Jump to content
SAU Community

Exhaust back pressure - some things to consider

Steve

By Steve,
in Engines & Forced Induction

 Share

Recommended Posts

  • Replies 54
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

lwells Grand Master

lwells

Posted
Posted

What is regarded as the best exhaust at the moment? I am looking for...

* Something made out of titanium (to save weight)

* Something that is legal (or close to it :P )

* Something that will not harm -- or hopefully -- will improve response.

Also, has anyone tried one of the Apexi hi-flow 3" cats?

LW.

Steve Grand Master

Steve

Posted
  • Author
Posted

meggala, good to hear you got such good results from the turbo and glad the thread was of help. Pretty responsive little package you have there - I wonder what the advocates of never using bush bearing turbos would say to your results?

two people that just dont get it then.... your gunna kill your cars...

so it would follow that my car shouldnt be running.

where do you get your info from? heresay, or actual experience? I can understand concern for someone who may damage their car, but dude, give it a rest - your not their mother.

I had no probs at all running on base map in summer. when it made it to the dyno it was rich everywhere.

but anyway, thats a bit off subject

WLD747 Experienced

WLD747

Posted
Posted

thanks steve, hey lwells. the n1 or the duel n1s are the best review and results at the moment. so if your in for something to the specs below i would go the n1. :wassup:

What is regarded as the best exhaust at the moment? I am looking for...

* Something made out of titanium (to save weight)

* Something that is legal (or close to it :P )

* Something that will not harm -- or hopefully -- will improve response.

Also, has anyone tried one of the Apexi hi-flow 3" cats?

LW.

lwells Grand Master

lwells

Posted
Posted
thanks steve, hey lwells.  the n1 or the duel n1s are the best review and results at the moment. so if your in for something to the specs below i would go the n1.  :wassup:

You mean the Apexi N1? What about the Ti HKS's?

Has anyone actual done a comparison of the various titanium exhausts lately?

Edit: I should have added, it has to be turbo-back for R32 GT-R

LW.

Steve Grand Master

Steve

Posted
  • Author
Posted

I have never taken my car down the 1/4, when I drive hard, I like it to last a bit longer than a few seconds. It is a daily driver. Not huge on cruises, prefer to go for drives with smaller groups. Cruises tend to attract too much attention and end up stuck behind guys who may not be too interested in a spirited drive.

BTW DJ, are you going to answer my questions?

B-Man Grand Master

B-Man

Posted
Posted
What about these units?

http://www.fujitsubo.co.jp/search/prod-v.p...cnamID=00000520

Edit: Whoops, wrong link. Fixed now.

LW.

LW - That's the exect same exhaust I have - It seems to go well.

330 rwkw @21 PSI - HKS 3040 - similar setup to steve. Boost starts at 3000 RPM and I have it all at 4100 RPM.

lwells Grand Master

lwells

Posted
Posted
LW - That's the exect same exhaust I have - It seems to go well.

 

330 rwkw @21 PSI - HKS 3040 - similar setup to steve. Boost starts at 3000 RPM and I have it all at 4100 RPM.

Can I ask where you got it and how much you payed? (PM me if you don't want to post)

Cheers,

LW.

lwells Grand Master

lwells

Posted
Posted
LW,

Did you follow the links I posted back here, about the HKS Ti Drag system ?

It works a treat, but it's different from the other HKS Ti systems, many of them only have a Ti ail pipe.

Yup, was rather impressive. Just trying to way it up against other titanium systems.

LW.

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
      RB25DE NEO with Haltech ECU

      By MBS206 · Posted

      You very likely need to get it on a dyno and tune it. My assumption is, you've got an RB25DET tune in it, which has a different manifold, different injectors, and different cams as a minimum. What O2 sensor are you running?   When you say it runs extremely rich from idle all the way to redline, is this just free revving it you see that?
    • 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...
×
×
  • Create New...