off buying new caliper rebuild kits front and rear brake calipers... I'll probably recheck all the valve clearances soon too, and hopefully, it should be all good and sweet to haul some long distance trips again!
    • GTSBoy
      Unpeeling the Orange

      By GTSBoy · Posted

      Every time I pull my 3x gauges out of the console and see the crack-addict way that I did the wiring, and I just can't bring myself to tear it all apart and "make it nice", because it is currently working. In fact, the last time I was in there I probably made it worse.
    • Kinkstaah
      Unpeeling the Orange

      By Kinkstaah · Posted

      The best part is when you own the car long enough that you look back and find your OWN ham fisted amateur shit!
    • MBS206
      Unpeeling the Orange

      By MBS206 · Posted

      The annoying part about neglect, is when you start to replace one thing, and find ten more broken things. Ham fisted monkey repairs you normally only find out about when trying to do something unrelated! Ha ha   Neglect you can kind of anticipate the huge costs to fix it all. Ham fistedness is normally a shock the first time your work on a new old car, as everything "looked" good before.
    • MBS206
      What brakes on R34 GTT(Europe)

      By MBS206 · Posted

      For DBA, check out their guide table here. https://dba.com.au/wp-content/uploads/2023/01/Direct_Replacement-Guide-2021.2.pdf   Additionally they have some other guides and info on how to make sure you choose the right pad.
×
×
  • Create New...