Blitz Nur-Spec Rx Vs Hks Silent Hi-Power

[rehab2010]

None of the jap systems will be over track noise limits. You'll be fine.

Racespace or Rob Sabbadin will be able to do a custom system for similar price i would image. Call em.

Imo there is little difference between the two u have mentioned. HKS has a nice note on GTST.

Thanks for the advice all - now I have like 3-4 different avenues to pursue - oh well, its all fun

[rehab2010]

Have you looked inside to confirm?

They often have internal baffles, most of the Jap ones I've seen come through have them. Both my jap ones over the years have.

"3.5" exhaust, but with internal baffles around the 3"-2.75"

Well, I went and got myself a brand new Apexi N1 Pro for an unreal cheap sum of $690 from Ark Design.

Its dimensions are following - 3" flange then its 3.5" piping into the centre muffler - from there it goes to 3.75" all the way into the back muffler which is 3.5"........ Is it gonna be loud - probably. Will I need Apexi ATS - probably, but lets see how loud its first

I also got some Blitz front pipes 2x70mm into an 80mm, and a 3" ceramic cat.

[SiR_RB]

nice front pipes and cat back....but you could of done better than the ceramic 3" cat you got

[Piggaz]

So really it's a 3 inch exhaust.

[ssxRicho]

It's not going to be too loud. Just right. Do you drive it everyday? If so, yes it will be a little loud on the road, but perfect on the track.

lol at this thread, GTR owners are a different breed. It's a stock engine that sees track days...it is not going to see over 300rwkw.

[rehab2010]

I don't drive it everyday - but few times a week - hoping it will sound nice down at PI main straight

This thing will probably never see 300rwkw.

Did look into custom 3.5" - price was $3,500:

So here is the questionaire, what would I make more power with:

A: 3.5" custom exhaust and stock turbos - total mods cost = $3,500.

B: this exhaust setup and a pair of -7's - total mods cost = $3,500.

I'm pretty sure I already know the answer to this. I know, with option B I'd need new fuel pump and some injectors but value for money custom exhaust just was not making any sense.

[Missileman]

Saw your results in the dyno thread, so how does the exhaust sound? am thinking of getting one for my gtst.

[rehab2010]

Saw your results in the dyno thread, so how does the exhaust sound? am thinking of getting one for my gtst.

Its reasonably noisy - not too bad, there is a bit of booming in the cabin but I don't think its too bad. Ground clearance in the middle of the car is really good but looks like its slightly less where the middle muffler is located. Fit and finish seemed 1st class - definitely a value-for-money...and it doesn't seem like it hurt the power output too much either

[AngryRB]

does your muffler have a restrictor inside? is it a hotdog resonator? cause i just fitted a nur spec muffler and its terribly noisy and dronning from idle til about 2500rpm.

[rehab2010]

does your muffler have a restrictor inside? is it a hotdog resonator? cause i just fitted a nur spec muffler and its terribly noisy and dronning from idle til about 2500rpm.

No restrictor inside the back muffler - just a 3.5" pipe.

Centre muffler is not hotdog style - its a fullsized muffler as can be seen on the picture,