Silvia Club of NSW

Deciding between the HKS Hiper and the Trust Power Extreme II. Really have no clue about what to get, though I guess there is that certificate from Trust saying it complies with the sound level. Was also reading through the posts, and the Hiper performed best?

Given the following choices and prices...what would you pick?

1267.60 HKS Fitted
1150.00 Trust Fitted

Quite similar...choices choices choices

peter@advan told me me when i ordered my PE II that it was street legal

isnt hks 4inch?

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sold the sil

I'd go for the HKS

Both are above the legal sound limit.
THe Hyper cracks at about 4000rpm.

Sounds MAD

THey are both great exhausts.
But I picked the HKS HYPER.

are u talking about the JASMA certificate? if so, it means nothing over
here. both systems are over the 90db limit that's for sure.

if noise is not a problem i'd go for the hks hiper. that thing really cracks like a whip when u give it some.

Is that price for just the muffler, cat-back or turbo-back?

cat back

I have the Trust PE II on my S15. Very well made and fairly quiet as well. I say they give the same performance so why not go for the cheaper one and save the money for a CES racing dump&front pipe.

i have Trust PE II on my S14a, very quiet but isn't HKS Hyper stainless steel?? i heard that stainless steel cracks after a while........ i could be wrong.

stainless steel cracks? get ur hands off it!
only the muffler is stainless, the rest is mild steel.

Just had the CES Racing Dump pipe/ Front pipe installed onto my car today. Holy cow, it makes a lot of difference in the responsiveness of the turbo thus engine in the lower rev. The turbo now spools up at about 2K. Its very easy to get boost. The dump pipe certainly expand the powerband of the engine.

When I first have the aftermarket cat back exhaust installed. The engine lost a bit of low end responsiveness. With the dump pipe/front pipe changed, the low end responsiveness is back and better then it ever was.

I will give another week's observation before I post further comment on the performance of the CES Racing dump pipe/front pipe.

This may sound like a stupid question, but are N/A cat back systems louder than their turbo equivalent? By how much?

A turbo is about the best muffler you can get, so turbo systems tend to have less muffling. Also, the more power you're putting out the quieter a turbo's exhaust is, which is opposite to an N/A...

My exhaust is hardly louder than stock at idle, but at high revs it's easily twice as loud as most of the turbos I've heard.

so the result is that most N/A systems need to be more muffled to keep to the same noise levels as a turbo system...

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The Engine Whisperer - fixer of things

did the CES dump/front pipe replace ur stock dump/front pipe?

Yes.