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- 2012 Touring MT
You are welcome . got my header back full custom exhaust, immediate improvement , will wait a few days to dyno it.
Andres
My New STF project...
- Thread starter Andres3165
- Start date
You are welcome . got my header back full custom exhaust, immediate improvement , will wait a few days to dyno it.
Andres
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- 2012 Touring MT
Header update, the car is getting stronger and stronger after the full exhaust was installed, even though after 36 hrs. we tested with Rodrigo's (Font Motorsports) Mazda 2 which is completely stock engine wise besides nice 17" wheels (wheels did not help him). Significant difference, probably he will describe it later. We did a rolling pull in third gear and one in fourth. In third buy the time I get to 5000 RPMs I have a car length ahead. My car starts pulling around 3000 increasing fast and around 5000 there is a second kick strong to 6200 rpms
Talked to the Headers' manufacturer about the initial results with the stock headerback, they claimed 5-6 HP gain , I barely got 3 HP gain, an no torque Gain. The reason is this: they don't have a second Catalytic Converter, and also they have a 2" pipe all the way from the header to the muffler. Our pipe I think is 1 and 3/4 " .
I will wait one more day, probably take advantage of the cooler temperatures this weekend to dyno the car again.
For my taste is kind of loud because of the muffler, I might change that soon. Got some sound clips with my cheap phone:
At work in a cover garage:
Running with windows down: My phone is on the dash board by the radio.
Thanks
Andres
Talked to the Headers' manufacturer about the initial results with the stock headerback, they claimed 5-6 HP gain , I barely got 3 HP gain, an no torque Gain. The reason is this: they don't have a second Catalytic Converter, and also they have a 2" pipe all the way from the header to the muffler. Our pipe I think is 1 and 3/4 " .
I will wait one more day, probably take advantage of the cooler temperatures this weekend to dyno the car again.
For my taste is kind of loud because of the muffler, I might change that soon. Got some sound clips with my cheap phone:
At work in a cover garage:
Running with windows down: My phone is on the dash board by the radio.
Thanks
Andres
Andy Hollis
Member
- :
- 2012 Mazda 2 Sport
What muffler are you using? I am a big fan of the Burns products. Use them on my Hondas. Quiet, repackable, light, strong, and make power versus most others.
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- 2012 Touring MT
This one was a the shop sitting like a take off but is too loud he even gave me a muffle to reduce the noise, but I can feel the power change with the muffle, plus the quality of the audio is not good. The Power increase after the exhaust was noticeable like you said , the headers needed the exhaust.
I'll look into the Burns one
Thanks
Andres
I'll look into the Burns one
Thanks
Andres
Greensleeper
Member
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- 2 GX 2011
Andy Hollis
Member
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- 2012 Mazda 2 Sport
This testing article may be interesting to some. I ran that 22" Burns muffler on the street and it was quiet enough to drive through National Parks and not disturb folks. Yet it made the most power. Win-win.
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- 2012 Touring MT
Font Motorsports
Member
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- 2012 Mazda 2
haha, i kinda meant header(s) in general.
Font Motorsports
Member
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- 2012 Mazda 2
I was there and I will describe it..... now!
I had the pleasure of meeting Mr. Andres3165 and let me tell you something... this guy is a complete maniac... of speed!! (rockon)
Andres did a great job of setting up his Mazda2. I was impressed by the performance. With the combo of a header, intake, exhaust & muffler I could definitely feel a difference in power and torque. I got instantly jealous.
Andres some how let me, a perfect stranger drive his car!... Although i didn't gun it i could feel the difference when i accelerated. I felt it immediately in fact. 1st, 2nd and 3rd felt stronger. I could feel more torque. I absolutely felt it when i got in the passenger seat with Andres driving. Like i said, i was impressed. Andres took me to some back roads and just flat out gunned it and I felt the G's. I also got to experience some serious cornering ability on a fast corner. It felt like a little beast and it definitely sounded like it too.
The exhaust sound and feel when i started the car up was so good. Felt strong. I do have to agree with Andres that it's a bit too loud. As far as the performance goes it seems to make a difference. Definitely when paired up with the headers... ummmm, header. (whistle)
Keep in mind that my Font Motorsports Mazda2 is stock and my 17" wheels did in fact, not help. We have completely different Mazda2's. Which is a great thing in itself. Both hot in different ways.
We ended up deciding to get on the expressway and do a rolling start on 3rd and 4th. On 3rd Andres pulled away pretty quickly, a whole car length ahead. On 4th it was a little closer if i remember correctly but he still pulled ahead. And trust me, my foot was all the way down.
Final verdict? Andres has a faster than stock Mazda2 on his hands.
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Greensleeper
Member
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- 2 GX 2011
Nice write up Font!
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- 2012 Touring MT
Project update..
After testing the car against Rodrigo's I took the car to the Dyno, numbers did not make any sense, the car felt way stronger than the previous dyno day (I have been doing this for a while) so I decided to drive Up north to the Dyno that I have used before when I did my Spyder's build. This is a Mustang Dyno which some reviews say that their numbers are low. Well I have trusted the guy for two years is just a long drive.
Numbers came up more realistic and strong, they make more sense, they show a gain I'm assuming hopefully10 - 12HP with the Header/Exhaust combo. The issue now is that it would be hard to back track to the stock numbers in a different Dyno.
The good news is that Rodrigo (Font) is going to test his car which is fully stock engine wise at this same Dyno, and probably we'll have a new base line to figure out the improvement performance with the mods.
Is a pain but in the name of science and my own peace.
The owner of the Dyno said that as soon somebody gets a reflash 120 HP could be a reality
Andres
After testing the car against Rodrigo's I took the car to the Dyno, numbers did not make any sense, the car felt way stronger than the previous dyno day (I have been doing this for a while) so I decided to drive Up north to the Dyno that I have used before when I did my Spyder's build. This is a Mustang Dyno which some reviews say that their numbers are low. Well I have trusted the guy for two years is just a long drive.
Numbers came up more realistic and strong, they make more sense, they show a gain I'm assuming hopefully10 - 12HP with the Header/Exhaust combo. The issue now is that it would be hard to back track to the stock numbers in a different Dyno.
The good news is that Rodrigo (Font) is going to test his car which is fully stock engine wise at this same Dyno, and probably we'll have a new base line to figure out the improvement performance with the mods.
Is a pain but in the name of science and my own peace.
The owner of the Dyno said that as soon somebody gets a reflash 120 HP could be a reality
Andres
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Font Motorsports
Member
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- 2012 Mazda 2
When you said that with your first dyno that you only got 3 extra hp i was like "no way Jose!". 10-12hp sounds much more like what i experienced. Definitely glad to hear that.
Yes, i will sacrifice my 2 at the Dyno for the sake of science and POWER!
Glad to do it. I've never done a dyno test so this will be cool.I think that's a number that's definitely attainable. Let's hope Hypertech can come through.
Congrats, you are now comparing apples to catfish. You cannot compare numbers from your baseline to numbers with mods from different dyno's. It is not that important to look at the overall numeric change, but to also look at the curve. If you look at the curve and the peak number is 4hp more at X rpm, but you lost 6hp at Y rpm would you still count that as a net gain of 4hp? Sounds more like a net loss of 2hp.
The most important thing when building a car is not the peak HP, but the delivery of that HP and TQ. I would rather gain 5 hp at 4,000 than 6 hp at 7,000. Especially with the way this car is geared, you typically will not see the top of second gear on a National style course.
That being said, I have not autocrossed this car yet, so take it with a grain of salt.
Font Motorsports
Member
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- 2012 Mazda 2
Well, we are going to test on the same dyno. Stock vs. modified. Simple test to judge over all gains.
Racebrewer
Member
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- Mazda, Mazda 2 Touring MT
You still might have a variation between cars of like 5%. Some are just better than others.
Years ago our local VW dealer had a stock, off-the-truck, Rabbit that had waaaay more power than any other Rabbit in the dealership (and there were a lot of them). I got to drive it once. Just astounding. Every salesman and mechanic in the shop drove the wheels off that sucker.
They checked everything they could, short of tearing the motor apart, and couldn't figure it out.
John
Years ago our local VW dealer had a stock, off-the-truck, Rabbit that had waaaay more power than any other Rabbit in the dealership (and there were a lot of them). I got to drive it once. Just astounding. Every salesman and mechanic in the shop drove the wheels off that sucker.
They checked everything they could, short of tearing the motor apart, and couldn't figure it out.
John
Font Motorsports
Member
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- 2012 Mazda 2
That is definitely an interesting point.
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- 2012 Touring MT
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At a maha dyno the figures we have are these:
Stock euro-spec : 107hp
Induction kit - half exhaust : 113hp
Induction kit - full exhaust : 116hp
Induction kit - full exhaust - ecu : 126hp aprox.(I did the ecu tuning on a different dyno and had 10hp and 1,5kgr torque gain)
Stock rev limit at 6500(real,not on the tacho) and after ecu tuning 7000rpm.Ecu tuning makes a big difference but you have to install good induction-exhaust to make it work properly.
Stock euro-spec : 107hp
Induction kit - half exhaust : 113hp
Induction kit - full exhaust : 116hp
Induction kit - full exhaust - ecu : 126hp aprox.(I did the ecu tuning on a different dyno and had 10hp and 1,5kgr torque gain)
Stock rev limit at 6500(real,not on the tacho) and after ecu tuning 7000rpm.Ecu tuning makes a big difference but you have to install good induction-exhaust to make it work properly.
I am planning on running STF in Iowa and there will be very few races that the temps will be anywhere neat 70F. Reading through this and other forums, it sounds like the R1R is a great tire as long as it is not hot. What is the best tire when the temps are in the 80s and 90s? I am brand new to the sport and ran my first event this Sunday. My 2 was competitive running stock steelies and tires and I had a lot of fun driving it.
