Need Mazdaspeed3 Advice please

[danchiiik]

Hey i just got a 2010 mazda speed 3 and i really dont like the exhaust on it and i also love bov's so i was wondering whats the best for the most reasonable price.
I researched and came to the conclusion of buying a injen cold-air intake, turbosmart compact dual port bov and a greddy racing ti-c catback exhaust.
Please let me know what you guys think of this (anyone)

 

[AutoEuphoria]

- What is your budget?
- What are you looking to gain (power, sound, ?)
- What about the exhaust do you not like?
- What do you "love" about BOVs?

I'm not sure how relevant this info is, because I have an '08 MS3...but here is what I know:

- The stock cat-back section is very free flowing, and you won't get much power out of an aftermarket piece...replacing the downpipe will get you the most power

- The stock BPV can leak, so it's a good thing to replace it. The Forge unit is used by a lot of people in the MS3 community (including myself) and is a good "bang for the buck" piece.

- Whatever intake you get, research it a bit and see what people are finding with their LTFT values. Some poorly designed intakes can mess up your fuel trims by having disturbed air flow through the MAF.

 

[danchiiik]

im looking to get an exhaust, bov and intake all for under 1500.
i wanna gain more sound and performance and the stock exhaust is not bad but id prefer having something much louder and deeper and about the bov's, the louder the more i like it. the turbosmart dualport bov is very loud from what i heard

 

[AutoEuphoria]

Your money would be better placed in a good downpipe than a cat-back...that will get you a good sound increase and get you the most performance. An upgraded cat-back will be $600 for some sound. An upgraded downpipe will be less money, but will get you sound AND performance. Not sure what is available for the 2010 MS3 as far as a downpipe, but if Cobb or CP-E offer one I would look into them seriously. Get a downpipe with a high flow cat over a catless piece because it will help keep some exhaust restriction that will help prevent boost creep in the future.

 

[danchiiik]

theres a cobb downpipe, CPE SS downpipe, GHL drone-free downpipe, and vibrant downpipe.

any feedback on the bov?

 

[AutoEuphoria]

Both Cobb and CP-E make great pieces...you can't go wrong with either unit.

Honestly, I don't have any feedback on that particular BPV. I use a Forge unit because it's had a great round of feedback from the community, works properly, and is a good price. It may not be the "loudest", but any recirculated BPV will be somewhat muffled. Any non-recirculated BPV might have issues because of the design of the motor. The recirculate tube is behind the MAF, meaning that recirculated air from the BPV is unmetered, but ASSUMED to be there. If you take out the recirculated portion (even partially), you are taking away air that the engine assumes is going into the intake stream, which might mess with idle, run too rich, cause jerky shifts, etc. Just something to keep in mind. A loud BPV might sound nice, but the negatives associated with running a BPV vented to atmosphere might outweigh that increase in noise.

*note - I'm assuming this BPV is a hybrid that allows for partial Vent to Atmosphere

Just as a side note, replacing the intake and the turbo inlet will make your BPV louder.

 

[danchiiik]

im gonna look into thoose downpipes and see which would be the best.
its not a bypass valve is a blow-off valve and yes the intake does make the stock bpv louder but id like a bov

 

[Kyrosfactor]

The thing is, MS3's are made to recirculate (bpv), if you want the bpv efficiency with the bov sound, I would go with the Turbosmart dual port. You can go Vent to atmosphere (bov style), recirculate (bpv style), or dual (the sound of the bov with the pros of bpv). A little more expensive but you get to choose! I love mine! And they do have them for the 2010's.

 

[AutoEuphoria]

its not a bypass valve is a blow-off valve

Before you spend a ton of money on something like that, try opening the stock BPV to atmosphere (take the recirculation hose off and plug it with something that can't get sucked into the intake stream) and see if you like how the car performs with a VTA setup. If it's anything like the '09 MS3 I will bet you will change your mind. No sound is worth that kind of loss of drivability. Trust me...I've tried it too. Shifts become choppy because the revs drop off so quickly...shifting into neutral can cause the engine to die...remember, you're taking air away from the engine that the ECM thinks is there, so you're messing with the AFRs anytime the computer things there is air being released through the BPV.

 

[FrequentFlyer]

Take a look at Ultimate Racing's exhausts for the 2010 MS3. They're really nice.

http://www.ultimate-racing.com/Products2/Mazdaspeed3/Mazdaspeed3_Exhaust.shtml

An intake of any kind on this car is probably the best bang for the buck. You may want to think about a short-ram rather than CAI, but that's my personal opinion. Easier to install/remove, easy to maintain, cheaper and there aren't many advantages of providing the turbo with air that's 10-15 degrees cooler because it's going to get heated right back up again. Of course there have been discussions/arguements about this. Do a search.

As far as the BPV goes, I'd stick with the stock one until you've confirmed it is leaking/not holding boost, which honestly, not many people have done before spending money on an aftermarket one. Mine holds boost just fine at 17-18psi. They're cheap to replace too. Yeah, they don't make the cool, "pfftttt" sound, so if that's what you're looking for, get an aftermarket one, but I think your money is better spent elsewhere (like a rear motor mount).

 

[Jchouin1]

Hey i just got a 2010 mazda speed 3 and i really dont like the exhaust on it and i also love bov's so i was wondering whats the best for the most reasonable price.
I researched and came to the conclusion of buying a injen cold-air intake, turbosmart compact dual port bov and a greddy racing ti-c catback exhaust.
Please let me know what you guys think of this (anyone)

i've heard quite a few valves in person, and I reallllly like the sound of the HKS v2, and i'm also sold on the design of a pull-type (boost holds valve closed.) I have the PG type-s, and it works great and is pretty loud, but will probably get an HKS or the PG clone, which I have heard works just as well, but I guess the snap ring to mount it can be a b****. A cai on an intercooled car, imo, only gives you a bigger bill and less flow than a sri. You have a ton of lower cost, quality sri options to choose from. I do like your cbe choice, but would pick up a test pipe before the cbe if you want a bump in power. The test pipe will give you a throatier tone as well on your stock cbe. Or, you can do it all. I would get the HKS v2, HKS cbe, ATP tp, and PG sri, which can happen for 1500.00.

 

[danchiiik]

The thing is, MS3's are made to recirculate (bpv), if you want the bpv efficiency with the bov sound, I would go with the Turbosmart dual port. You can go Vent to atmosphere (bov style), recirculate (bpv style), or dual (the sound of the bov with the pros of bpv). A little more expensive but you get to choose! I love mine! And they do have them for the 2010's.

have you had any problems with the turbosmart bov and what difference did u notice from stock to turbosmart

Before you spend a ton of money on something like that, try opening the stock BPV to atmosphere (take the recirculation hose off and plug it with something that can't get sucked into the intake stream) and see if you like how the car performs with a VTA setup. If it's anything like the '09 MS3 I will bet you will change your mind. No sound is worth that kind of loss of drivability. Trust me...I've tried it too. Shifts become choppy because the revs drop off so quickly...shifting into neutral can cause the engine to die...remember, you're taking air away from the engine that the ECM thinks is there, so you're messing with the AFRs anytime the computer things there is air being released through the BPV.

so your saying putting in a bov would be a bad thing for the car?

Take a look at Ultimate Racing's exhausts for the 2010 MS3. They're really nice.

http://www.ultimate-racing.com/Produ..._Exhaust.shtml

An intake of any kind on this car is probably the best bang for the buck. You may want to think about a short-ram rather than CAI, but that's my personal opinion. Easier to install/remove, easy to maintain, cheaper and there aren't many advantages of providing the turbo with air that's 10-15 degrees cooler because it's going to get heated right back up again. Of course there have been discussions/arguements about this. Do a search.

As far as the BPV goes, I'd stick with the stock one until you've confirmed it is leaking/not holding boost, which honestly, not many people have done before spending money on an aftermarket one. Mine holds boost just fine at 17-18psi. They're cheap to replace too. Yeah, they don't make the cool, "pfftttt" sound, so if that's what you're looking for, get an aftermarket one, but I think your money is better spent elsewhere (like a rear motor mount).

would you recommend getting the 3" highflow cat downpipe with the 3" test pipe for both sound and performance?

i've heard quite a few valves in person, and I reallllly like the sound of the HKS v2, and i'm also sold on the design of a pull-type (boost holds valve closed.) I have the PG type-s, and it works great and is pretty loud, but will probably get an HKS or the PG clone, which I have heard works just as well, but I guess the snap ring to mount it can be a b****. A cai on an intercooled car, imo, only gives you a bigger bill and less flow than a sri. You have a ton of lower cost, quality sri options to choose from. I do like your cbe choice, but would pick up a test pipe before the cbe if you want a bump in power. The test pipe will give you a throatier tone as well on your stock cbe. Or, you can do it all. I would get the HKS v2, HKS cbe, ATP tp, and PG sri, which can happen for 1500.00.

i just looked at some videos, i do like the whisteling of that bov. theres alot of different ones. whats the difference really in the hks sqv3, hks ssvq, and the hks ssq v2.
yea im looking around, most people have a cobb sri. ill have to look more in on that one




BTW GUYS THANKS FOR ALL THE HELP, THIS IS MY FIRST CAR, AND I AM NEW TO THIS FORUM. IT WAS EITHER I GET A MAZDA3 WITH 265HP AND A TURBO ALREADY OR I GET A CIVIC SI WITH 197HP AND NO TURBO.

 

[JamesCH]

Running a BOV instead of a BPV will be bad for the car. It's bad for drivability like AutoEuphoria said, and it also makes the turbo spin down faster, so after a shift it takes longer to build boost back up. I have the Forge BPV and It's remarkably loud, louder than most of the BOVs I've heard.

Edit: IIRC there are two versions of the Forge BPV, and one is louder than the other.

I would get a turbo inlet pipe along with the CAI, both make a BPV louder in my experience, and the TIP smooths out the power you'll get from a CAI. Also, you should be able to get a Mazdaspeed CAI from a Mazda dealer for $260-$270.

 

[Darth Vader]

rear motor mount like Street Unit's, intake, test pipe and Dashhawk, then see what you want to do from there.

 

[Kyrosfactor]

I love my Turbosmart, not a negative thing about it in my opinion, It holds boost longer(Dyno Charts on their website) and sounds great, head turner for sure! And you can feel the "held back in your seat" feeling longer!

 

[8.5MS3]

errr guys its a 2010...... cobb dp dont fit, DH doesnt work

1. get a rear motor mount (cpe)
2. get solid shifter bushings (SU)
3. any intake, ive heard the sris get wet, so a cold air wouldnt be a bad idea (cpe)
4. dont waste your money on a valve. ours need to be in recirc, and the intake will make the stock one nice and loud
5. get a TIP (turbo inlet pipe) (cobb)
6. UR has a sick exhaust. I have heard the testpipe-back option and its awesome, be prepared to spend some dough

 

[danchiiik]

errr guys its a 2010...... cobb dp dont fit, DH doesnt work

1. get a rear motor mount (cpe)
2. get solid shifter bushings (SU)
3. any intake, ive heard the sris get wet, so a cold air wouldnt be a bad idea (cpe)
4. dont waste your money on a valve. ours need to be in recirc, and the intake will make the stock one nice and loud
5. get a TIP (turbo inlet pipe) (cobb)
6. UR has a sick exhaust. I have heard the testpipe-back option and its awesome, be prepared to spend some dough

yea i was thinking of getting a ultimate racing dp with a tp. i really love bov's though, so i gotta find the best one for my situation. the turbosmart are dualport so they can recirc also. i wanted a injen cai but all around i see people getting cobb sri's, whats the pros and cons really? what would the rear motor mount really help me with also?

su has the rear motor mount and shift bushing for 149, is that the ones?

 

[AutoEuphoria]

rear motor mount replaces the (weak) stock piece. This upgrade makes it less likely that you will miss a shift under heavy acceleration. The stock piece is made of fairly weak rubber, which is great for vibration dampening, but can cause the engine to twist or rotate under heavy load. The upgrade stiffens this up, keeping the engine in place. It will, however, increase cabin vibration...just know that ahead of time. Some will be worse than others...just depends on the material the mount is made from.

General note for mounts...the higher the durometer of the material, the stiffer the mount will be, the less the engine will move, and the more the cabin will vibrate.

 

[8.5MS3]

yea i was thinking of getting a ultimate racing dp with a tp. i really love bov's though, so i gotta find the best one for my situation. the turbosmart are dualport so they can recirc also. i wanted a injen cai but all around i see people getting cobb sri's, whats the pros and cons really? what would the rear motor mount really help me with also?

su has the rear motor mount and shift bushing for 149, is that the ones?

what exactly do you "love" about a bov that a bpv cant do?

this car is designed to run in full recirc. you risk backfiring, running pig rich, fouling sparkplugs, and damaging your cats by running a bov.

stock bpv w/a cobb sri

http://youtube.com/watch?gl=US&client=mv-google&hl=en&v=Rmsh_oVujOo

 

[FrequentFlyer]

Your options DP's and exhausts for the 2010 are Ultimate Racing (DP, race pipe and cat-back), Corksport (DP and race pipe), and CP-E (DP and cat-back). Racing Beat is supposedly making a cat-back exhaust for the 2010's also. There may be some more out there that I've missed, but those are the ones I know of.

I would do the Corksport Power Series short ram intake, UR downpipe with high flow cat, UR test pipe and the UR cat-back exhaust. That's at least 40whp gain right there. It's your call on the BPV, but for the best drivability, the stock valve is hard to beat and I promise you, it'll hold more boost than you may think. From what I've heard, the HKS valves sound the best though.