Gains from COMPLETE straight pipe?
 

Anyone know what kind of gains I should be seeing running a COMPLETE straight pipe exhaust? I'm talking from the turbo back -- no cat, no resonator, no mufflers. This is the system I have in place now. I just did the cat delete on Saturday, and I must say... The difference is completely NIGHT AND DAY. The pickup is ten times better. Boost spools up very quickly! The exhaust sounds INCREDIBLY throaty. No CEL either! By the way, is there any problems I may run into with this setup? I also have a K&N panel filter in the stock airbox.

If you're going answer this thread by telling me to search, don't even bother replying. I have been a ghost user of this forum for a very long time and have been a member of forums like these for years. No one has ever addressed an entirely straight-piped system directly; at least at length for the most part. All constructive feedback is greatly appreciated. Thanks!

*If anyone would like an exhaust video, that can be provided.

:You_Rock_Emoticon:

Gains after the cats on stock turbo will only be volume.

:popcorn:

Your cel will come after a few more key cycles.
If you're lucky, before zzb.

How did you manage a straight pipe? I mean mine has some bends and what not a couple near 90 degree and some 45 degree bends.

This ^^^^

First things first...

POST YOUR FULL MOD LIST ON YOUR PROFILE/SIGNATURE!!! HOW THE FUCK ARE WE SUPPOSE TO READ YOUR MIND AND KNOW ALL YOUR MODS.

You have been searching on here a long time... well that's great.

I bet your car is slow and loud... and if you didn't do your research you are going to go ZZB.

Inb4 panel filter and catless are the only mods.

That's pretty cool that your pickup truck got better after you put a straight pipe on your MS3.

Yup, everybody's going to think you're a dipshit ricer. But that might not be an issue for you.

yep. no mention of HPFP internals...lulz



And OP...there are many people running "straight pipe" set up: catless DP and no other res/mufflers after. Mine is that way (sort of), except i have stock DP with test pipe (so catback). The only gains are in the DP and that has been covered to Death...everything after the DP/TP are strictly for sound on the stock turbo.

So don't come saying there are no threads about this. Brownie.


Also i love how people consider a K&N filter drop-in filter as a mod. I know a guy who says his MSM is "heavily modified" with a K&N drop in (stock airbox), colored Samco hoses, engine dress up kit, ebay fmic core, catback exhaust, and bpv as far as "engine" mods, along with coilovers and wheels. -_______- but i digress...

This.....


Inb4NoInternals

Is this real life?

I've seen a handful of recent threads debunking the CBE is a noisemaker only train of thought, a few have shown modest gains. It won't be on my mod list any time soon (if ever), but I've seen several of our most prominent tuners consider that a myth busted.

None of that matters though until we see the OPs mods and capacity to tune.

I agree with you, there are small gains from a Full 3'' exhaust with K04 (more with BT) but OP has neglected to show his knowledge of tuning and fueling.

OP has been here a loooong time, so he knows. I mean since Feb of this year, that's almost when MSF.org was created.

Go search..................

for most power, run open downpipe. less restriction and lots of weight savings. great success.

Does anyone else think that straight piped 4cyls (even turbo ones) sound like shit?

Imo the drone is unbearable as well.

the op is only 20/21 so alittle loud probably sounds good for him.
you might gain 15 hp for no cats.
get fp internals an ap and a good cai you may pick up 15+ more hp.
at around 400hp a good catback can net you around 15-20hp.

This guy obviously has no idea what he's doing..... I would call dibs on parts when he goes zzb eventually but it doesn't matter.

OP - why are you asking us about the gains? If you've already done this tell us the gains. But please be a little more quantitative than "ten times better".

hasn't been back since first post.
i call troll.

i like mine

Im talking about nothing but pipe. no resos, mufflers. Nothing. The Cpe exhaust has a resonator or something in it right?

nope. i have no resonator in the midpipe, and no muffler. plus 3" testpipe. stock dp though.

how does shit like this happen here? fucking waste of my 10 seconds reading this shit.

My nexus cp-e has a resonator. It might be optional.

When you're pushing the 300s on a k04, a 3" CBE should give you a modest 5-10whp bump. If you're BT then it'll definitely make a bigger impact.

Do not get a CAI. Much better gains can be had from a 3"+ sri

Op still a brownie fag. Can't even reply

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You already stated pick up is 10 times better so why start athread asking if there is ant gains.
Did you take logs to verify it is 10 times better..do you even know what an AP is to take logs.
Since the pick up is 10 times better as you have stated wil you be providing video of your car competing in the NHRA defeating Nitro funny cars

Since OP didnt post back... I assume ZZB... I call dibs on his k&n filter since I'll net mad p0wa y0

LMFAO please... .please provide video LOL

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who needs hpfp when you got "straightpipe"?:smashfreakB:

You should get one of these also.

Mazda MAZDASPEED3 MPS 2010 Tuning ECU Chip Increase HP Torque VP12 Performance V | eBay

Well, it must be said -- I didn't expect to see nearly 700 views on this so quickly, but that's besides the point. I'll gracefully ignore all of the smart remarks that were so... unexpectedly posted.

Anyway, time to provide replies.

No CEL as of yet. It has been three days since I've removed my cat.

I didn't mean that I managed to have the pipe welded in a straight line; that's impossible. I meant that there is no cat, resonator, or mufflers.

Thank you -- I didn't feel the need to have to expound any further as far as that is concerned. You're mostly right -- the straight pipe setup are my only mods, aside from a K&N panel filter but I don't really count that as part of the mod list. Heh, funny that someone could come to this conclusion yet it seemed to be quite hard to determine for some of the more smart-mouthed posters.

I'm sure this doesn't have to be said, but I'll go ahead and waste these extra few seconds of my life to say that it is my car and all that matters is whether or not I like it. By the way, most people break their necks staring whenever I drive by. My MS3 is matte black too -- painted it myself using the kit from DipYourCar.com.

Obviously I'm here to piece information together. Is that not the point of a forum of this kind? Shit man, the time you guys waste talking down on others with your unwelcoming attitudes literally makes me not want to post actively... God FORBID I ever get a piece of information wrong. Anyway, to answer your question, under any type of throttle, the boost is spooling up probably around a second or so after it's applied (the colder weather could also contribute to this). The free-flowing nature of the exhaust allows the car to pull much better throughout all RPM ranges. At higher MPH, the pull doesn't drop off around 80-100 -- it keeps pulling. Feels as if there's an SRI installed. Only thing negative that I'd noticed from removing the cat is that wafting smell of unburnt fuel and gasses occasionally floating into the cabin but that goes without explanation.






Anyway, thanks to those who didn't feel the need to slander me. Highly appreciated. I'll check back on this post later today or tomorrow.

You will get a cel. Stop trying to kid yourself.

now with three times the hate

Damn.... I was wrong.

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They are probably glaring, not staring because your car is stupid loud.


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