My New STF project...

Andres,

With the primary cat gone in your header install, how did you deal with the O2 sensors? I would think that you'd need to move the secondary sensor aft of the second (now the only) cat to avoid CEL's, right? Or did you come up with a different solution?
 
Andres,

With the primary cat gone in your header install, how did you deal with the O2 sensors? I would think that you'd need to move the secondary sensor aft of the second (now the only) cat to avoid CEL's, right? Or did you come up with a different solution?

You're right , after the hardware provided with the header (extensions and bongs), just did that friday evening and have not had a CE light since friday , I am waiting to have no issues to post it. Autocrossed yesterday, no problems, will drive around today and see.

Very happy about the light to go off finally ! If the issue doesn't come back I will see how many people are interested .

Car is amazing even with the cheaper suspension. Paxed first yesterday again yesterday against National level autocrossers.

Andres
 
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You're right , after the hardware provided with the header (extensions and bongs), just did that friday evening and have not had a CE light since friday , I am waiting to have no issues to post it. Autocrossed yesterday, no problems, will drive around today and see.

Very happy about the light to go off finally ! If the issue doesn't come back I will see how many people are interested .

Car is amazing even with the cheaper suspension. Paxed first yesterday again yesterday against National level autocrossers.

Andres

That's great to hear Andres. Hopefully that light never, ever comes back on again! :)
 
Pictures of my header...

Finally since I know is working ok I feel I can show pictures now: Enjoy

Out of the box with all the hardware:
6930647940_3200ce60ab_o.jpg


Flange, good quality welds:
6930648248_4e11707218_o.jpg


O2 sensors and EGR locations:
6930648562_306d456440_o.jpg


Wrapped ready to go:
7086046627_aca42248cb_o.jpg


Andres
 
it doesnt roar\resinate in the cabin to annoying levels at 3k rpm (highway speed)? If not throw me the model # ;-)
 
This sounds good, it seems fairly loud, but it is what you would expect from a header and straight exhaust to the muffler, by the way this muffler definitely sounds nicer when compared to previous one. Looks good too!
 
Dyno day , Great results !!

First of all I have to thank Rodrigo (Font Motorsports) for helping me with this. Since I changed Dyno (to a Mustang dyno from Dynojet) last time, that disqualified my previous data on the Dynojet. I had to start with a fairly stock Mazda 2 (Rodrigo's) vs mine fully prepped no tuning yet.


1-Rodrigo's car had my intake already in for two weeks nothing else. He got very good numbers:

106 HP and 101 Lbs. of Torque

2 My car with my second gen intake and Magnaflow Muffler replaced from previous time.

114 HP and 112 Lbs. of Torque

Charts:

My numbers:
7275057532_26fc5d99f9_o.jpg


My last Vs. previous 114 HP and 112 Lbs. of Torque vs. 112 HP HP and 106 Lbs. of Torque
7275058010_1f399db9ca_o.jpg


My last vs. Rodrigo's:
7275057084_17460d3461_o.jpg


Conclusion:

An approximate gain 8 HP and 11 Lbs. of Torque from headers and full custom exhaust, I say approximate because we used two different cars.

Andres
 
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This sounds good, it seems fairly loud, but it is what you would expect from a header and straight exhaust to the muffler, by the way this muffler definitely sounds nicer when compared to previous one. Looks good too!

This is with the new muffler:


Much better

Andres
 
Andres, above you mentioned your second-gen intake. Are you developing an intake you plan to sell or dish details on?
 
You're right I am working on something that doesn't look so "Home made" according to Rodrigo. Hey 6-7 HP isn't bad from a Home made looking intake ;)

Andres
 
Update..

Engine mount
Short shifter
Ram air
Upgrade springs for the KSports
Flat black 949 Racing 15x7.5 UL Wheels and...

59264_10152747596900377_1276554411_n.jpg


Andres
 
YES! My 15x7.5 6ul - 205/50 ZII setup is on order! Cant wait to put them to the test. Do you have a autox event coming up soon?
 

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