Vibrant Exhaust gain 10 HP?????

[shu5892001]

I was browsing on M3F to find some justification for purchasing my Vibrant CBE, and came across to these two dyno graphs which showed a gain of 10hp, which seemed ridiculous for just an CBE... I thought CBE will gain around 1-3hp lol. Can anyone confirm on these numbers?
STOCK: http://www.vibrantperformance.com/news/img/mazda3_axle/dyno1small.pdf
VIBRANT CBE: http://www.vibrantperformance.com/news/img/mazda3_axle/dyno2small.pdf

Thanks

[Zoom Zoom Boy]

I can't confirm or deny it, but I call total B.S. on a 10HP gain with a CBE on a NA MZ3 without additional mods and totally otherwise stock.

Sounds like graduates of the following at work:
http://www.thedreamoutpost.com/workfiles/Rice_University_seal.png

[shu5892001]

lol i read some where that a cbe adds 1-3hp

[jonjon72]

wha???? then the Borla should push out an extra 25hp!!? dammit! lol

I agree with Zoom Zoom......bs on 10hp from a CBE on a Mazda3

[bubba1983]

oh but its true
my car was dyno'd with vibrant, and it yeilded those numbers also....i can't find my sheet, as it was years ago, but i know its out there somewhere

[shu5892001]

wha???? then the Borla should push out an extra 25hp!!? dammit! lol

I agree with Zoom Zoom......bs on 10hp from a CBE on a Mazda3

isn't the vibrant suppose to be pushing more hp than borla anyways? since it's got a high flow cat, unless ur running borla+race pipe

[Zoom Zoom Boy]

oh but its true
my car was dyno'd with vibrant, and it yeilded those numbers also....i can't find my sheet, as it was years ago, but i know its out there somewhere

Bubba's been into the 'special' Bud again...LOL.

http://www.beerrunners.co.uk/images/budweiser-beer-made-with-genet.jpeg

Did you have any other mods Adam, or just the CBE? Was the baseline and post install dyno done on the same day or at least with comparable temps, same humidity etc? Same dyno machine and tuner?

[bubba1983]

at the time i had the cbe installed...so no baseline was done...but comparing to all the other baseline dyno's out there, what they say is true....
i had a dyno done all in one day, with the cbe/oem exhaust manifold and then with the cbe/vibrant prototype exhaust manifold

[shu5892001]

got my vibrant last night from nextmod, hopefully it can at least give me some gain... lol

[Donutz]

Do before and after dyno runs and you (we) will know for sure.

[Shizuka_Osamu]

IMO, 5-10hp gain sounds right... but no more then that. 1-3hp is too low for a cbe.

[Soyabean]

IMO, 5-10hp gain sounds right... but no more then that. 1-3hp is too low for a cbe.

You'd be surprised with the gains. Its not as much as you think. I have a cai and borla cbe and i'm afraid to dyno cuz i dont wany to cry at the results.

[Donutz]

^^ What are you expecting for numbers? I put down (what I'd consider) pretty good numbers for this car on a mustang with I/H/E and rear MM.

[Soyabean]

^^ What are you expecting for numbers? I put down (what I'd consider) pretty good numbers for this car with on a mustang with I/H/E and rear MM.

I have a cai, cbe, and rear mm. But i seem to lose to my friend's ralliart. They are stock 162/162 and we have 156/150. Our cars are lighter too. Maybe its the way I shift. What rpm would you recommend I release the clutch at and what rpm to shift when dragging on the track? I noticed that I'm more effective when i pop the clutch at 3k from the start. I have to wait til we go back to the track to retest how much I improved on my launches. I also shift at 6k which may or may not be the optimum point to shift at so im not sure about that.

[shu5892001]

I have a cai, cbe, and rear mm. But i seem to lose to my friend's ralliart. They are stock 162/162 and we have 156/150. Our cars are lighter too. Maybe its the way I shift. What rpm would you recommend I release the clutch at and what rpm to shift when dragging on the track? I noticed that I'm more effective when i pop the clutch at 3k from the start. I have to wait til we go back to the track to retest how much I improved on my launches. I also shift at 6k which may or may not be the optimum point to shift at so im not sure about that.

So you lose to your friend's stock ralliart with cai and cbe?

[Soyabean]

So you lose to your friend's stock ralliart with cai and cbe?

He actually has a injen sri and magnaflow cbe. But he said that he didnt feel much gain in his car. Reason being is some engines have more potential to unleash more hp than some with performance mods. So im thinking that maybe he didn't get much gain and while I got 9whp (if i recall correctly on the fujita cai) with my Mazdaspeed accessory cai, I should be able to at least keep up with him

[azn_outlaw]

Well maybe in between a 5hp gain sounds about right...

But despite that, it should be more then 1-2...

besides the point you should be all smiles and a nice pat on the back, its great proof that the affordable price for this complete CBE

shows it is functional, sounds great and actually gives you an actual gain....

as well its not known to be as s loud exhuast like the Greddy or HKS systems

If you got the money sure Borla is great but seems like another win win situation for an exhaust that wont rip your arm off

To me a muffler system is a muffler system as so long as it performs and within budget means.....

Now as a bonus, add a straight pipe aka secondary cat delete for a little extra power but still run clean within emissions....

[active3s]

Eh..ok..I guess Im the only odd one...that is pretty close...and depending on air temp...But if thats the only thing added and no CAI....yes..the only thing you going to notice is a bit more LOOK AT ME sound and loss of torque. Onc you get a CAI dpepending on wich ..will make the huge diference...In better words...you open your butthole bigger but your mouth is not big enough to eat as fast as what you dump out.....For the Borla or HKS is more if you running turbo..not NA

[Kappa]

Eh..ok..I guess Im the only odd one...that is pretty close...and depending on air temp...But if thats the only thing added and no CAI....yes..the only thing you going to notice is a bit more LOOK AT ME sound and loss of torque. Onc you get a CAI dpepending on wich ..will make the huge diference...In better words...you open your butthole bigger but your mouth is not big enough to eat as fast as what you dump out.....For the Borla or HKS is more if you running turbo..not NA

lol... that was understandable but wow... haha you should be a teacher.. maybe only high school though lol

[active3s]

lol..thank you....

[shu5892001]

I am currently only running a CAi.. so i guess I eat faster than i can shit

[active3s]

I am currently only running a CAi.. so i guess I eat faster than i can shit

LMAO..yes in short words..I think this is where you gain more torque but not much in HP....Anyone else can elaborate on this?

[michaelm]

after installing my vibrant exhaust i did'nt really notice much gains... but i did notice a considerable noise gain :D!

[active3s]

another thing...when adding a CAI or CBE..you have to remember..your bandwith will be adjusted on your CEU...Your peak HP/TQ will not be the same....and depending on what gear...2nd was always weak...Another thing ..you can notice how quick your RPM climbs...all the way to red with out hesitating now....I play with 4.5 to 5 when doing autox...use a lot of torque instead of high rev for HP..helps controlling car to...Shifting I use the same range....

[shu5892001]

so did all you guys reset ecu after installing CBE?

[active3s]

yes....otherwise CEL will show..

[em3]

after installing my vibrant exhaust i did'nt really notice much gains... but i did notice a considerable noise gain :D!

+1

[Uni-Body]

On my VR6 (3.2L 24 valve) I gained 7.4 WHP, and the only other engine mod I had at the time was an AEM cold air. That's with a 3 inch Magnaflow cat back, stock cat & downpipe as well. Oddly enough though my computer is showing an increase in mileage... on average 4-6 MPG, which was great because my VR6 is a major gas guzzler! (probably due to the increased back flow)

It doesn't necessarily compare with a 3 because of the difference in engine size and throughput, but you should still gain a minimal amount of HP. Don't expect huge gains like 10-25 HP though :)

And regarding resetting the ECU after a cat back install - some mechanics I've talked with say there's no benefit to it because the sensors are pre cat, so anything after the cat won't be factored into the ECU computer. I disagree though, as I felt a noticeable difference after resetting the ECU. It doesn't hurt... so why not?

[Kappa]

i didnt get a CEL when i put on my exhaust and didnt do a reset should i?

[sp3GT]

i didnt get a CEL when i put on my exhaust and didnt do a reset should i?

It's not necessary but I remember when I first had Magnaflow CBE on and didn't reset ECU. The rpm's at idle would fluctuate, I think it's fine to not reset.

[Zoom Zoom Boy]

i didnt get a CEL when i put on my exhaust and didnt do a reset should i?

No need unless you throw a CEL. Your ECU will learn it quickly enough. No harm either way...

[JohnyGT]

Hard to believe just a cbe itself on stock car makes 10 ponies...