No Dyno...No Dynero ;)

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)

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.

Torque

thank you

dynos were posted today

Where is it?

Oops, found it, thank you.

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.

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.

Horsepower

Torque

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. :cool:

Do you take Debit Cards?? :)

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!
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doc

How true.

-Mr. Wigggles

I'm sure they take debit cards

loud?
 

Does anyone have experience with this mod.?

How many decibels does it add?

I've asked to hear a borla sound clip but havent heard one yet

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

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

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

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?:(

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.

Your looking at the HP graph, look again.

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