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+1 for the Kakimoto Regu 06&R

I have one of these on mine, because I was looking for a quiet exhaust after having a rediculously loud exhaust on my previous car.

They are an awesome sounding exhaust that still has a deep rumble on idle and at WOT are amazing. I wouldnt have anything else. Had a lot of comments when it's been on the dyno about how good it sounds.

Also dont go with the Trust PE2 (not offence) but these are supposed to be slightly restrictive compared to the Kaki and other exhaust, this is how they are quieter rather than making better mufflers. This information was given by my tuner who had one on a Skyline and gained 10-15 kw's by replacing the mufflers.

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full mega n1's are much louder and sound porn! if you want quiet go for the kaki oval muffler or regu as i have heard they aren't excessively loud. the mega n1 is loud.

full mega n1's are much louder and sound porn! if you want quiet go for the kaki oval muffler or regu as i have heard they aren't excessively loud. the mega n1 is loud.

Even just putting around... say sub 3500 RPM? WOT thats to be expected...

Even just putting around... say sub 3500 RPM? WOT thats to be expected...

when i was just puting around it was still very noticeable that it was loud...but i think it was just loud because i had 3" dump and front the straight 3.5" to the "resonator" (Iif it is a resonator in the mega n1 exhaust) and then the canon.

i guess it would be a tad quieter if u had a cat. i mean just when i turn on the car in my driveway my 32 kinda made things vibrate in the house LoL and the burble was unbelieveable. WOT my 32 full on roared!

but if your gonna be pushing 400kw in ur gtr then i reckon have it loud lol.

full mega n1 on a 400kw 32 rb26....PORN

  • 2 months later...

hey guys...

found this info on these exhausts:

Trust Pe2: ECR33 Skyline RB25 (turbo), Tip: 115mm, Pipe: 80mm, dB: 94 (normal dB:87)

HKS Hipower silent: ECR33 Skyline RB25DET (2-Door) Tip: 120mm, Pipe: 95mm, dB: 98 (normal dB:92)

Kakimoto Regu 06&R: Nissan - Skyline ECR33 - Pipe 80-90mm - Tail 150mm, db: 92db (normal: ??)

any1 got a clip of a PE2 or regu06&R on a skyline?

Edited by shaun123

The stock (branded) japanese exhausts often have the right tip and pipe spec but

the single rear muffler is really restrictive. What is the point of paying for a 3.5" exhaust

that looks the goods when inside the muffler the air-path is more narrow?

of course you can get around that with a loud muffler but then you're over the legal db

limit both on track and street at full bore.

The only good exhaust has two mufflers, and the 3.5" path front to back for sub 400kw

or 4" front to back for over 400kw. And the 3.5" or 4" path must also not get chopped

down where you can't see it, in the mufflers. Without that there are problems making

higher boost or making the expected power at the lower boost leading to all kinds of

expenditures on things that don't solve the main issue: breathing.

If you know of one like that that has a japanese brand name on it, I'd like to hear

about it!!

  • 2 weeks later...
Well it comes down to these cat back systems... both around the same price.. which should i choose???

HKS Hi Power 409 cat back system

OR

Kakimoto 06&R cat back system

The HKS will be louder (POsitive) but its not full stainless steel. (Negative)

The Kakimoto is quieter (Negative) but its full stainless steel. (Positive)

Help... Looking for best performance reali...

Whos running them whats your impressions?

over a year later, i'm asking myself the exact same question.

i love the search button! :P

  • 1 month later...

Someone with the Regu 06R should get the exhaust tested and tell us whats the dB reading is!!!

Justjap just told me they've got the Regu06 in stock for 33GTR and I'm tempted again to downgrade mine for the benefit of a quieter and complying exhaust system (ok maybe not really possible to get it below 90 but 90-91 would be good enough).

Edited by Brandon

there is major differences between the 2 exhaust as mentioned above.

one is mild one is stainless.

one does indeed look pretty but the fact that mild steel keeps heat inside the exhaust ensures a better power result due to higher velocity. i believe both are 3.5" exhaust so at the end of the day...for a BPU skyline your not gonna know the diff. on the other hand if you start getting aftermarket turbocharges with stroker kits. id proberly stick with the hks.

do not mix the hks hi power with the hks silent hi power. completely diff exhaust and sound completely diff aswell. one was built to maximize power and one was built to be legal

Don't discount the Apexi N1 Evolution either if you're looking for a reasonably quiet exhaust! Very nice sounding without any droning and starts to open iup (sound wise that is) over 3K RPM.

The only reason the the N1 evolution is quiet is because it has a built in silencer in the rear cannon which is approx 2.5inch. What is the point of having a 3inch which becomes 3.5 if they have a silencer in them. I have one on my GTR and ended up just cutting out the silencer which made it a lot louder, but also made more power.

there is major differences between the 2 exhaust as mentioned above.

one is mild one is stainless.

one does indeed look pretty but the fact that mild steel keeps heat inside the exhaust ensures a better power result due to higher velocity. i believe both are 3.5" exhaust so at the end of the day...for a BPU skyline your not gonna know the diff. on the other hand if you start getting aftermarket turbocharges with stroker kits. id proberly stick with the hks.

do not mix the hks hi power with the hks silent hi power. completely diff exhaust and sound completely diff aswell. one was built to maximize power and one was built to be legal

Wierd tho, as far as i can tell the only difference between the Hi-Power and the Hi-Power Silent is the fact that the silent is stainless.

The Hi-Power Silent only has a cannon muffler on the rear, and a pathetic excuse for a resonator in the middle :)

Just threw my new 5zigen twin muffler cat back on the other day, and fark me, I reckon it would be quiet as stock! Cause my car is a daily, I couldn't really cope with the straight through exhaust I'd had on there, and now since they have the EPA coming up here and handing out 500 dollar fines, I figured I'd go to the other end of the scale.

So far so good - its incredibly quiet, but I've not noticed any performance drop, and the rear muffler at least is a straight through. It fits up perfectly, and sits a lot higher up than the Fujitsubo one I'd had on there.

  • 7 months later...

after searching this site... i think i have finally decided....

i wanted a kakimoto rego to replace my bee-r exhaust, however thanks to some youtube vids, i never knew how much the hks silent sound so good! HKS it is. i will post a vid from the bee-r to hks once completed.

I have a 4" HKS exhaust on my 32, and its fairly loud, like well over the limit at idle and once you get up higher into the rev range it sounds magic, however its a very expensive exercise from a child support sort of angle, I don't know how many kids i've conceived accidentally giving it the full bananas :cool: in front of an attractive lady :ermm:

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