I know there are claims of hp increase/ Does anyone have any info on solid dyno results from the different systems?


I heard some exhaust systems actually lost power. Which ones?

 

full dual catback will make you lose some back presure (n/a aplication only)resulting in lost in low end torque but will make a few poni on top

 

True so that means the Borla and Stillen are the ones. But Borla isn't a true dual since it feeds into one muffler and the Stillen feeds 2 mufflers. HKS true dual as well.


Am I right?

 

no there are two versions of the borla... one that feeds into a single muffler (which is supposed to be independently chambered) and one that feeds into two separate mufflers

afaik there's no evidence that the TD version performs better than the single muffler, but borla made the 2nd one for "purists"

 

from sport z magazine

Here are more #'s in order of ranking:

PEAK HP:
1. Borla 8.2
2. Stillen 8.1
3. Injen 7.6
4. Nismo 6.3
5. 5Zigen -3.4

PEAK Torque:
1. Stillen 7.3
2. Injen 5.1
3. Nismo 4.5
4. Borla 2.7
5. 5Zigen 0.2

Borla (car 2) = 8.2 Hp - 2.7 ft/lbs torque (peak values)
A top end system. Little HP increase until the 5600 rpm to 6500 rpm range. Lost HP & torque below 1800 rpm. 60mm (error actually 58mm). Weighs 52lbs. 1 million mile warranty. Installation - Hard (17 pieces)

Stillen (car 1) = 8.1 Hp - 7.3 ft/lbs torque (peak values)
Hp and torque increase starting at 3000 rpm to redline. Lost a little HP & torque below 1800 rpm. 60mm pipe. 74lbs - 10lbs heavier than the stock system. Lifetime Limited Warranty. Installation - Easy

Injen (car 1) = 7.6 Hp - 5.1 ft/lbs torque (peak values)
Small torque loss at 2800 rpm. Torque gain starts at 3300 rpm. Small Hp increase starts at 3300 rpm, max Hp from 5800 rpm to redline. Major loss in Hp and torque below 2200 rpm. 49lbs.
1 year Warranty. Installation - Easy

 

i dyno'd the magnaflow ss exhaust and it was documented on redline tv.. with an 11whp/12wtq. at the wheels..

 

I wanted to re-itterate:

"exhaust" means after the Y-pipe on most 350Z applications. That is also how they get the weight. Keep in mind that Stillen replaces the Y-pipe too so you really can't say it weighs 10 more lbs. that stock. I am sure the stock Y-pipe is atleast 10 lbs, maybe a little more or less but you get the point. And, from every dyno I have seen, it is the most torque gain by far, and pretty much equal to 1-2 others in HP gain. Looks a bit "plain" or "stock'ish" but quality is always top-notch.

 

EXCELLENT THIS IS WHAT I HAVE BEEN LOOKING FOR!!!!

 

What's the cost on a Magnaflow SS? I know I can get the Borla True dual at a local shop for $815 plus tax of 6%.

 

i'm not sure.. i got it free.. but i think you can get them cheaper than the borla.. i think theyre around the $700 range? i think some of the vendors on this site carry it.. also check magnaflow's website.

 

The Magnaflow web site showns a HP +6.9 and TQ 7.3.

 

$1,069 for Magnaflow. Compared to Borla for $800ish.

 

Wow so this looks like that stillen is pretty much the best among all these, with most torque and second best hp increase and easy installation?

 

most might argue otherwise. in the end, people whom dont buy stillen seem to be able to have enough to buy another mod capable of making up for difference in power. stillen is expensive i think around 1500.00. while others are more than 500 less.

john

 

every exhaust, be it any of the true duals vs a catback + y pipe will gain within a couple hp of one another, so all depends on what you like the looks/spund of and what you can afford

adam

 

YES! exactly right. its hard to give your opinion on this board, and make decisions based on them, solely because everyone interputs their feelings and their opinions differently. although one person might like a loud exhaust, they might also like a very stock looking exhaust visa versa.

john

 

$1150.00 for the Stillen.

http://performancenissanparts.com/ca...roducts_id=277
http://www.stillen.com/Sportscars_de...d=35098&page=1

 

hey while your looking up prices, can u find the cost of injens and borlas exhaust?

after that compare HP, TQ, Weight and Cost of all three. which is worth the price now?

john

 

I found the Borla TD for $780ish shipped!!

Hmmmm... time to give out the credit card number?

 

I just did a dyno run and max power was 264 with the Injen exhaust. I dont know the stock #s