Exhaust/Mufflers
Thread Starter
SC 300HP!!
Joined: Dec 2004
Posts: 3,182
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From: Singapore, North-east
Exhaust/Mufflers
Maybe let me share a small insight with u guys:
HKS exhaust
"poor welding and poor material used in the exhaust" - confirmed by Japan tuners when i was there, talking to them abt exhaust. And here comes the cookie: HKS exhaust DOES NOT improve anything for the 4AT and 5MT, due to the different engine setup from the 6MT rx8.... this is also confirmed by 3 different rotary tuners. I'm sorry to those HKS exhaust owners, but this is what has been said and proven by them. Reason being when they designed and tested the muffler, they only had the 6MT rx8 in mind, without bearing in mind that the 5MT and 4AT engine setup is different...... That is the no.1 problem with a general brand. They juz make for one model, assuming it is suitable for the rest....
Fujitsubo
Again, no gains on 4AT and 5MT due to different engine setups..... But good improvement on the 6MT.
**Therefore pls tink twice before changing ur muffler to any brands... not all will improve horse power..... some will even suffer power loss... the best is to go for exhaust produced by rotary tuners. They noe how to bring out the best for our cars.
No offence or malice intended for those with HKS mufflers. Coffee on me.
HKS exhaust
"poor welding and poor material used in the exhaust" - confirmed by Japan tuners when i was there, talking to them abt exhaust. And here comes the cookie: HKS exhaust DOES NOT improve anything for the 4AT and 5MT, due to the different engine setup from the 6MT rx8.... this is also confirmed by 3 different rotary tuners. I'm sorry to those HKS exhaust owners, but this is what has been said and proven by them. Reason being when they designed and tested the muffler, they only had the 6MT rx8 in mind, without bearing in mind that the 5MT and 4AT engine setup is different...... That is the no.1 problem with a general brand. They juz make for one model, assuming it is suitable for the rest....
Fujitsubo
Again, no gains on 4AT and 5MT due to different engine setups..... But good improvement on the 6MT.
**Therefore pls tink twice before changing ur muffler to any brands... not all will improve horse power..... some will even suffer power loss... the best is to go for exhaust produced by rotary tuners. They noe how to bring out the best for our cars.
No offence or malice intended for those with HKS mufflers. Coffee on me.
Registered User
Joined: Jul 2004
Posts: 458
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From: Singapore
Well done bro. so looks like choices for 4AT and 5MT bros are less. That said, recent HKS material is not so good but gains are goood for certain cars!!!. My fnd fitted an approved HKS on his euroR. Dyno be4 and after showed a peak gain of 15bhp!!
Driving Me Crazy
Joined: Sep 2004
Posts: 1,453
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From: Singapore
Is ok coupe...all available info should be posted, whether positive or not, thanks for the post! Have to say that my Legamax is great...I noticed an immediate improvement in airflow and pickup in my 8 even before the RS. Additionally, the center consol is cooler now than before...I have 6MT tho 
Black Ace
Joined: Oct 2003
Posts: 841
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From: Singapore (EAST)
Yea, im leanin on either. If HKS gets thumbs up from LTA, maybe ill hook one up. Currently still contemplating on Fujit...
I cant stand the rotten egg smell liao - after operation ..... rite Eugene? hehe
I cant stand the rotten egg smell liao - after operation ..... rite Eugene? hehe
Thread Starter
SC 300HP!!
Joined: Dec 2004
Posts: 3,182
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From: Singapore, North-east
Originally Posted by Neon
Yea, im leanin on either. If HKS gets thumbs up from LTA, maybe ill hook one up. Currently still contemplating on Fujit...
I cant stand the rotten egg smell liao - after operation ..... rite Eugene? hehe
I cant stand the rotten egg smell liao - after operation ..... rite Eugene? hehe
Thread Starter
SC 300HP!!
Joined: Dec 2004
Posts: 3,182
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From: Singapore, North-east
Originally Posted by EBS
Well done bro. so looks like choices for 4AT and 5MT bros are less. That said, recent HKS material is not so good but gains are goood for certain cars!!!. My fnd fitted an approved HKS on his euroR. Dyno be4 and after showed a peak gain of 15bhp!!
Registered User
Joined: Jul 2004
Posts: 458
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From: Singapore
Originally Posted by coupe07
wat if Knight Sports', or Autoexe's, or RE Amemiya's muffler has the legal papers? interested???
HI bro, u can get approved ones sure many will be interested.
I up my fnd first, not impt what brand :D :D
Thread Starter
SC 300HP!!
Joined: Dec 2004
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From: Singapore, North-east
Originally Posted by zika76
Just curious but are there any exhaust systems that has been tested to work with the 4AT?
Registered User
Joined: Jun 2005
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Originally Posted by coupe07
re amemiya muffler and autoexe muffler.... both are tried and tested....
Thread Starter
SC 300HP!!
Joined: Dec 2004
Posts: 3,182
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From: Singapore, North-east
Originally Posted by zika76
Thanks for the info! Also what is a ball park figure for either of these mufflers? Doing some budgeting now... haha
with papers, the cost is still ????
RX-8の魅力満載
Joined: Sep 2004
Posts: 395
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From: Planet Earth
Originally Posted by coupe07
without papers, oredi between 1.5k to 1.8k.......
with papers, the cost is still ????
with papers, the cost is still ????
heehee.....
RX-8の魅力満載
Joined: Sep 2004
Posts: 395
Likes: 0
From: Planet Earth
Originally Posted by coupe07
Maybe let me share a small insight with u guys:
HKS exhaust
"poor welding and poor material used in the exhaust" - confirmed by Japan tuners when i was there, talking to them abt exhaust. And here comes the cookie: HKS exhaust DOES NOT improve anything for the 4AT and 5MT, due to the different engine setup from the 6MT rx8.... this is also confirmed by 3 different rotary tuners. I'm sorry to those HKS exhaust owners, but this is what has been said and proven by them. Reason being when they designed and tested the muffler, they only had the 6MT rx8 in mind, without bearing in mind that the 5MT and 4AT engine setup is different...... That is the no.1 problem with a general brand. They juz make for one model, assuming it is suitable for the rest....
Fujitsubo
Again, no gains on 4AT and 5MT due to different engine setups..... But good improvement on the 6MT.
**Therefore pls tink twice before changing ur muffler to any brands... not all will improve horse power..... some will even suffer power loss... the best is to go for exhaust produced by rotary tuners. They noe how to bring out the best for our cars.
No offence or malice intended for those with HKS mufflers. Coffee on me.
HKS exhaust
"poor welding and poor material used in the exhaust" - confirmed by Japan tuners when i was there, talking to them abt exhaust. And here comes the cookie: HKS exhaust DOES NOT improve anything for the 4AT and 5MT, due to the different engine setup from the 6MT rx8.... this is also confirmed by 3 different rotary tuners. I'm sorry to those HKS exhaust owners, but this is what has been said and proven by them. Reason being when they designed and tested the muffler, they only had the 6MT rx8 in mind, without bearing in mind that the 5MT and 4AT engine setup is different...... That is the no.1 problem with a general brand. They juz make for one model, assuming it is suitable for the rest....
Fujitsubo
Again, no gains on 4AT and 5MT due to different engine setups..... But good improvement on the 6MT.
**Therefore pls tink twice before changing ur muffler to any brands... not all will improve horse power..... some will even suffer power loss... the best is to go for exhaust produced by rotary tuners. They noe how to bring out the best for our cars.
No offence or malice intended for those with HKS mufflers. Coffee on me.
But again, really good to see feedback. Well done Coupe07 !
p/s: i was thinking to fix the HKS Legamax by end of the year, be it approved or not.
Thread Starter
SC 300HP!!
Joined: Dec 2004
Posts: 3,182
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From: Singapore, North-east
Originally Posted by watoke
Means to say those with 6MT will have better gains or totally nothing ...
But again, really good to see feedback. Well done Coupe07 !
p/s: i was thinking to fix the HKS Legamax by end of the year, be it approved or not.
But again, really good to see feedback. Well done Coupe07 !
p/s: i was thinking to fix the HKS Legamax by end of the year, be it approved or not.
Registered User
Joined: Jun 2005
Posts: 15
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Originally Posted by watoke
Wow ! Then we quickly install first? then when it is approved we save $$$ :p
heehee.....
heehee.....
Anyway OT again.. I was seeing that a 6 speed auto is going to be implemented for the 2006 RX-8 and would assume that this may impact the 4 speed autos that PI has in stock here.. So was just wondering if I should wait to book and if the PIs would be bringing the 6 speed auto.
