Jump to content
SAU Community

HKS Super Drager or A'PEXi N1?

Greg

By Greg,
in General Automotive Discussion

 Share

Recommended Posts

Greg Veteran

Greg

Posted
Posted

Ok this is the deal:

I can save around $200 by getting the N1, but it comes with 60mm piping as opposed to the 65mm piping of the super drager (remember I'm NA).

Also I'm not sure if I'll be happy with the look and sound of the N1. I have heard good things about the sound of the HKS.

Link to comment
https://www.sau.com.au/forums/topic/4434-hks-super-drager-or-apexi-n1/
Share on other sites
Adz Experienced

Adz

Posted
Posted

Be careful,

NA engines need backpresure. The biger the exhaust the less backpresure but the higher the flow. Backpresure does not aply to turbo motors due to the fact that althoug backpresure is lost it is no comparison the the amout of power gained due to the increase in overall flow of exhaust gasses alowing the turbo to operate much eayser.

On an NA car the loss of backpresure is much more evident. I had a 2 1/2" exhaust on my 2ltr SSS pulsar (go the SR20DE :) ) *duck*, the take off was crap I would come close to stalling every take off unless I was launching. The revs up top were awsome though. the benifits of this exhaust did not come into effect untill I got to about 5 grand and above. Not to practical for street use. I was told that the optimal size for thiss motor was 2 1/8", 2 1/4" max other wise as I had witnessed the los in backpresure wound makt the motor impractible. The result was fitting the stock exhaust back on and I can tell u thats when the fun started. Much more zippyer. Unless I highly modified the motor (cams, increase compresion, chip, etc) I wold not gain any real benifit from the 2 1/2" exhaust.

This does not mean you cant put a better exhaust on you NA car. Just be careful not to go to big at this stage. I recomend that you speek to a couple exhaust joints. Mufler Man in parhan know their stuff. The problem with the apexi exhausts and HKS exhausts is that they are designed for turbo cars where loss of backpresure is not too important.

Happy hunting,

Adam

DAMQIK GTS-T Community Regular

DAMQIK GTS-T

Posted
Posted
Originally posted by Greg

i won't get that popping sound because i'm NA, right?

yes you would get the popping, even if ya fitted any bigger zorst.

I used to years ago have a gemini after fitting a bigger zorst it suddenly got the pop's mostly happens when backing off while staying in gear.

DAMQIK

KamikazeR33 Grand Master

KamikazeR33

Posted
Posted

i had a standard exhaust on my VB 3.3L commonwhore with extractors and it was like the extractors werent there

when i put on a 2 1/2" zaust the power was more easily avail instead on it trying to breathe out a straw

i dont notice any loss in low down revs or speed ands its got da old tri-matic gearbox :)

maybe it only does it for smaller engines :shake:

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

    • Haggerty
      RB25DE NEO with Haltech ECU

      By Haggerty · Posted

      I seem to the be only person that is using a Haltech 2500 on an NA motor, I've installed a Bosch DBW throttle body to the OEM intake manifold and am having problems maintaining AFR even with the wideband o2.  It will run extremely rich at idle and up to redline, but under load it will go extremely lean in the 20s and i'm essentially having to rev it over 4k and feather the clutch to get it up to speed.  I've read a few other threads of about the butterfly, it seems removing the vacuum to it is supposed to have it remain open, i've noticed no difference under 4k with the vacuum line to it plugged.  I'm hoping someone here has had luck using the NA manifold with Haltech, and if they happen to have a tune for it.  
    • sonicii
      Could it really happen......

      By sonicii · Posted

      I don't know any details, but I really wouldn't be surprised if they do it as a LHD only version, at least initially.
    • Gareth87
      What should I do next to hold the head on

      By Gareth87 · Posted

      Thanks for the replies everyone. Definitely a coolant push. Oil catch can is empty and always has been. As the engine is out now I'll be having a good look over things. I do have some detonation on the piston tops from a trigger issue back about 5 years ago. I felt it and shut off then bought a new ecu and changed the trigger. Never been an issue since. It never hurt the power, its made almost 80hp more since that incident but I will pull the bearing caps to take a look. If the bearings are damaged I will do a bottom end refresh. Head is being re conditioned at the moment and the block will be cleaned and checked to ensure it's flat. I'll go with a kameari gasket and see how it ends up. The other thing I'm not super keen on is the cylinder colours. I suspect this is from the inlet manifold. The plan will be to put it back together, retune and then stick a plazmaman billet inlet on it and retune. I'm happy with the power, if it makes a little more, then great, but I would rather just make everything more efficient at this stage.
    • MBS206
      Could it really happen......

      By MBS206 · Posted

      Maybe they'll look to do a bunch of presales to help inject some cash fast for their financial issues...
    • MBS206
      R34 25GT Engine Light 21

      By MBS206 · Posted

      Does it also misfire equally when revving?   Josh is very correct in what you should do. The coilpack harness wiring loom itself is a known problem due to its age and the number of heat cycles it has gone through. Throwing parts at a vehicle to diagnose the issue isn't a smart or good way to do it. Secondly, you may have a bad coil pack, you pop replacements in, they fix that issue, but messing with the harness breaks it, so the issue persists. So now you think "well it wasn't the coil packs" and have to continue chasing your tail, potentially swapping back in your shit coil packs and returning the good ones (yes, I've seen people do this because 'it wasn't the problem' and they want to save money). And suddenly, you've got two issues with the same symptoms...   Diagnose, don't use the spare parts shotgun.
×
×
  • Create New...