Borla Cat-back Exhaust Info
09-11-2003, 09:14 AM
#27
Int-X 293WHP 242TQ :)
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Saw an ad for the RX-8 Borla exhaust system from Gulf Coast Customs (on Ebay) ($599 + free shipping) and they are claiming a gain of 8 HP and 12 lb/ft. Also looked at the 350Z Borla system and they claimed a gain of 10 HP and 14 lb/ft. ($721)
09-11-2003, 12:38 PM
#28
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Borla Cat-back Dyno Results
Here are the HP gains. As you can see, they're as high as 15 over stock. Max power gain is about 8. We call it a 10hp gain to the wheels.
09-11-2003, 01:19 PM
#33
RX8 ADDICTED!!!
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I have the dyno results, however I just bought a new house and havent unpacked the computer yet. If someone e-mails me I can forward the dynos so they can post them.
In the mean time the results are as follows
Max power:
Dyno run .001: 172.6
Dynorun .004: 180.1
Max Torque:
Dyno run .001: 136.1
Dyno run .004: 137.9
hope this helps.
In the mean time the results are as follows
Max power:
Dyno run .001: 172.6
Dynorun .004: 180.1
Max Torque:
Dyno run .001: 136.1
Dyno run .004: 137.9
hope this helps.
09-11-2003, 01:34 PM
#34
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Mr Borla,
May be I ask for too much, but could you record the muffler sound in some kind of audio file? It would be nice if we can hear how it sounds like, thank you. :D Please.
May be I ask for too much, but could you record the muffler sound in some kind of audio file? It would be nice if we can hear how it sounds like, thank you. :D Please.
09-11-2003, 02:45 PM
#37
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It looks like it is only making performance gains in the upper 1/3 of the RPM range. That's fine by me because it is a first step to getting rid of the limp feeling top end. Hopefully I'll receive mine before I head to Watkins Glen (9/22 and 9/23)for a little track time. 
09-11-2003, 04:12 PM
#39
Ricer is Nicer.....
Seeing is believing....
I have always been a fan of Mr. B's work.....
The system is on its way to sunny northern Canada at this moment.
Can't wait to put the 'tones' back in the exhaust ...and eight horsepower is just more icing on the cake!
.
.
.
doc
The system is on its way to sunny northern Canada at this moment.
Can't wait to put the 'tones' back in the exhaust ...and eight horsepower is just more icing on the cake!
.
.
.
doc
loud?
09-17-2003, 01:04 PM
#44
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The good thing about Borla and Greddy is that they are almost always quiet exhaust mods. Each company tries (to my knowledge) keep their products under the 95dBA limit that some states like California are impossing.
For either company, I feel comfortable buying their exhaust without having to hear it first.
My two cents,
-Mr. Wigggles
For either company, I feel comfortable buying their exhaust without having to hear it first.
My two cents,
-Mr. Wigggles
09-18-2003, 11:04 AM
#45
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No HP gains until after 6k rpms and basically torque loss up until 6k rpms and only a small gain.
Not sure how there can be a lower torque at low RPMs, thats when you need the torque, this may actually make the car feel slower unless you rev to over 6k rpms regularly
Not sure how there can be a lower torque at low RPMs, thats when you need the torque, this may actually make the car feel slower unless you rev to over 6k rpms regularly
09-18-2003, 12:20 PM
#46
Registered User
Originally posted by Blue 350z
No HP gains until after 6k rpms and basically torque loss up until 6k rpms and only a small gain.
Not sure how there can be a lower torque at low RPMs, thats when you need the torque, this may actually make the car feel slower unless you rev to over 6k rpms regularly
No HP gains until after 6k rpms and basically torque loss up until 6k rpms and only a small gain.
Not sure how there can be a lower torque at low RPMs, thats when you need the torque, this may actually make the car feel slower unless you rev to over 6k rpms regularly
BTW, there will be a slight variation from run to run anyway.
-Mr. Wigggles
09-18-2003, 12:46 PM
#47
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Is one test adequate to demonstrate the effectiveness of the exhaust? Torque does look close but I'd still say it's lower at the start.
Horsepower doesn't improve until the high end when the secondary ports open.
Why isn't the improvement proportionate through the entire graph?
Horsepower doesn't improve until the high end when the secondary ports open.
Why isn't the improvement proportionate through the entire graph?
09-18-2003, 12:52 PM
#48
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I'd take an educated guess and say that the stock exhaust provides an adequate amount of air flow for the lower RPMs but once the RPMs and air flow increases the limitations of the stock exhaust become more apparent. If that is the case I would only expect to see gains in the higher RPMs.
09-18-2003, 12:54 PM
#49
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Originally posted by MrWigggles
I see zero torque loss anywhere in the graph. At low RPMs, the lines are on top of each other.
BTW, there will be a slight variation from run to run anyway.
-Mr. Wigggles
I see zero torque loss anywhere in the graph. At low RPMs, the lines are on top of each other.
BTW, there will be a slight variation from run to run anyway.
-Mr. Wigggles
09-18-2003, 01:02 PM
#50
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The torque is slightly unber with the borla up until 3800rpm.
No large amount just slightly. I am waiting for a full exhaust system, but the borla would be nice if the full system is too expensive
No large amount just slightly. I am waiting for a full exhaust system, but the borla would be nice if the full system is too expensive